ПРИМЕНЕНИЕ СУСПЕНЗИЙ CSH В ЦЕМЕНТИРОВАНИИ СКВАЖИН

Изобретение относится к применению композиции ускорителя схватывания для неорганических связующих веществ, которая содержит по меньшей мере один водорастворимый гребенчатый полимер, включает структурные единицы (мет)акриловой кислоты, малеиновой кислоты, полиалкиленгликольвиниловых эфиров, полиалкиленгликольаллиловых эфиров и полиалкиленгликолевых эфиров (мет)акриловой кислоты и частицы гидрата силиката кальция при цементировании буровых нефтяных и газовых скважин в областях вечной мерзлоты и в шельфовой зоне, причем гребенчатый полимер представляет собой сополимер, который на основной цепи имеет боковые цепи, включающие полиэфирные функциональные группы, а также кислотные функциональные группы, а частицы гидрата силиката кальция являются менее чем 5 мкм, преимущественно менее чем 1 мкм, более предпочтительно менее чем 500 нм, особенно предпочтительно менее чем 200 нм и в особенности менее чем 100 нм. Изобретение развито в зависимых пунктах формулы изобретения. 12 з.п. ф-лы, 1 ил., 1 табл ...

ДОБАВКА ДЛЯ МАСС, КОТОРЫЕ СХВАТЫВАЮТСЯ ГИДРАВЛИЧЕСКИ

Изобретение относится к добавке, которая может быть применена в качестве ускорителя твердения для гидравлически схватывающихся композиций, включающая: a) по меньшей мере, один полимерный диспергатор, включающий структурные единицы, имеющие анионные или анионогенные группы, и структурные единицы, имеющие боковые цепи простого полиэфира, b) по меньшей мере, одно соединение сульфоновой кислоты формулы (I)в которой Aозначает NH, NHMe, NMe, N(CH-CH-OH), CH, CH, CH-CH-OH, фенил или п-CH-фенил и Kозначает катион щелочного металла или один эквивалент катиона, выбранного из Ca, Mg, Sr, Ba, Zn, Fe, Fe, Al, Mnили Cuи c) частицы гидрата силиката кальция. Изобретение развито в зависимых пунктах формулы изобретения. 6 н. и 12 з.п. ф-лы, 4 табл.

СПОСОБНАЯ К ОТВЕРЖДЕНИЮ СМЕСЬ

Настоящее изобретение касается способной к отверждению смеси, пригодной для получения у затвердевшей смеси свойства «легкости для уборки», содержащей по меньшей мере один минеральный связующий агент, порошок, включающий в себя по меньшей мере одно соединение кремния с фторорганическими заместителями, которое инкапсулировано внутри водорастворимого полимера, причем количество соединения кремния с фторорганическим заместителем составляет от 0,001 до 8 мас.% от имеющейся смеси и при необходимости прочие добавки, а также способа ее изготовления и ее применения. Кроме того, изобретение касается редиспергируемого в воде порошка, а также соответствующего промежуточного продукта для применения в способной к отверждению смеси для получения в затвердевшей смеси свойства «легкости для уборки». Кроме того, испрашивается защита для способа изготовления порошка и его применения. 10 н. и 13 з.п. ф-лы, 5 табл.

ПОРОШКООБРАЗНАЯ КОМПОЗИЦИЯ

Группа изобретений относится к порошкообразной композиции и к способу ее производства. Порошкообразная композиция, которая не содержит углеводород Х и содержит, как главные составляющие а) от 5 до 40 мас.%, по меньшей мере, одного производного жирной кислоты и/или производного жирного спирта, которые не являются углеводородом Х, b) от 0,5 до 10 мас.%, по меньшей мере, одного силиконового масла и с) от 20 до 85 мас.%, по меньшей мере, одного материала-подложки, где компоненты а) и b) были нанесены на материал-подложку с). Способ производства указанной композиции, включающий предварительное смешивание компонентов а) и b), распыление полученной гомогенизированной жидкой смеси на сухой компонент материала-подложки с) с получением продукта в виде порошка, предпочтительно содержащего влаги не более чем 1 мас.%. Применение указанной композиции в качестве противовспенивателя для сухих строительных растворов. Изобретение развито в зависимых пунктах формулы изобретения. Технический результат - улучшение ...

ФОТОКАТАЛИТИЧЕСКИЕ КОМПОЗИЦИОННЫЕ МАТЕРИАЛЫ, СОДЕРЖАЩИЕ ТИТАН И ИЗВЕСТНЯК БЕЗ ДИОКСИДА ТИТАНА

Изобретение может быть использовано в производстве строительных материалов. Фотокаталитический композиционный материал практически без диоксида титана содержит известняк по меньшей мере 0,05% по весу натрия и титанат кальция в кристаллических фазах СТ2 и/или СТ5, характеризуемых следующими дифракционными максимумами: СТ2: (002) d=4,959; (210-202) d=2,890; (013) d=2,762 и (310-122) d-2,138; СТ5: (002) d=8,845; (023) d-4,217; (110) d=3,611 и (006) d=2,948. Эмпирическая формула титаната кальция в фазе СТ2 - CaTiO, а эмпирическая формула титаната кальция в фазе СТ5 - СаTiО. Изобретение позволяет повысить фотокаталитическую активность композиционных материалов без использования диоксида титана. 7 н. и 11 з.п. ф-лы, 8 ил., 7 прим.

МАТЕРИАЛ ДЛЯ ЦЕМЕНТАЦИИ И СПОСОБ ФОРМОВАНИЯ

Изобретение относится к к материалу для цементации и способам формования массы твердого вещества с использованием в качестве исходного сырья материала для цементации. Изобретение может найти применение не только для производства бетона, который широко применяется в строительстве, но также для капсулирования в контейнерах, представляющих опасность веществ. Материал для цементации с самодиспергированием при его вводе в контакт с объемом, содержащий воду жидкости или пульпы, который затвердевает в твердую массу после такого диспергирования, причем этот материал содержит композицию, которая представляет собой следующую смесь: компонент А: цементирующая образующая, составляющая 10 - 95 вес.% композиции; компонент В: образующая, способствующая развитию механизма разложения, составляющая 2 - 75 вес.% композиции; компонент С: образующая, способствующая набуханию, составляющая до 50 вес.% композиции; компонент D: образующая связывания, составляющая 0,1 - 10,0 вес. % композиции. При формовании массы ...

БЕТОННАЯ КОМПОЗИЦИЯ (ВАРИАНТЫ)

Изобретение относится к составам бетонных композиций и может быть использовано в гидротехническом, мелиоративном, промышленно-гражданском и транспортном строительстве, преимущественно в технологиях производства конструкционных бетонов, торкретбетонов и цементационных - тампонажных растворов. Технический результат - повышение прочности на изгиб. Бетонная композиция для производства конструкционных материалов, торкретбетонных и цементационных работ содержит, мас.%: портландцемент 24,0-25,0, микрокремнезем конденсированный с удельной поверхностью (15-25)·103 см2/г 4,0-5,5, кварцевый песок фракции менее 0,14 мм 20,0-21,0, кварцевый песок фракции 1,25-2,50 мм 28,0-31,0, суперпластификатор С-3 0,4-0,8, молотый кварцевый песок с удельной поверхностью (3,5-4,0)·103 см2/г 6,5-8,0, комплексную добавку - продукт совместного интенсивного сухого измельчения до удельной поверхности (4,0-4,5)·103 см2/г клинкерного алюминатного цемента марки «500» или «600» с долей трехкальциевого алюмината С3А 8-12%, ...

ДОБАВКА К ГИПСОВОМУ ВЯЖУЩЕМУ

Изобретение относится к области строительных материалов, в частности к добавкам, используемым для при получении гипсовых вяжущих. Повышенная прочность при сжатии и экономия гипса до 20% достигается введением в гипсовые вяжущие добавки, содержащей сухой порошок суперпластификатора С-3 и дополнительно цеолитсодержащую породу, обожженную при 800oC и бой силикатного кирпича. 1 табл.

КОМПОЗИЦИЯ ЗАЛИВОЧНОГО МАТЕРИАЛА НА ГИПСОВОЙ ОСНОВЕ ДЛЯ ЛИТЬЯ И СПОСОБ ПРОИЗВОДСТВА КОМПОЗИЦИИ ЗАЛИВОЧНОГО МАТЕРИАЛА НА ГИПСОВОЙ ОСНОВЕ ДЛЯ ЛИТЬЯ

Изобретение относится к литейному производству и может быть использовано в стоматологии. Способ изготовления литейной наливной формовочной смеси быстрого разогрева в виде изделия включает получение порошкообразной композиции, средний диаметр частиц которой равен 30 мкм или менее, добавление в нее затворяющей жидкости и затворение для последующего отверждения в виде изделия в высокотемпературной печи. В качестве основных компонентов порошкообразная композиция содержит обожженный гипс, кварц и кристобалит, а также порошкообразный или низководный жидкий влагоудерживающий компонент. При приготовлении порошкообразной композиции осуществляют соизмельчение материала, состоящего из по меньшей мере одного из: обожженного гипса и кварца, обожженного гипса и кристобалита, обожженного гипса, кварца и кристобалита, а во время смешивания основных компонентов добавляют порошкообразный или низководный жидкий влагоудерживающий компонент. Обеспечивается сокращение времени выдержки для отверждения смеси в ...

СМЕСИ, СОДЕРЖАЩИЕ КРЕМНИЙОРГАНИЧЕСКИЕ СОЕДИНЕНИЯ, И ИХ ПРИМЕНЕНИЕ

... 1. Применение, по меньшей мере, одной диспергируемой, редиспергируемой или растворимой в воде смеси, на основе ! (i) по меньшей мере, одного водорастворимого полимера и ! (ii) по меньшей мере, одного кремнийорганического соединения, для защиты субстратов от коррозии, причем кремнийорганическое соединение выбирают из группы органофункциональных силанов, полисиланов, сложных эфиров силанов, силоксанов, силиконов и/или эфиров кремниевой кислоты. ! 2. Применение по п.1, причем кремнийорганическое соединение выбирают из группы органофункциональных силанов, органофункциональных силоксанов, включая олигомерные эфиры кремниевой кислоты, полисиланов и силиконов. ! 3. Применение по п.1, причем субстратами являются металл, а также природные и/или изготовленные минеральные строительные материалы, причем металл предпочтительно находится в среде минеральных строительных материалов, а строительные материалы предпочтительно представляют собой строительный камень, элементы конструкций, раствор и/или бетон ...

СПОСОБ ПРИГОТОВЛЕНИЯ АНТИСЕПТИЧЕСКОЙ ДОБАВКИ ДЛЯ СУХОЙ СТРОИТЕЛЬНОЙ СМЕСИ И АНТИСЕПТИЧЕСКАЯ ДОБАВКА ДЛЯ СУХОЙ СТРОИТЕЛЬНОЙ СМЕСИ

... 1. Способ приготовления антисептической добавки для сухой строительной смеси, включающий перемешивание компонентов указанной добавки, содержащей коллоидное серебро, в смесительном устройстве с получением однородной массы обогащенного коллоидным серебром известкового теста, последующую сушку, помол и финишное перемешивание продукта, при этом группа технологических операций и их последовательность следующие: ! пропускание постоянного электрического тока через погруженные в воду электроды, при этом серебряный электрод (анод), растворяясь, насыщает воду ионами серебра Ag+, причем концентрация полученного раствора при заданной силе тока через электроды зависит от времени работы источника тока и объема обрабатываемой воды, а коллоидный раствор содержит частицы серебра самой высокой пробы от 0,005 до 0,015 мкм; ! получение раствора коллоидного серебра, при этом раствор коллоидного серебра, используемый при затворении извести, представляет собой раствор, состоящий из чистой, деминерализованной ...

НОВЫЙ МАТЕРИАЛ И ЕГО ПОЛУЧЕНИЕ ДЛЯ ИСПОЛЬЗОВАНИЯ В КАЧЕСТВЕ АККУМУЛИРУЮЩЕЙ СРЕДЫ В ОЩУЩАЕМОЙ СИСТЕМЕ ДЛЯ НАКОПЛЕНИЯ ЭНЕРГИИ В ДИАПАЗОНЕ НИЗКИХ, СРЕДНИХ ИЛИ ВЫСОКИХ ТЕМПЕРАТУР

ПЕНООБРАЗОВАТЕЛЬ ДЛЯ ВЯЖУЩЕГО ТЕСТА ДЛЯ СТРОЙМАТЕРИАЛОВ

РЕДИСПЕРГИРУЕМЫЙ ПОЛИМЕРНЫЙ ПОРОШОК

... 1. Водорастворимый полимерный порошок, содержащий по меньшей мере один модифицированный натуральный латекс, где модифицированный натуральный латекс получают: ! - путем смешивания натурального латекса с по меньшей мере одним радикальным инициатором и/или окисляющим агентом, или ! - путем смешивания и взаимодействия натурального латекса с по меньшей мере одним мономером ненасыщенного олефина и с по меньшей мере одним радикальным инициатором. ! 2. Полимерный порошок по п.1, отличающийся тем, что порошок полимера содержит ! - до 95 вес.% по меньшей мере одного модифицированного натурального латекса, ! - от 0 до 50 вес.% по меньшей мере одного защитного коллоида, ! - от 2 до 70 вес.% по меньшей мере одного наполнителя и/или агента, предотвращающего спекание, а также ! - необязательно дополнительные добавки, ! с характеристикой в вес.% на основе общей массы композиции полимерного порошка и в каждом случае с добавлением до 100 вес.%. ! 3. Полимерный порошок по п.1 или 2, отличающийся тем, что ...

Композиция, содержащая модифицированный красный шлам с низким содержанием хроматов, и способ ее получения

ДОБАВКА ДЛЯ ЦЕМЕНТИРОВАНИЯ БУРОВЫХ СКВАЖИН

... 1. Добавка на основе полиалкиленимина и сульфонированного, содержащего формальдегид продукта конденсации, отличающаяся тем, что добавка в качестве продукта конденсации содержит сульфонированную кетон/формальдегидную смолу. ! 2. Добавка по п.1, отличающаяся тем, что полиалкиленимин представляет собой, по меньшей мере, один представитель из ряда полиэтиленимина, полипропиленимина, полибутиленимина, и в особенности полиэтиленимин. ! 3. Добавка по одному из пп.1 или 2, отличающаяся тем, что добавка в качестве полиэтиленимина содержит соединение общей формулы (C2H5N)n с предпочтительным молекулярным весом Mw от 10000 до 3500000 г/моль, в особенности от 1000000 до 3000000 г/моль и особенно предпочтительно от 1500000 до 2500000 г/моль. ! 4. Добавка по п.1, отличающаяся тем, что продукт конденсации в качестве кетона содержит, по меньшей мере, один представитель монокетонов и дикетонов, преимущественно ацетон, бутанон, пентанон, гексанон и циклические кетоны, такие как циклогексанон, и в особенности ...

ВСПЕНИВАЮЩЕЕ СРЕДСТВО И СПОСОБ ВСПЕНИВАНИЯ И СТАБИЛИЗАЦИИ СТРОИТЕЛЬНОЙ ПАСТЫ ДЛЯ ПОРИСТОГО ЛЕГКОГО СТРОИТЕЛЬНОГО МАТЕРИАЛА

ГИДРОФОБИЗИРУЮЩИЙ МИНЕРАЛЬНЫЙ ПОРОШОК С АНТИСЛЁЖИВАЮЩИМ ЭФФЕКТОМ

ПРИМЕНЕНИЕ СУСПЕНЗИЙ CSH В ЦЕМЕНТИРОВАНИИ СКВАЖИН

... 1. Применение композиции ускорителя схватывания для неорганических связующих веществ, которая содержит по меньшей мере один водорастворимый гребенчатый полимер и частицы гидрата силиката кальция при цементировании буровых нефтяных и газовых скважин, в особенности в областях вечной мерзлоты и в шельфовой зоне, причем гребенчатый полимер представляет собой сополимер, который на основной цепи имеет боковые цепи, включающие полиэфирные функциональные группы, а также кислотные функциональные группы, отличающееся тем, что частицы гидрата силиката кальция являются менее чем 5 мкм, преимущественно менее чем 1 мкм, более предпочтительно менее чем 500 нм, особенно предпочтительно менее чем 200 нм и в особенности менее чем 100 нм.2. Применение по п.1, отличающееся тем, что композиция ускорителя схватывания применяется в виде суспензии, предпочтительно в виде водной суспензии.3. Применение по п.1, отличающееся тем, что композиция ускорителя схватывания применяется в порошковой форме.4. Применение по ...

ПОРОШКООБРАЗНАЯ КОМПОЗИЦИЯ

... 1. Порошкообразная композиция, которая не содержит углеводородов Х и содержит как главные составляющиеa) от 5 до 40 мас.% по меньшей мере одного производного жирной кислоты и/или производного жирного спирта, которое не является углеводородом X,b) от 0,5 до 10 мас.% по меньшей мере одного силиконового масла иc) от 20 до 85 мас.% по меньшей мере одного материала-подложки, где компоненты а) и b) были нанесены на материал-подложку с).2. Композиция по п.1, характеризующаяся тем, что она содержит компонент а) в пропорциях от 20 до 35 мас.%, предпочтительно от 25 до 30 мас.%, компонент b) в пропорциях от 1 до 5 мас.%, предпочтительно от 2 до 4 мас.%, и/или компонент с) в пропорциях от 40 до 75 мас.%, предпочтительно от 50 до 70 мас.%.3. Композиция по одному из пп.1 или 2, характеризующаяся тем, что компоненты а) и b) присутствуют в массовом соотношении а): b) как 80-90:20-10, предпочтительно 85:15 и наиболее предпочтительно 90:10.4. Композиция по п.3, характеризующаяся тем, что компонент а) является ...

СОСТАВ ДОБАВКИ ДЛЯ БЕТОННОЙ СМЕСИ И ПОВЕРХНОСТНОЙ ОБРАБОТКИ БЕТОНА "КАЛЬМАТРОН"

Изобретение относится к составам функциональных комплексных химических добавок, позволяющим повысить прочность, водонепроницаемость и устойчивость к агрессивным средам бетона, и может найти применение в промышленности строительных материалов и в строительстве. Состав включает, мас.%: углекислый натрий 30,0 - 51,3, сернокислый натрий 20,5 - 40,0, хлористый натрий 0,4 - 0,5, азотнокислый натрий 14,5 - 27,7 и азотнокислый кальций 0,1 - 15,0. Состав может вводиться в бетонную смесь или смешиваться с бетонной смесью и водой и наноситься на поверхность изделий из бетона.

ФОТОКАТАЛИТИЧЕСКИЕ КОМПОЗИЦИОННЫЕ МАТЕРИАЛЫ, СОДЕРЖАЩИЕ ТИТАН И ИЗВЕСТНЯК БЕЗ ДИОКСИДА ТИТАНА

... 1. Фотокаталитический композиционный материал практически без диоксида титана, содержащий известняк и титанат кальция в кристаллических фазах СТ2 и/или СТ5, характеризуемых следующими дифракционными максимумами: ! - СТ2: (002) d=4,959; (210-202) d=2,890; (013) d=2,762 и (310-122) d=2,138; ! - СТ5: (002) d=8,845; (023) d=4,217; (110) d=3,611 и (006) d=2,948, ! отличающийся тем, что эмпирическая формула титаната кальция в фазе СТ2 - CaTi2O5, а эмпирическая формула титаната кальция в фазе СТ5 - CaTi5O11. ! 2. Композиционный материал по п.1, отличающийся тем, что упомянутые максимумы фазы СТ2 индексированы орторомбической ячейкой, имеющей следующие параметры сетки: а=7,1Å, b=5,0Å, с=9,9Å. ! 3. Композиционный материал по п.1, отличающийся тем, что упомянутые максимумы фазы СТ5 индексированы орторомбической ячейкой, имеющей следующие параметры сетки: а=3,8Å, b=12,1Å, с=17,7Å. ! 4. Композиционный материал по пп.1-3, отличающийся тем, что фаза СТ2 присутствует в количестве, равном или схожим с ...

ТЕХНОЛОГИЧЕСКАЯ УСТАНОВКА ДЛЯ ПРОИЗВОДСТВА КОМПОЗИТНЫХ ЦЕМЕНТИРУЮЩИХ МАТЕРИАЛОВ С УМЕНЬШЕННЫМ ВЫДЕЛЕНИЕМ ДВУОКИСИ УГЛЕРОДА

... 1. Технологическая установка для приготовления композитных цементирующих материалов, таких как гидравлические смешанные цементы, со значительно уменьшенным содержанием минералов портландцементного клинкера и, соответственно, с увеличенным количеством дополнительных цементирующих материалов, таких как, например, зола-унос, шлак доменных печей, измельченный кварц, мелочь гранитных карьеров и подобных материалов, и высоко реакционно-способных пуццолан или минеральных наполнителей, таких как, например, зола-унос, шлак доменных печей, измельченный кварц, гранитная каменная мелочь и тому подобное для прямой замены части портландцемента в бетоне, включающая бункер для портландцемента, бункер для золы-уноса или другого типа дополнительных материалов и бункер для пыли цементообжигательной печи или другого типа агента, регулирующего время схватывания, установку для хранения полимерной добавки, пропорционирующие устройства, перемешивающие устройства, измельчающие устройства и устройства выгрузки, ...

КОМПЛЕКСНАЯ ДОБАВКА ДЛЯ СУХИХ СТРОИТЕЛЬНЫХ СМЕСЕЙ

Комплексная добавка для сухих строительных смесей, включающая метилцеллюлозу, отличающаяся тем, что она содержит молотую силикат-глыбу и технический хлористый кальций при следующем соотношении компонентов, мас.ч.: Метилцеллюлоза 1 Молотая силикат-глыба 0,8-1,2 Технический хлористый кальций 0,8-1,2 ...

VERWENDUNG VON WASSERLÖSLICHEN POLYMEREN ALS TROCKNUNGSHILFMITTEL FÜR DIE HERSTELLUNG POLYMERER DISPERGIERMITTEL

Polymerpulver enthaltende Baustofftrockenformulierungen

Gegenstand der Erfindung sind Baustofftrockenformulierungen enthaltend ein oder mehrere hydraulisch abbindende Bindemittel, ein oder mehrere Füllstoffe, ein oder mehrere Polymerisate in Form von in Wasser redispergierbaren Pulvern (Polymerpulver) und gegebenenfalls ein oder mehrere Zusatzstoffe, dadurch gekennzeichnet, dass die Polymerpulver erhältlich sind durch Trocknen von wässrigen Dispersionen enthaltend ein oder mehrere Silicasole und ein oder mehrere Polymerisate von ethylenisch ungesättigten Monomeren.

Zusammensetzung zur Optimierung von mineralischen Baustoffmassen

Gegenstand der vorliegenden Erfindung sind Zusammensetzungen die geeignet sind mineralische Baustoffmassen in der Weise zu optimieren, dass insbesondere das Fließverhalten und die Entlüftung der Massen positiv beeinflusst werden wodurch sehr glatte, nahezu porenfreie Oberflächen erzielt werden können.

Hydrophobierendes Additiv

Gegenstand der Erfindung ist ein hydrophobierendes, in Wasser redispergierbares Additiv auf Basis von Fettsäuren sowie deren Derivate, enthaltend DOLLAR A a) 30 bis 95 Gew.-% ein oder mehrere, wasserlösliche Schutzkolloide, DOLLAR A b) 5 bis 70 Gew.-% ein oder mehrere Verbindungen aus der Gruppe, umfassend DOLLAR A b1) Fettsäuren und Fettsäurederivate, die unter alkalischen Bedingungen Fettsäure oder das entsprechende Fettsäureanion freisetzen, DOLLAR A gegebenenfalls in Kombination mit DOLLAR A b2) einer oder mehreren Organosilicium-Verbindungen, und DOLLAR A c) 0 bis 30 Gew.-% Antiblockmittel, DOLLAR A wobei die Angaben in Gew.-% auf das Gesamtgewicht des Additivs bezogen sind und sich auf 100 Gew.-% aufaddieren.

Beschichtungsmassen auf Basis von in Wasser redispergierbaren, wasserlösliches Polymer und Organosiliciumverbindung enthaltenden Pulvern

Adhesive strength enhancers for cementitious compositions

An adhesion bond strength enhancer for cementitious adhesive mortar is disclosed. The adhesion enhancer improves bond strength between the mortar and relatively hydrophobic plastic material, such as extruded polystyrene boards and expanded polystyrene boards of the type generally employed in Exterior Insulation Finishing Systems ("EIFS"). Preparation of non-caking, free-flowing, solid dialkyl sulfosuccinate compositions for use as the adhesion enhancer is also disclosed. The adhesion enhancer is attractive for large-scale application in mineral mortar dry-mixes or other solid construction materials. The invention can be used to improve the strength of an adhesive bond between a) gypsum based plaster or stucco and concrete or bricks, b) tile adhesives and concrete, and c) mineral mortars on polystyrene boards, among others.

Binder for Screed

Manufactured aggregate

IMPROVEMENTS RELATING TO CEMENT COMPOSITIONS

... 1299792 Cement compositions BYRON JACKSON Inc 10 March 1970 [14 April 1969] 11500/70 Heading C1H [Also in Division G2] A method of preparing a composition which is suitable for cementing a well and which contains an additive comprises the steps of uniformly mixing the additive with a predetermined amount of a soluble dyestuff, then blending the resulting mixture with the other ingredients of the composition. Specified additives are spedumene, sand, silica, a polyvinylpyrrolidone reacted with formaldehyde-naphthalene sulphonate, a lignosulphonate, cellulose ethers and tartaric acid, and the presence of the dye enables the distribution of the additive in the cement composition to be checked.

Sand standardized

HYDROPHOBIERENDES, IN WATER REDISPERGIERBARES POLYMER POWDER

USE OF IN WATER REDISPERGIERBAREN POLYMER POWDERS AS BONDING AGENTS FOR JOINING AND

REDISPERGIERBARE DISPERSION POWDERS FOR HEAT DAMMING OF COMPOUND SYSTEMS

USE OF A HYDRAULIC BONDING AGENT WITH PHOTO CATALYST PARTICLES

PROCEDURE FOR THE TREATMENT OF FLY ASH

REDISPERGIERMITTEL FOR REDISPERGIERBARE POLYMER POWDERS AND THIS CONTAINING REDISPERGIERBARE POLYMER POWDER

Adhesive booster for cementitious compositions

Ein Klebkraftverstärker für Zementklebemörtel ist offenbart. Der Klebeverstärker verbessert die Verbindungskraft zwischen dem Mörtel und relativ hydrophobem Kunststoffmaterial wie Platten aus extrudiertem Polystyrol und Platten aus geschäumtem Polystyrol des in Wärmedämmverbundsystemen ("WDVS") eingesetzten Typs. Die Herstellung von nicht verklumpenden, rieselfähigem Dialkylsulfosuccinatzusammensetzungen zur Verwendung als Klebeverstärker ist ebenfalls offenbart. Der Klebeverstärker ist zur großangelegten Anwendung in Mineralmörtel-Trockengemischen oder anderen festen Baumaterialien geeignet. Die Erfindung kann zum Verbessern der Kraft einer Klebeverbindung unter anderem zwischen a) Putz oder Stuck auf Gipsbasis und Beton oder Ziegeln, B) Fliesenklebern und Beton und c) Mineralmörteln auf Polystyrolplatten verwendet werden.

Klebkraftverstärker für Zementzusammensetzungen

An adhesion bond strength enhancer for cementitious adhesive mortar is disclosed. The adhesion enhancer improves bond strength between the mortar and relatively hydrophobic plastic material, such as extruded polystyrene boards and expanded polystyrene boards of the type generally employed in Exterior Insulation Finishing Systems ("EIFS"). Preparation of non-caking, free-flowing, solid dialkyl sulfosuccinate compositions for use as the adhesion enhancer is also disclosed. The adhesion enhancer is attractive for large-scale application in mineral mortar dry-mixes or other solid construction materials. The invention can be used to improve the strength of an adhesive bond between a) gypsum based plaster or stucco and concrete or bricks, b) tile adhesives and concrete, and c) mineral mortars on polystyrene boards, among others.

Trockene Zementmischung

Eine Trockenzementmischung umfasst Portlandzement und eine ultra-feine Komponente, bestehend aus mindestens einem ultra-feinen Zusatzstoff, wobei besagte ultra-feine Komponente ein hydraulisches Bindemittel ist und Portlandzement in einer Menge von mindestens 80 Gew.-% der Mischung vorhanden ist und die ultra-feine Komponente in einer Menge von mindestens 5 Gew.-% der Mischung vorhanden ist, wobei die ultra-feine Komponente eine Partikelgrößenverteilung gekennzeichnet durch einen Partikeldurchmesser 010 zwischen O,Spm und 2pm und einen Partikeldurchmesser 090 zwischen 2pm und 8pm aufweist.

Procedure for the production of a road pavement under application of hydraulic bonding agents and bitumen.

DISPERSION POWDER COMPOSITION.

PORE SCREEN END CONCRETE ADDITIVE

DISPERSION POWDER CONTAINING OPTICAL AUFHELLER, PROCEDURE FOR THEIR PRODUCTION AS WELL AS THEIR USE

PROCEDURE FOR THE PRODUCTION OF POLYMER POWDER

SETTING ACCELERATOR, SPRAYING MATERIAL AND PROCEDURE THIS MATERIAL USE

MANUFACTURING PROCESS OF AN ACRYLATE RESIN POWDER

Procedure for the production sound and warm-damming mass

HYDROPHOBIERENDES, IN WATER REDISPERGIERBARES POLYMER POWDER

HYDROPHOBIERENDES, IN WATER REDISPERGIERBARES POLYMER POWDER

HYDROPHOBIERENDES, IN WATER REDISPERGIERBARES POLYMER POWDER

HYDROPHOBIERENDES, IN WATER REDISPERGIERBARES POLYMER POWDER

HYDROPHOBIERENDES, IN WATER REDISPERGIERBARES POLYMER POWDER

HYDROPHOBIERENDES, IN WATER REDISPERGIERBARES POLYMER POWDER

HYDROPHOBIERENDES, IN WATER REDISPERGIERBARES POLYMER POWDER

HYDROPHOBIERENDES, IN WATER REDISPERGIERBARES POLYMER POWDER

HYDROPHOBIERENDES, IN WATER REDISPERGIERBARES POLYMER POWDER

HYDROPHOBIERENDES, IN WATER REDISPERGIERBARES POLYMER POWDER

HYDROPHOBIERENDES, IN WATER REDISPERGIERBARES POLYMER POWDER

High- or ultra-high performance concrete

The invention relates to a bonding pre-mixture containing: 0.2% to 63% of a material of an ultrafine granulometric class that contains individual D90 particles of less than 1 m and/or of a specific BET surface area greater than 5 m ...

CONCRETE COLOURANTS

A method of colouring cementitious building materials such as concrete is disclosed. The method uses flowable, spray-dried, particulate formulations of inorganic pigments prepared using a selection of formulants that do not substantially effect primary ettringite formation. Quantities of the formulations may conveniently be dispensed into a slurry of cement and water by gravimetric or volumetric means.

Method for the manufacture of calcium silicate hydrate used as hardening accelerator in concrete and cement-based materials, calcium silicate hydrate manufactured with said method

A process for the manufacturing of a slurry containing nucleating agents which comprises reacting at least one source of a Ca containing compound with at least one source of a Si containing compound, in an aqueous media and in the presence of a doping agent selected from the group consisting of P, B, S, and mixtures thereof; wherein: (i) the reaction is carried out at a temperature comprised from 100 to 350 °C; (ii) the total molar ratio Ca/Si is 1.5 - 2.5, and (iii) the total molar ratio doping agent/Si is 0.01 - 2; provided that: (a) when the sole doping agent is P, the total molar ratio P/Si is 0.1 - 2; (b) when the sole doping agent is B, the total molar ratio B/Si is 0.01 - 2, and (c) when the sole doping agent is S, the total molar ratio S/Si is 0.1 - 2.

Composition for a pasty filler material, pasty filler, and method for producing a pasty filler material

The invention relates to a composition for a pasty filler material. comprising a binding agent, fillers, and additives, wherein the composition further comprises an additive consisting of a blend of liquid hydrocarbons, modified fatty acid derivatives, nonionic emulsifiers, and silicone oil; such a defoaming additive is e.g. known under the brandname Agitan 218. The invention further relates to a corresponding pasty filler material and a method for producing a pasty filler material.

Method for the manufacture of calcium silicate hydrate used as hardening accelerator in concrete and cement-based materials, calcium silicate hydrate manufactured with said method

A process for the manufacturing of a slurry containing nucleating agents which comprises reacting at least one source of a Ca containing compound with at least one source of a Si containing compound, in an aqueous media and in the presence of a doping agent selected from the group consisting of P, B, S, and mixtures thereof; wherein: (i) the reaction is carried out at a temperature comprised from 100 to 350 °C; (ii) the total molar ratio Ca/Si is 1.5 - 2.5, and (iii) the total molar ratio doping agent/Si is 0.01 - 2; provided that: (a) when the sole doping agent is P, the total molar ratio P/Si is 0.1 - 2; (b) when the sole doping agent is B, the total molar ratio B/Si is 0.01 - 2, and (c) when the sole doping agent is S, the total molar ratio S/Si is 0.1 - 2.

Solid particulate calcium nitrate composition comprising a solid particulate silicate as an anti-caking agent

The invention relates to a solid particulate calcium nitrate composition having particles with an average particle size of between 0.1 and 1 mm and comprising an anti-caking agent, wherein the anti-caking agent consists of a solid particulate silicate with an average particle size of between 0.05 and 750 μm. The invention furthermore relates to a pre-blend binder composition comprising such a solid particulate calcium nitrate composition. Also a dry mortar mix or tile adhesive composition and a dry concrete mix comprising an aggregate and such a pre-blend binder composition. Also a method for producing a solid particulate calcium nitrate composition, the use of a solid particulate silicate as anti-caking agent for a solid particulate calcium nitrate composition and the use of a solid particulate calcium nitrate composition as a setting accelerator for cementitious pre-blend binder composition are disclosed.

Grouting materials and their use

Procedure for preparing silica from calcium silicate

Water-redispersible powders of film-forming polymers prepared from ethylenically insaturated monomers

GYPSUM COMPOSITIONS WITH ENHANCED RESISTANCE TO PERMANENT DEFORMATION

A set of gypsum-containing composition is disclosed. In one aspect, the set gypsum-containing composition includes an interlocking matrix of the set gypsum formed from at least calcined gypsum, water, and an enhancing material. The enhancing material can be selected from (i) an organic polyphosphonic compound, or a mixture thereof; (ii) a borate selected from ulexite colemanite, or a mixxture thereof; of a mixture of (i) and (ii). In another aspect, the set gypsum-containing composition is treated with an enhancing material which can be selected from (i) an organic phosphonic compound or a mixture thereof; (ii) a borate selected from ulexite, colemanite, or a mixture thereof; (iii) a carboxylic compound or a mixture thereof; or a mixture of (i), (ii) and/or (iii).

REDISPERSIBLE POLYMER POWDER COMPOSITIONS PREPARED FROM STYRENE BUTADIENE-BASED LATEX FOR DRY MIX FORMULATIONS

Redispersible polymer powder compositions which include a polyglycol in admixture with a redispersible polymer powder (RDP), which powder includes a codried mixture of a carboxylated, water insoluble film-forming styrene butadiene polymer and a colloidal stabilizer, results in cement compositions having unexpectedly superior overall bonding strength and adhesion after water immersion. Use of the polyglycol provides good workability or ease of troweling during application. In addition, the RDP composition, which includes the RDP and the polyglycol, provides the cement-based composition with excellent abrasion resistance, surface appearance, and color. Also, the RDP composition provides for at least a 30% reduction, for example a 50% or more reduction in the amount of retarder or retardant employed in the dry mix formulation for cement compositions, such as self leveling flooring compounds or compositions, and cement-based tile adhesives.

METHOD FOR PROCESSING OF POZZOLANS.

Method for processing of pozzolans comprising fly ash such as Class F and/or Class C fly ash used for preparation of mortars and concretes, characterized in, that the pozzolans is subjected to a high energetic mechanical processing by means of grinding in a grinding equipment to a fineness of the final product with a retention on a sieve 30 microns being less than 5%, whereby the pozzolan particles receive mechanical impulses when non-cenosphere in the form of coarse scoria particles are disintegrated and whereby the surface of cenosphere grinded particles is activated.

GYPSUM-BASED INVESTMENT MATERIAL COMPOSITION FOR CASTING, AND METHOD FOR MANUFACTURING GYPSUM-BASED INVESTMENT MATERIAL COMPOSITION FOR CASTING

To provide a gypsum-based investment material composition for casting and a method for manufacturing the same, the investment material composition being useful as a flash-heating-type gypsum-based investment material for making it possible to provide a product in which exposure time is reduced, such reduced exposure time not having been realized in the conventional product. A gypsum-based investment material composition for casting and a method for manufacturing the same, the investment material composition being a gypsum-based powdery investment material composition for casting, for use as a flash-heating-type investment material to which a malaxation liquid is added, the mixture is cured after malaxation, and the cured product is placed in a high-temperature furnace, wherein the gypsum-based investment material composition for casting has calcined gypsum, quartz, and cristobalite as main components thereof, the gypsum-based investment material composition for casting includes a powder ...

NANOREDISPERSIBLE MICROPARTICLES OF DRIED CELLULOSE NANOCRYSTALS AND METHOD OF PRODUCTION THEREOF

A microparticle comprised of dried cellulose nanocrystals agglomerated together and forming said microparticle is provided, wherein the CNCs are surfaced-reduced carboxylated CNCs, and wherein the microparticle is nanoredispersible into its constituting cellulose nanocrystals in both aqueous and non-aqueous solvents. A method for producing nanoredispersible microparticles comprised of dried CNCs is also provided.

RAPID CURING MINERAL BINDER MIXTURE

The invention relates to a rapid curing mineral binder mixture containing - a zirconium(IV)-based accelerator, - cement containing one or more components selected from the compounds 3 CaO* AI 2 O 3, 12CaO*7AI 2 O 3, CaO*Al2O3, CaO*2AI 2 O 3, CaO*6Al2O3 and/or 4CaO*3Al2O3 *SO3, - a sulphate carrier in a ratio of 5-80 wgt.%, - optionally one or more alkaline components, and - optionally one or more additives.

NOVEL MATERIAL AND PRODUCTION THEREOF FOR USE AS STORAGE MEDIUM IN A SENSITIVE ENERGY STORAGE SYSTEM IN THE LOW-, MEDIUM- OR HIGH-TEMPERATURE SECTOR

The present invention relates to a modified red sludge or a modified bauxite residue and processes for producing same, and to a storage medium comprising a modified red sludge, a heat store comprising a storage medium and numerous uses of a modified red sludge as storage medium, more particularly in a heat store system. The modified red sludge here contains the following components: - haematite (Fe2O3), - corundum (AI2O3), - rutile (TiO2) and/or anatase (TiO2), - quartz (SiO2), - optionally perovskite (CaTiO3) and - optionally pseudobrookite ((Fe3+,Fe2+)2(Ti,Fe3+)O5) and/or nepheline ((Na,K)[AISiO4]). A novel material is thus provided, and production thereof is described for use as storage medium in a sensitive energy storage system in the low-, medium- or high-temperature sector.

STABILIZED REFRACTORY COMPOSITIONS

A refractory composition including refractory aggregate, one or more matrix components, and silicate-coated set accelerator particles. The silicate-coated set accelerator particles can include one more of silicate-coated calcium hydroxide, magnesium hydroxide, calcium chloride, calcium carbonate, magnesium carbonate and calcium sulfate. Suitable silicate coatings include sodium silicate, potassium silicate, lithium silicate and mixtures thereof. A method of recovering an aged refractory composition, a settable composition and a method of manufacturing silicate-coated calcium hydroxide particles are also provided.

GRAPHENE REINFORCED CONCRETE

A reinforced concrete material is described comprising a cementitious material (22) in which graphene is substantially uniformly distributed. A method of production of concrete is also described comprising the steps of forming a substantially uniform suspension (20) of graphene with water, and mixing the suspension (20) with a cementitious material (22) to form a concrete material (28).

CONCRETE ADMIXTURE, MORTAR ADMIXTURE AND BLENDED CEMENT

A concrete admixture or a mortar admixture which is obtained by mixing a silicate with an acid in the presence of water and then solidifying the mixture. It is preferable that the silicate is sodium silicate and the acid is a carboxylic acid. This admixture can improve a tensile strength of a concrete or a mortar. Since a concrete or a mortar containing the admixture, cement, an aggregate and water is high in tensile strength, it can advantageously be used in various concrete structures, concrete products or mortar products.

MODIFICATION OF PROPERTIES OF POZZOLANIC MATERIALS THROUGH BLENDING

Methods for producing a blended pozzolan having one or more characteristics, such as one or more chemical and/or physical characteristic, in an established amount or range from two or more different pozzolans. Two or more pozzolans having different chemical and/or physical characteristics can be blended together and a chemical analyzer used to determine a chemical and/or physical characteristic of the blended pozzolan. Upon determining that the chemical and/or physical characteristic of the blended pozzolan is outside the established amount or range, modifying a blending ratio of the two or more pozzolans to restore the chemical and/or physical characteristic to the established amount or range.

WATER-REDISPERSIBLE POLYMER POWDER

Polymer powders comprising in copolymerized form a) one or more vinyl aromatic comonomers, b) one or more 1,3-diene comonomers, c) from 0.1 to 15 percent, based on the total comonomer weight, of one or more comonomers selected from the group consisting of ethylenically unsaturated mono- and dicarboxylic acids and their salts, wherein at least 75 percent of the total number of carboxylic groups present in the polymer are located at the surface of the polymer particles in the powder and at least 75 percent of the carboxylic groups located at the surface of the polymer particles in powder are present in their salt form, and d) from 0 to 40 percent, based on the total comonomer weight, of one or more additional comonomers have an excellent redispersibility in water.

SETTING RETARDER FOR HYDRATE-FORMING BINDERS

The invention relates to a method for producing a setting retarder for hydrate-forming binders, wherein a) a first reactant A, comprising an amino acid and/or an amino acid derivative, is reacted with b) a second reactant C, comprising an amine-free carboxylic acid and/or an amine-free carboxylic acid derivative, to form a reaction product, characterized in that the reaction occurs at a pH value of 7.5 - 11.5 and the pH value is held constant in the specified range of 7.5 - 11.5 during the reaction. In order to hold the pH value constant in the specified range and to avoid fluctuations, in a method step an aqueous solution of reactant A is presented and a pH of 7.5 - 11.5, preferably 8 - 11, in particular 8.5 - 10.5, is set by adding base. In a second method step, partial amounts of the base and partial amounts of reactant C are alternately added in order to stabilize the pH value during the reaction.

POLYURETHANE POWDER BLEND WITH REDISPERSIBLE POLYMER POWDER FOR CEMENT COMPOSITIONS

Powdered polyurethane flexible foams, preferably powdered recycled polyurethane flexible foams are used with a redispersible polymer powder (RDP), preferably as a preblended additive, in hydraulic binders or cementitious compositions to improve performance of cementitious compositions or mortar, in applications such as cement based tile adhesives (CBTA), or external thermal insulating composite systems (ETICS). The use of the powdered polyurethane flexible foam as a partial replacement for an RDP unexpectedly provides an increase in wet mortar density while maintaining excellent workability and quick open time, quicker setting times, improved impact resistance, and increased adhesion after water immersion.

PHOTOCATALYTIC COMPOSITES CONTAINING TITANIUM AND LIMESTONE FREE FROM TITANIUM DIOXIDE

New photocatalytic product comprising compounds of titanium integrated with limestone. The product is obtained by reacting limestone with a suitable precursor of titanium dioxide in a basic solution, recovering the product in particular conditions, drying it and calcining it. By operating in presence of sodium, a composite is obtained substantially free from titanium dioxide, containing limestone and calcium titanate. The composite thus obtained, used as such or in mixture with other components, has shown an unexpectedly high photocatalytic activity.

ADMIXTURES FOR SHRINK CRACK REDUCTION OF PORTLAND CEMENT-BASED MORTARS AND CONCRETES

Portland Cement-based concretes and mortars exhibit significant reduction in shrinkage cracking when combined with Magnesium Oxide (MgO), Shrinkage Reduction Admixtures (SRA) and Super Absorbent Polymers (SAP). However, MgO is a solid that reacts with water, SRA is a liquid, and SAP if not added properly could pull water out of the system and thus increase shrinkage. Unique admixture blends used as supplementary cementing materials that do not significantly affect concrete or cement strength properties of Portland cement itself address such issues. Proper ratios of MgO, SRA and/or SAP perform better against crack reduction when compared to commonly used Expansive Cements (EC).

ADMIXTURES FOR SHRINK CRACK REDUCTION OF PORTLAND CEMENT-BASED MORTARS AND CONCRETES

Portland Cement-based concretes and mortars exhibit significant reduction in shrinkage cracking when combined with Magnesium Oxide (MgO), Shrinkage Reduction Admixtures (SRA) and Super Absorbent Polymers (SAP). However, MgO is a solid that reacts with water, SRA is a liquid, and SAP if not added properly could pull water out of the system and thus increase shrinkage. Unique admixture blends used as supplementary cementing materials that do not significantly affect concrete or cement strength properties of Portland cement itself address such issues. Proper ratios of MgO, SRA and/or SAP perform better against crack reduction when compared to commonly used Expansive Cements (EC).

REDISPERSIBLE POWDER COMPOSITION

COATING COMPOSITIONS BASED ON WATER-REDISPERSIBLE POWDERS COMPRISING WATER-SOLUBLE POLYMER AND ORGANOSILICON COMPOUND

Coating compositions based on water-redispersible powders comprising water-soluble polymer and organosilicon compounds, wherein the organosilicon compounds comprise at least one low molecular weight organosilicon compound having a viscosity of not more than 5,000 mm weight organopolysiloxane resin which has a viscosity of at least 100,000 mm temperature.

REDISPERSABLE POLYMER POWDER COMPOSITIONS CONTAINING CYCLODEXTRIN OR CYCLODEXTRIN DERIVATIVES

Redispersable polymer powder compositions contain homopolymers or copolymers of ethylenically unsaturated monomers and cyclodextrins or cyclodextrin derivatives having the general formula (I), in which n = 6, 7 or 8, the substituents R are identical of different and stand for H or R1, the substituents R1 are identical or different and stand for optionally substituted C1-C4-alkyl, hydroxy-C1-C4-alkyl, carboxy-C1-C4-alkyl, C2-C4-carboxyl residues. Also disclosed are a process for preparing these compositions and their use, as well as polymer dispersions stabilised with cyclodextrins or cyclodextrin derivatives obtained as intermediate products.

CROSS-LINKABLE PROTECTIVE COLLOIDS

The invention concerns water-soluble cross-linkable protective colloids having a molecular weight of 500000 and comprising: a) between 20 and 95 wt.% sulphonic-acid- or sulphonate-group-containing monomer units; b) between 4 and 80 wt.% N-methylol- or N-alkoxymethyl-group containing monomer units; and c) between 0.1 and 20 wt.% hydrophobic monomer units selected from the group comprising water-insoluble ethylenically unsaturated compounds and hydrophobic end groups of initiator radicals or regulator molecules, the portions in wt.% being relative to the total weight of the copolymer. The portion of sulphonicacid- or sulphonate-group-containing monomer units can optionally be substituted by up to 50 wt.%, relative to the portion by weight of monomer units a), by carboxyl-group-containing monomer units d) or amide-group-containing monomer units e).

surface building material mixture and compound surface systemadditive mixture for addition into a formed of the member.

Es wird Zusatzstoffgemisch zur Zugabe in ein Belagsbaustoffgemisch zur Bildung eines Verbundbelagssystems für den Boden-, Wand- oder Fassadenbereich offenbart, welches die Wärmeleitfähigkeit bzw. Wärmeableitung von Belagssystemen, insbesondere die Wärmeableitung durch mit den Belagssystemen beschichtete Objekte und Untergründe derart verringert, dass beim Betreten des mit dem Belagssystem versehenen Untergrundes kein Gefühl kalter Füsse mehr verbunden ist. Dies wird dadurch erreicht, dass das Zusatzstoffgemisch einen Anteil zwischen 50 Gew.% und 95 Gew.% Muskovit-Glimmer umfasst.

ADDITIVE MIXTURE FOR ADDITION TO MIXTURE OF MATERIALS FOR APPLYING COATINGS AND ARE FORMED BY WITH IT SYSTEM COMPOSITE COATINGS

ПРИМЕНЕНИЕ РЕДИСПЕРГИРУЕМОГО В ВОДЕ ПОРОШКА И ВОДНОЙ ДИСПЕРСИИ В ГИДРАВЛИЧЕСКИ ТВЕРДЕЮЩИХ СИСТЕМАХ ДЛЯ УМЕНЬШЕНИЯ ЭФФЛОРЕСЦЕНЦИИ

Настоящее изобретение относится к применению редиспергируемого в воде порошка и водной дисперсии в гидравлически твердеющих системах для уменьшения эффлоресценции. Порошок, редиспергируемый в воде, и водная дисперсия состоят из по меньшей мере одного органического компонента и по меньшей мере одного водорастворимого органического полимерного защитного коллоида и, если уместны дополнительные добавки с органическим компонентом, содержащим по меньшей мере одно соединение, имеющее циклическую группу, которое является полностью или частично насыщенным и имеющим температуру плавления примерно -20-250°С и также молекулярную массу примерно 100-10000, и также образующим стабильную дисперсию в воде с водорастворимым органическим полимерным защитным коллоидом при массовом отношении органического компонента к водорастворимому органическому защитному коллоиду, составляющем примерно 95:5-5:95. Редиспергируемый в воде порошок и водную дисперсию можно применять в гидравлически твердеющих массах, в частности ...

ДОБАВКА ДЛЯ ОТВЕРДЕВАЮЩИХ СТРОИТЕЛЬНЫХ МАТЕРИАЛОВ И ЕЕ ПРИМЕНЕНИЕ ДЛЯ БЕТОННОЙ СМЕСИ

Данное изобретение относится к добавке для отвердевающих строительных материалов и ее применению для бетонных смесей. Добавка включает: a) 1-8 весовых процентов ксантановой смолы; b) 1-6 весовых процентов псевдопластического загустителя вещества, включающего воду; c) 2-10 весовых процентов разбавителя; d) 20-50 весовых процентов синтетической смолы, совместимой с цементом; e) 0,1-3 весовых процентов пенообразователя; f) 30-70 весовых процентов ускорителя затвердевания; g) 0,2-4 весовых процентов консерванта. Причем полный вес всех компонентов добавки должен быть равен 100 весовым процентам. Добавка применяется в бетонных смесях в количестве 0,01-, главным образом 0,05-, добавки на кг цемента.

СПОСОБ И ДОБАВКА ДЛЯ УЛУЧШЕНИЯ АДГЕЗИИ СТРОИТЕЛЬНЫХ КОМПОЗИЦИЙ К ОСНОВАНИЯМ

Изобретение относится к использованию добавки, а также к способу для улучшения адгезии строительного раствора к строительному основанию, где строительный раствор смешивают с указанной добавкой и наносят на строительное основание, выбранное из группы полистиролсодержащих оснований, полиолефинсодержащих оснований или поливинилхлоридсодержащих оснований, причем добавка содержит: (i) пластификатор, который является жидкостью при 50°С или ниже, имеет точку кипения, равную 100°С или выше и который имеет параметр растворимости β при 25°С от 22,5 МПа1/2 до 11 МПа1/2; (ii) необязательно наполнитель, который имеет площадь поверхности по БЭТ, равную по меньшей мере 40 м2/г; (iii) необязательно биополимер; (iv) необязательно защитный коллоид; и (v) необязательно нерастворимый в воде пленкообразующий (со)полимер на основе мономеров с этиленовой ненасыщенностью. Изобретение также охватывает добавку и комплект компонентов, которые подходят для использования в вышеуказанном способе.

Concrete with a low clinker content

A dry binder premix includes, in mass proportions: Portland clinker having a Blaine specific surface area comprised from 4500 to 9500 cm 2 /g, the minimum quantity of the clinker by mass percentage relative to the total mass of the premix being determined according to: [−6.10 −3 ×BSS k ]+75, in which BSS k is the Blaine specific surface area of the clinker given in cm 2 /g; fly ash; an alkali sulphate; one source of SO 3 ; complementary materials having a Dv90 less than or equal to 200 μm selected from limestone powders, calcined shale, metakaolins, siliceous fillers, silica powders, pozzolans, slags, fly ash and mixtures thereof A quantity of clinker+the quantity of fly ash is greater than or equal to 75% by mass percentage relative to the total mass of the premix and a total quantity of clinker in the premix is less than 60% by mass percentage relative to the total mass of the premix.

High or ultra-high performance concrete

A binder premix includes from 0.2% to 63% of a material of an ultrafine particle size category, including individual particles with a D90 value less than 1 μm and/or with a BET specific surface greater than 5 m 2 /g; from 8% to 63% of selected Portland cement including particles with a D90 value less than 30 μm and from 25% to 85% of a material, other than the cement, of a fine particle size category, including particles for which the D10 and D90 values are from 1 μm to 120 μm and with a BET specific surface less than 5 m 2 /g. A binder mix including, in addition to the premix, a material of a medium particle size category, including particles for which the D10 and D90 values are from 120 μm to 5 mm is disclosed.

Systems and methods for processing co2

Systems and methods for lowering levels of carbon dioxide and other atmospheric pollutants are provided. Economically viable systems and processes capable of removing vast quantities of carbon dioxide and other atmospheric pollutants from gaseous waste streams and sequestering them in storage-stable forms are also discussed.

Additive Composition for Mortars, Cements and Joint Compounds and Cementitious Compositions Made Therefrom

An additive composition for mortars, exterior insulation finish systems, self-leveling compounds and joint compounds is disclosed. The additive composition contains a nitrogen-containing polymer and a reactive agent capable of forming a crosslinking reaction with the nitrogen-containing polymer. Small amounts of the additive composition contained in a product not only can increase one or more properties of the product but can also minimize the use of redispersible polymers in the product.

Curable mixture

The present invention relates to a curable mixture suitable for obtaining “easy-to-clean” properties in the cured mixture, comprising at least one mineral binder, a powder comprising at least one fluoroorganyl-substituted silicon compound encapsulated in a water-soluble polymer, the amount of the silicon compound being 0.001% to 8% by weight, based on the present mixture, and optionally further adjuvants, and also to a process for preparing the mixture and to the use thereof. The invention further relates to a water-redispersible powder and also to a corresponding intermediate for use in the curable mixture in order to obtain “easy-to-clean” properties in the cured mixture. Also claimed, furthermore, is a process for preparing the powder, and the use thereof.

Cellulose ether and microcrystalline cellulose in inorganic binder compositions

A new water-based inorganic binder composition includes inorganic binder, cellulose ether and microcrystalline cellulose. A new additive for water-based inorganic binder compositions includes cellulose ether and microcrystalline cellulose. A method for improving the properties of water-based inorganic binder compositions includes blending a combination of cellulose ether and microcrystalline cellulose in the water-based binder composition.

Agglomerated particulate lignosulfonate

An agglomerated particulate lignosulfonate material may he made by introducing or forming lignosulfonate microparticles in a fluidized bed agglomerator, and introducing sufficient heated gas and lignosulfonate liquid in the agglomerator to convert the microparticles to lignosulfonate granules of enlarged size. The granules may have an average size of at least 0.1 mm, and may be used to make a dry-blended cement additive or oil well cement that may be dustless, easily poured and stored, and rapidly dissolved in water.

Setting retarder for hydrate-forming binders

A method for producing a setting retarder for hydrate-forming binders, wherein a) a first reactant A, comprising an amino acid and/or an amino acid derivative, is reacted with b) a second reactant C, including an amine-free carboxylic acid and/or an amine-free carboxylic acid derivative, to form a reaction product, characterized in that the reaction is carried out at a pH value of 7.5-11.5 and the pH value is held constant in the specified range of 7.5-11.5 during the reaction. In order to hold the pH value constant in the specified range and to avoid fluctuations, in one process step an aqueous solution of reactant A is prepared and a pH of 7.5-11.5, preferably 8-11, in particular 8.5-10.5, is set by adding a base.

Composition for the Optimization of Mineral Building Material Compositions

The present invention relates to compositions which are suitable for optimizing mineral building material compositions so that the flow behaviour and the deaeration of the compositions is positively influenced, as a result of which very smooth, virtually pore-free surfaces can be achieved. The compositions can consist of a mixture or comprise a mixture which contains at least one component (a) which comprises a compound N which displays a wetting action in aqueous cement-containing binder systems and contains at least one further component (b) which comprises a compound E which has antifoam properties in aqueous cement-containing binder systems. The compound N in component a) can preferably be a nonionic or amphoteric surfactant, preferably an alkyl alkoxylate or a betaine. The compound E in component b) can preferably be a polyetherpolysiloxane on a support material.

Clay plaster and a method of its realization

The object of the invention is a clay plaster and a method of performing the clay plaster, wherein the clay plaster comprising clay and optionally aggregates in the form of sand, organic and/or mineral fillers, characterizes in that it comprises clay in an amount of more than 40% by weight, preferably more than 60% by weight, and more preferably more than 80% by weight, and most preferably 100% by weight of content based on the clay plaster dry matter, wherein the clay is in a powder form and granular form, whereby the amount of clay powder does not exceed 80% by weight of the granular clay and optionally comprises a mineral and/or organic filler in an amount of not more than 60% by weight, as well as possible modifying additives, additives increasing the adhesion to the substrate, additives delaying the time of granular clay soaking, retention additives and/or pigments, wherein the amount of additives is not more than 10% by weight based on the clay plaster dry matter and the method of performing the clay plaster according to the invention consists in rapid mixing of the dry ingredients of the clay plaster with an aqueous solvent immediately prior to its application to or during application onto the substrate. Thus mixed clay plaster, before the clay grains soaking in and humidity homogenisation, is immediately applied onto the substrate prepared as for other mineral plasters, resulting in a good adhesion to the substrate after drying. Preferably, the clay plaster is applied onto the substrate after having applied a bonding layer in the form of clay slurry onto a dry substrate first. 1. A clay plaster comprising: clay in an amount of more than 40% by weight of content based on clay plaster dry matter , wherein the clay is in a powder form having grain size of up to 1.5 mm and granular form having grain size larger than 1.5 mm up to grain size not exceeding the thickness of layer of clay plaster which is to be applied to a substrate , whereby the amount of clay in ...

METHOD FOR MANUFACTURING SUBGRADE UTILITY VAULTS, LIDS AND TRENCHES USING RECYCLED POLYSTYRENE

Methods, compositions, and apparatuses are provided herein that utilize polystyrene from recycled products to make a high strength composite concrete that can be used for subgrade utility vaults, utility trenches, etc. Polystyrene is a widely-used plastic that can be collected and then densified at particular parameters including temperature to transform the polystyrene to a usable form. Then, the densified polystyrene is combined with other resin materials and dry materials to form a high-strength concrete material. The amount of densified polystyrene that is combined with the other materials is critical to control shrinkage and expansion of the concrete material during manufacturing. 1. A method of manufacturing high-strength concrete with recycled polystyrene , comprising:collecting polystyrene from recycled products;densifying said polystyrene at an elevated temperature between approximately 140° C. to 160° C. to melt said polystyrene and to increase a density of said polystyrene;mixing said densified polystyrene with a monomer material and at least one other resin material to form a resin component, wherein said densified polystyrene comprises between approximately 3% to 7% of a weight of said resin component; andmixing said resin component with a dry component to form a high-strength concrete.2. The method of claim 1 , wherein said elevated temperature is approximately 150° C.3. The method of claim 1 , wherein said densified polystyrene comprises approximately 5% of said weight of said resin component.4. The method of claim 1 , wherein said dry component comprises an aggregate material and a sand material claim 1 , and said aggregate material is between approximately 60% to 80% of a weight of said dry component.5. The method of claim 1 , wherein said dry component comprises an aggregate material and a sand material claim 1 , and said sand material is between approximately 20% to 40% of a weight of said dry component.6. The method of claim 1 , further ...

METHODS FOR PRODUCING CONCRETE HAVING IMPROVED CRACK RESISTANCE

Methods for forming concrete mixed having improved crack resistance are provided. According to one embodiment, the method may include providing a shrinkage reduction admixture. The method may also include providing a shrinkage compensating additive. The method may also include providing concrete solids. The method may further include mixing the shrinkage reduction admixture, the shrinkage compensating additive, and the concrete solids. 1. A method of forming concrete having improved the crack resistance , the method comprising:providing a shrinkage reduction admixture, including pre-combining the shrinkage reduction admixture with concrete mix water;providing a shrinkage compensating additive, including combining the shrinkage compensating additive with the pre-combined shrinkage reduction admixture and concrete mix water;providing concrete solids; andmixing the shrinkage reduction admixture, and the shrinkage compensating additive, being pre-combined with the concrete mix water, with the concrete solids.2. (canceled)3. The method of claim 1 , wherein pre-combining the shrinkage reduction admixture with the concrete mix water produces one or more of an aqueous solution claim 1 , a dispersion claim 1 , and a suspension.4. (canceled)5. The method of claim 1 , wherein providing the shrinkage compensating additive includes at least partially hydrating the shrinkage compensating additive with the concrete mix water.6. The method of claim 5 , wherein at least partially hydrating the shrinkage compensating additive comprises mixing the shrinkage compensating additive and the concrete mix water for between about 0 minutes to about 30 minutes.7. The method of claim 1 , wherein the shrinkage reduction admixture includes a surface tension reducing additive.8. The method of claim 6 , wherein the shrinkage reduction admixture comprises one or more of a glycol ether claim 6 , a polyglycol claim 6 , a polypropylene glycol claim 6 , a polyethylene glycol claim 6 , and a glycol ...

Thickener for hydraulic composition, one-component water-reducing agent, and preparation of hydraulic composition

The invention provides a thickener for hydraulic composition comprising (A) a water-soluble cellulose ether, (B) a defoamer, and (C) a gum. The thickener is combined with a hydraulic substance, an aggregate and water to form a hydraulic composition.

SYSTEM FOR PROVIDING BUILDING MATERIALS

A system provides building materials including a packaging, a lifting device and a mixing and conveying device. The packaging can be positioned by the lifting device via the mixing and conveying device in such a way that a total height of the system is less than 230 cm. 1. A system for providing building materials , the system comprising:a packaging with a first component arranged therein, wherein the packaging comprises a sleeve and a hanging device;a lifting device, wherein the packaging can be connected operatively, at the hanging device thereof, to the lifting device and moved through space by the lifting device;a second component; anda mixing and conveying device, in which the first component can be mixed with the second component and by means of which the building material can be conveyed;wherein the packaging with the first component can be positioned over the mixing and conveying device by the lifting device in such a way that a total height of the system is less than 230 cm.2. The system as claimed in claim 1 , wherein the first component is a dry product or a dry mixture claim 1 , and wherein the second component is a liquid product or a liquid mixture.3. The system as claimed in claim 2 , wherein the first component comprises cement claim 2 , and wherein the second component comprises water claim 2 , thus enabling mortar to be obtained as a mixed product.4. The system as claimed in claim 1 , wherein the lifting device comprises an inverted fork claim 1 , thus enabling the hanging device to be hung on a highest region of the fork.5. The system as claimed in claim 1 , wherein the lifting device is a forklift truck or a pallet truck.6. The system as claimed in having a packaging for use in the system claim 1 , wherein the sleeve has a standing surface claim 1 , lateral surfaces and a top surface claim 1 , and wherein an emptying device is formed in the standing surface claim 1 , and a filling device is formed in the top surface.7. A packaging for use in a ...

NOVEL MATERIAL AND PRODUCTION THEREOF FOR USE AS A STORAGE MEDIUM IN A SENSITIVE ENERGY STORAGE SYSTEM IN THE LOW-, MEDIUM- OR HIGH-TEMPERATURE RANGE

The present invention relates to a modified red mud/a modified bauxite residue and also to processes for the production thereof and to a storage medium comprising a modified red mud, to a heat storage means comprising a storage medium and to numerous uses of a modified red mud as storage medium, in particular in a heat storage means. The modified red mud contains the following components: haematite (FeO), —corundum (AlO), —rutile (TiO) and/or anatase (TiO), —quartz (SiO), —optionally perowskite (CaTiO) and —optionally pseudobrookite ((Fe,Fe)(Ti,Fe)O), nepheline ((Na,K)[AlSiO]) and/or hauynite ((Na,Ca)[AlSiO(SO)]), wherein the modified red mud is substantially free from NaO and/or glass. A novel material is thus provided, and the production thereof for use as a storage medium in a sensitive energy storage system in the low-, medium- or high-temperature range is described. 138-. (canceled)39. A modified red mud comprising:{'sub': 2', '3, 'haematite (FeO);'}{'sub': 2', '3, 'corundum (AlO);'}{'sub': 2', '2, 'rutile (TiO) and/or anatase (TiO);'}{'sub': '2', 'quartz (SiO); and'}{'sub': '2', 'less than 0.5% by weight of NaO and/or glass.'}40. The modified red mud of further comprising at least one of:{'sub': '3', 'perovskite (CaTiO);'}{'sup': 3+', '2+', '3+, 'sub': 2', '5, 'pseudobrookite ((Fe,Fe)(Ti,Fe)O);'}{'sub': '4', 'nepheline ((Na,K)[AlSiO]); and'}{'sub': 4-8', '6', '6', '24', '4, 'hauynite ((Na,Ca)[AlSiO(SO)]).'}41. The modified red mud of further comprising:{'sub': 2', '3, '48 to 55% by weight of haematite (FeO);'}{'sub': 2', '3, '13 to 18% by weight of corundum (AlO);'}{'sub': 2', '2, '8 to 12% by weight of rutile (TiO) and/or anatase (TiO);'}{'sub': '2', '2 to 5% by weight of quartz (SiO); and'}{'sub': '2', 'less than 0.03% by weight of NaO and/or less than 0.1% by weight of glass.'}42. The modified red mud of claim 39 , wherein the modified red mud contains less than 0.5% by weight of aluminium titanate (AlTiO) claim 39 , iron (Fe) claim 39 , mayenite (CaAlO) ...

PARTICULATE COMPOSITIONS FOR THE FORMATION OF GEOPOLYMERS, THEIR USE AND METHODS FOR FORMING GEOPOLYMERS THEREWITH, AND GEOPOLYMERS OBTAINED THEREFROM

The present invention relates to dry particulate composition for forming a geopolymer, comprising an alkali metal hydroxide, an alkali metal silicate, and an aluminosilicate. The invention further relates to methods for forming geopolymers and geopolymers formed according to said methods or using the said dry particulate compositions. 2. A dry particulate composition according to claim 1 , wherein at least 50 wt.-% of the aluminosilicate is in an amorphous state.3. A dry particulate composition according to claim 1 , comprising from 1 wt.-% to 25 wt.-% alkali metal hydroxide claim 1 , from 15 wt.-% to 50 wt.-% alkali metal silicate claim 1 , and from 30 wt.-% to 80 wt-% aluminosilicate claim 1 , expressed as a proportion of the total weight of the dry particulate composition.4. A dry particulate composition according to claim 1 , wherein the said alkali metal hydroxide is selected from the group consisting of NaOH claim 1 , KOH claim 1 , LiOH claim 1 , RbOH claim 1 , CsQH claim 1 , and mixtures thereof.5. A dry particulate composition according to claim 1 , wherein the alkali metal of the said alkali metal silicate is selected from the group consisting of Na claim 1 , K claim 1 , Li claim 1 , Rb claim 1 , Cs claim 1 , and mixtures thereof.6. A dry particulate composition according to claim 1 , wherein said aluminosilicate is selected from the group consisting of metakaolin claim 1 , fly ash claim 1 , halloysite claim 1 , metahalloysite claim 1 , slag claim 1 , rock dust claim 1 , fine sand claim 1 , activated clay claim 1 , kaolin claim 1 , mica claim 1 , fine feldspar and mixtures thereof.7. A dry particulate composition according to claim 1 , wherein at least 50 wt.-% of said aluminosilicate is in an amorphous state claim 1 , based on the total weight of aluminosilicate in the composition and said aluminosilicate has a product of the specific surface area in m/g and the amorphous phase content in the range from 5 to 15.8. A dry particulate composition according to ...

Production of foundry premix composition

A method of preparing a unique foundry premix composition that has a low bulk density of 30-45 lbs/ft 3 and contains fine particles with an average particle size of 85-100 μm is described. The unique foundry premix composition is produced by using specially designed assemblies of mechanical equipment with improved efficiency so that the premix can be prepared at a site closer to a foundry. As a result, increase in premix density caused by handling and shipping across a long distance from a traditional premix manufacturing facility to a foundry can be suppressed; transportation cost can be saved; and safety would be of less concern. The use of the foundry premix composition to prepare a sand molding medium for casting molded articles is also described.

ACCELERATOR POWDER AND QUICK-SETTING BINDER COMPOSITION

An accelerator powder for cement and also rapid-setting binder compositions which contain the accelerator powder and the use in mortar or concrete. The accelerator powder includes from 10 to 99.7% by weight of a water-insoluble mineral powder P and from 0.3 to 90% by weight of at least one compound V selected from the group consisting of alkali metal halides and alkaline earth metal halides, alkali metal nitrates and alkaline earth metal nitrates, alkali metal nitrites and alkaline earth metal nitrites, alkali metal thiocyanates and alkaline earth metal thiocyanates and hydroxyalkylamines or salts thereof, and mixtures thereof. 1. An accelerator powder for cement , comprisingfrom 10 to 99.7% by weight of a water-insoluble mineral powder P andfrom 0.3 to 90% by weight of at least one compound V selected from the group consisting of alkali metal halides and alkaline earth metal halides, alkali metal nitrates and alkaline earth metal nitrates, alkali metal nitrites and alkaline earth metal nitrites, alkali metal thiocyanates and alkaline earth metal thiocyanates and hydroxyalkylamines or salts thereof, and mixtures thereof.2. The accelerator powder as claimed in claim 1 , wherein the mineral powder P is selected from the group consisting of calcium carbonate claim 1 , dolomite claim 1 , metakaolin and quartz flour.3. The accelerator powder as claimed in claim 1 , wherein the mineral powder P has an average particle size D50 of from 1 to 150 μm.4. The accelerator powder as claimed in claim 1 , wherein the compound V comprises at least one hydroxyalkylamine.5. The accelerator powder as claimed in claim 1 , wherein the hydroxylalkylamine has been partially or completely neutralized with an inorganic or organic acid.6. The accelerator powder as claimed in claim 1 , wherein it comprises at least two different compounds V selected from the group consisting of alkali metal halides and alkaline earth metal halides claim 1 , alkali metal nitrates and alkaline earth metal ...

MODIFICATION OF PROPERTIES OF POZZOLANIC MATERIALS THROUGH BLENDING

Methods for producing a blended pozzolan having one or more characteristics, such as one or more chemical and/or physical characteristic, in an established amount or range from two or more different pozzolans. Two or more pozzolans having different chemical and/or physical characteristics can be blended together and a chemical analyzer used to determine a chemical and/or physical characteristic of the blended pozzolan. Upon determining that the chemical and/or physical characteristic of the blended pozzolan is outside the established amount or range, modifying a blending ratio of the two or more pozzolans to restore the chemical and/or physical characteristic to the established amount or range. 1. A method for manufacturing a blended pozzolan having a characteristic in an established amount or range prior to blending with cement , comprising:blending two or more pozzolans that differ in a characteristic selected from the group consisting of calcium oxide content, alumina content, silica content, ratio of alumina to silica, amorphous mineral content, crystalline mineral content, iron oxide content, magnesium oxide content, alkali metal content, sulfate content, particle size distribution, specific gravity, and combinations thereof to form the blended pozzolan;measuring the characteristic of the blended pozzolan and determining whether the characteristic is in the established amount or range; andupon determining that the characteristic of the blended pozzolan is outside the established amount or range, modifying a blending ratio of the two or more pozzolans to restore the characteristic of the blended pozzolan to the established amount or range.2. The method of claim 1 , wherein the two or more pozzolans are selected from the group consisting of coal ash claim 1 , fly ash claim 1 , bottom ash claim 1 , municipal waste ash claim 1 , biomass ash claim 1 , ground granulated blast furnace slag (GGBFS) claim 1 , steel slag claim 1 , natural pozzolan claim 1 , volcanic ash ...

METHOD FOR PRODUCING A DISPERSANT

The invention relates to a method for producing a dispersant, comprising the steps of a) providing at least one water-soluble polymer comprising polyether groups, b) providing an inorganic component comprising at least one phyllosilicate which has an integral sheet charge of 0, 1 or 2, c) producing an aqueous suspension comprising the at least one water-soluble polymer comprising polyether groups and the inorganic component comprising the at least one phyllosilicate, and d) spray-drying the aqueous suspension to give a solid. Additionally disclosed is the use of the dispersant of the invention in an inorganic binder composition. 1. A method for producing a dispersant , comprising the steps ofa) providing at least one water-soluble polymer comprising polyether groups,b) providing an inorganic component, comprising at least one phyllosilicate which has an integral sheet charge of 0, 1 or 2,c) preparing an aqueous suspension comprising the at least one water-soluble polymer comprising polyether groups and the inorganic component comprising the at least one phyllosilicate,d) spray-drying the aqueous suspension to give a solid.2. The method according to claim 1 , wherein the polyether groups of the at least one water-soluble polymer are polyether groups of the structural unit (I) claim 1 ,{'br': None, 'sub': k', 'n, '*—U—(C(O))—X—(AlkO)—W \u2003\u2003(I)'}where* indicates the bonding site to the polymer,U is a chemical bond or an alkylene group having 1 to 8 carbon atoms,{'sup': '1', 'X is oxygen, sulfur or a group NR,'}k is 0 or 1,n is an integer whose average value based on the polymer is in the range from 3 to 300,{'sub': 2', '4', 'n, 'Alk is C-Calkylene, it being possible for Alk to be identical or different within the group (Alk-O),'}{'sub': 1', '8, 'W is a hydrogen, a C-Calkyl or an aryl radical or is the group Y-F, where'}Y is a linear or branched alkylene group having 2 to 8 carbon atoms and may carry a phenyl ring,{'sup': '2', 'F is a 5- to 10-membered nitrogen ...

MODIFIED CELLULOSE ETHER WITH IMPROVED WORKABILITY FOR USE IN GYPSUM SMOOTHING MORTAR AND JOINT FILLER APPLICATIONS

The present invention provides additives for dry mix or tape joint compound compositions comprising one or more cellulose ether powders containing on its surface a polymeric additive chosen from polymeric colloidal stabilizers, polymeric fluidizers and combinations thereof. The additive is formed by methods of kneading at from 50 to 120° C. a wet cellulose ether mixture containing from 60 to 80 wt. % of water with from 0.1 to 10 wt. %, based on total cellulose ether solids, of a polymeric additive chosen from polymeric colloidal stabilizers, and polymeric fluidizers, and combinations thereof to form the additive; drying and grinding the additive; and, combining the additive with 0.1 to 20 wt. %, based on total cellulose ether solids, of a dry polyacrylamide. 1. A method for making compositions for use as gypsum dry mix or gypsum tape joint compound additives comprise kneading at elevated temperature of from 50 to 120° C. a wet cellulose ether mixture containing from 60 to 80 wt. % of water , one or more cellulose ether , and from 0.1 to 10 wt. % , based on total cellulose ether solids , of a polymeric additive chosen from polymeric colloidal stabilizers , polymeric fluidizers , and combinations thereof to form an additive; drying and grinding the additive; and , then combining the additive with 0.1 to 20 wt. % , based on total cellulose ether solids , of one or more dry polyacrylamide.2. The method as claimed in claim 1 , wherein the kneading device comprises an extruder claim 1 , a kneader claim 1 , a banbury mixer; a high shear mixer claim 1 , or a homogenizer.3. The method as claimed in claim 1 , wherein the cellulose ether is hydroxyethyl methyl cellulose.4. The method as claimed in claim 1 , wherein the amount of polymeric additive ranges from 0.2 to 5 wt. % claim 1 , based on total cellulose ether solids.5. The method as claimed in claim 1 , wherein the polymeric additive is a polymeric colloidal stabilizer which is a polyvinyl alcohol.6. The method as claimed ...

MORTAR AND METHOD FOR PRODUCING THE SAME

Mortar with small autogenous shrinkage strain and a method for producing the same are provided. 1. Mortar comprising binder and fine aggregate , wherein the binder includes cement and fine mineral powder , and the mortar is formed by being mixed with water ,wherein the fine aggregate is air granulated ferronickel slag, and weight ratio of water to a combination of the binder and the fine aggregate is 7.0% or more and 9.0% or less.2. The mortar according to claim 1 , wherein a water absorption rate of the fine aggregate is 1.5% or more and 3.5% or less claim 1 , and equilibrium moisture content is 0.10% or more and 0.30% or less.3. A method for producing mortar comprising the step of mixing binder claim 1 , fine aggregate and water claim 1 , wherein the binder includes cement and fine mineral powder claim 1 ,wherein the fine aggregate is air granulated ferronickel slag, and weight ratio of water to a combination of the binder and the fine aggregate is 7.0% or more and 9.0% or less. The present invention relates to mortar and a method for producing the same.This application is based on, and claims priority from, JP 2018-001922, filed on Jan. 10, 2018, the disclosure of which is hereby incorporated by reference herein in its entirety.In mortar, the desired goal is to limit autogenous shrinkage strain in order to prevent cracks. Patent Document 1 discloses that mortar with small autogenous shrinkage strain can be obtained by setting the porosity of fine aggregate at 16% or more.Patent Document 1: JP 2016-185888Patent Document 1 describes mortar whose properties are excellent for limiting the autogenous shrinkage strain, but it is necessary to further limit the autogenous shrinkage strain depending on the application.The present invention aims at providing mortar with small autogenous shrinkage strain and a method for producing the same.Mortar of the present invention comprises binder and fine aggregate, wherein the binder includes cement and fine mineral powder, and the ...

Advanced multi-functional asbestos free thermal insulating material and the process for preparation thereof

The present invention relates to advanced multi-functional asbestos-free thermal insulating materials utilizing appropriate matrixes comprising nano thermal insulating precursor powder predominantly comprising calcium silicate and calcium magnesium silicate prepared from marble waste powder, rice husk and calcium hexametaphosphate; crushed silica fiberglass and a supporting matrix.

METHOD FOR PRODUCING A CALCIUM SILICATE HYDRATE-COMPRISING HARDENING ACCELERATOR IN POWDER FORM

The invention relates to a method for producing a calcium silicate hydrate-comprising hardening accelerator in powder form, which comprises the steps of 1. A method for producing a calcium silicate hydrate-comprising hardening accelerator in powder form , which comprises the steps of(a) providing an aqueous suspension comprising calcium silicate hydrate;(b) mixing at least one calcium compound, selected from calcium acetate, calcium formate, calcium hydroxide, calcium oxide, and mixtures of two or more of said compounds, with the aqueous suspension comprising calcium silicate hydrate; and(c) drying the resulting mixture.2. The method according to claim 1 , wherein the suspension comprising calcium silicate hydrate is obtained by reacting an aqueous solution or suspension of a calcium source with an aqueous solution or suspension of a silicate source in the presence of at least one polymeric dispersant which comprises structural units having anionic or anionogenic groups and structural units having polyether side chains.3. The method according to claim 1 , wherein the calcium compound is selected from calcium hydroxide claim 1 , calcium oxide claim 1 , and mixtures thereof.4. The method according to claim 1 , wherein the calcium compound in an amount of 0.5 to 150 wt % based on the solids content of the calcium silicate hydrate-comprising suspension from step (a) claim 1 , is mixed with the calcium silicate hydrate-comprising suspension from step (a).5. The method according to claim 1 , wherein the drying is accomplished by spray drying or roll drying.6. A calcium silicate hydrate-comprising hardening accelerator in powder form claim 1 , obtained by the method according to .7. A building material mixture which comprises the calcium silicate hydrate-comprising hardening accelerator in powder form according to claim 6 , and a hydraulic and/or latent hydraulic binder.8. A process comprising mixing the calcium silicate hydrate-comprising hardening accelerator in powder ...

Settable Compositions Comprising Wollastonite and Pumice and Methods of Use

Methods and compositions are provided that relate to cementing operations, including a method of cementing that may comprise providing a settable composition that may comprise wollastonite, pumice, a calcium-ion source, and water, wherein the wollastonite may be present in an amount in a range of from about 25% to about 75% by combined weight of the wollastonite and pumice, and wherein the pumice may present in an amount in a range of from about 25% to about 75% by combined weight of the wollastonite and pumice. Embodiments of the method further may comprise allowing the settable composition to set.

DRY CONSTRUCTION COMPOSITION WHICH CAN BE WET-SPRAYED BY MEANS OF SCREW PUMP AND COMPRISING A BINDER AND A BIO-BASED FILLER - PREPARATION AND USES OF SUCH A COMPOSITION

A dry construction composition that is easily wet-sprayed by a screw pump to form an insulating and mechanically resistant material after hardening comprises: at least one binder that includes at least one primary binder comprising lime and/or at least one source of alumina and/or at least one source of calcium sulfate, at least one water retention agent, and preferably at least one surfactant; and at least one plant-based bio-based filler based on sunflower stalk and/or corn stalk and/or rape stalk, having a Bulk Density (BD) in kg/mthat is less than 110. The ratio of the binder to the filler is between 2 and 9 in liters/kg. The composition can be mixed with water in a ratio of water/binder that is greater than or equal to 0.8 to form a wet composition. The wet composition can be sprayed onto a horizontal or vertical substrate or molded to a desired shape. 1. Dry mortar composition that can be wet sprayed , in particular by means of a screw pump , enabling the creation of an insulating mortar , characterized in that: [ -A- least one primary binder comprising lime and/or at least one source of alumina and/or at least one source of calcium sulfate, preferably at least one source of alumina;', '-A2- at least one water retention agent;', '-A3- preferably at least one surfactant;, '-A- at least one binder which itself comprises, {'sup': '3', '-B- at least one bio-based filler based on sunflower stalk and/or corn stalk and/or rape stalk, having a Bulk Density (BD) in kg/mthat is less than 110, preferably between 10 and 80;'}, 'the ratio B/A—volume of dry filler B in liters/mass of dry binder A in kg—preferably being between—in increasing order of preference—2 and 9; 2.5 and 8; 4 and 7.9; 4.6 and 7.5 L/kg;, '(i) it comprises(ii) it is intended to be mixed with a liquid, preferably water, in a mass ratio of water to A comprised between 0.8 and 5, preferably between 1 and 4, and more preferably between 1.5 and 3.5;(iii) once mixed in this manner, it is pumpable in a screw ...

STABILIZED REFRACTORY COMPOSITIONS

A refractory composition including refractory aggregate, one or more matrix components, and silicate-coated set accelerator particles. The silicate-coated set accelerator particles can include one more of silicate-coated calcium hydroxide, magnesium hydroxide, calcium chloride, calcium carbonate, magnesium carbonate and calcium sulfate. Suitable silicate coatings include sodium silicate, potassium silicate, lithium silicate and mixtures thereof. A method of recovering an aged refractory composition, a settable composition and a method of manufacturing silicate-coated calcium hydroxide particles are also provided. 1. A refractory composition comprising:(a) refractory aggregate;(b) one or more matrix components; and(c) silicate-coated set accelerator particles.2. The refractory composition of claim 1 , wherein said silicate-coated set accelerator particles comprise silicate-coated particles of one or more of Ca(OH) claim 1 , magnesium hydroxide claim 1 , calcium chloride claim 1 , calcium carbonate claim 1 , magnesium carbonate claim 1 , lithium carbonate or calcium sulfate.3. The refractory composition of claim 1 , wherein said silicate coating is chosen from the group consisting of sodium silicate claim 1 , potassium silicate claim 1 , lithium silicate and mixtures thereof.4. The refractory composition of claim 2 , wherein said silicate coating is chosen from the group consisting of sodium silicate claim 2 , potassium silicate claim 2 , lithium silicate and mixtures thereof.5. The refractory composition of claim 2 , wherein said silicate-coated set accelerator particles comprise silicate-coated Ca(OH)particles claim 2 , wherein said silicate coating is chosen from the group consisting of sodium silicate claim 2 , potassium silicate claim 2 , lithium silicate and mixtures thereof.6. The refractory composition of claim 5 , wherein said silicate-coated set accelerator particles comprise sodium silicate-coated Ca(OH)particles.7. The refractory composition of any one of ...

An Apparatus, Composition and Method for Recycling a Material

An apparatus, composition and method for recycling of a material, such as, for example, unhardened concrete. The apparatus includes a storage tank for storing a recycling composition to be applied to the material to be recycled and a control unit configured to control release of the recycling composition from the storage tank. 1. An apparatus for assisting with recycling of a material , the apparatus including:a storage tank for storing a recycling composition to be applied to the material to be recycled; anda control unit configured to control release of the recycling composition from the storage tank.2. The apparatus as claimed in claim 1 , wherein the control unit is configured to control release of the recycling composition based on data received related to the material to be recycled.3. The apparatus as claim in claim 2 , wherein data related to the material to be recycled includes data related to the quantity claim 2 , quality and/or composition of the material to be recycled.4. The apparatus as claimed in claim 3 , further including at least one sensor claim 3 , the at least one sensor for detecting at least one parameter related to the quantity of recycling composition in the storage tank.5. The apparatus as claimed in claim 4 , wherein the control unit is configured to control release of the recycling composition by comparing data received from the at least one sensor related to the quantity of recycling composition in the storage tank with a dispensation quantity calculated based on data received related to the material to be recycled.6. The apparatus as claimed in claim 1 , further including an ejection system for propelling recycling composition released from the storage tank along a delivery line to an outlet nozzle.7. The apparatus as claimed in claim 6 , wherein the ejection system is a pneumatic ejection system.8. The apparatus as claimed in claim 6 , wherein the ejection system is controlled by the control unit.9. The apparatus as claimed in claim 6 ...

3d printable cementitious ink including electromagnetic pulse resistant binders

An electromagnetic interference (EMI) resistant cementitious ink comprising a hydraulic cement, calcium carbonate, silica sand, taconite material, and a conductive material. A ratio of the silica sand to the taconite material is 1:1. In some embodiments, the taconite material includes taconite powder and fine taconite aggregate having a ratio of 1:1. In some embodiments, the conductive material includes carbon-based nanoparticles in solution. In further embodiments, the EMI-resistant cementitious ink has a shielding effectiveness in accordance with ASTM D4935-18 of at least 4.0 dB.

CEMENT FORMULATIONS AND METHODS

Disclosed are improved compositions, systems, methods and techniques for processing and preparing cement, cement constituents and concrete formulations involving natural pozzolans. In various embodiments, the water demand, compressive strength, set times and workability in concrete incorporating certain natural pozzolans can be improved by blending with calcium carbonate powders, while further improvements can be accomplished if the calcium carbonate is inter-ground with the natural pozzolan to a desired and/or minimum fineness. This addition of calcium carbonate, fly ash, ground granulated blast furnace slag, ground glass and various acids to a natural pozzolan can desirably reduce water requirements and improve the physical performance characteristics of the natural pozzolan and the overall characteristics of the concrete. Various applications may allow for (1) extension of limited fly ash supplies in certain regions, (2) greater replacement of costly Portland cement, and/or (3) significant reductions of greenhouse gases resulting from Portland cement manufacture. 1. A pozzolanic composition for use in concrete and mortar , the composition comprising a natural pozzolan in concentration of 1 wt % to about 99 wt % and a calcium carbonate source inter-ground in an attrition-type mill to a fineness such that a median particle size D50 is equal or less than 25 microns.2. The pozzolanic composition of claim 1 , wherein the inter-ground combination of the natural pozzolan and calcium carbonate source have significantly lower water requirements in concrete as compared to the natural pozzolan by itself.3. The pozzolanic composition of claim 1 , wherein a weight ratio of said natural pozzolan is in a concentration of about 50 wt % to 90 wt %.4. The pozzolanic composition of claim 1 , wherein said natural pozzolan is a volcanic ash and/or diatomaceous earth with pozzolanic properties.5. The pozzolanic composition of claim 1 , wherein the natural pozzolan comprises LASSENITE ...

A PROCESS FOR MODIFYING POLYMER PARTICLES OF AN AQUEOUS POLYMER DISPERSION, AN AQUEOUS POLYMER DISPERSION OBTAINABLE BY SAID PROCESS, A REDISPERSIBLE POLYMER POWDER, AND A COMPOSITION COMPRISING THE REDISPERSIBLE POLYMER POWDER

The invention relates to a process for modifying polymer particles of an aqueous polymer dispersion in which positively or negatively charged polymer particles are provided with an inorganic salt shell. The inorganic shell leads to an improved drying ability and storage stability of the latex and improves the storage stability of the resulting polymer powder. The obtained polymer powder exhibits an improved viscosity and faster skin-forming time in the final application and is therefore particularly useful in a building material composition. 1: A process for modifying polymer particles of an aqueous polymer dispersion , the process comprising:a) providing an aqueous polymer dispersion comprising positively or negatively charged polymer particles;b) adding at least one first water-soluble salt of a multivalent metal selected from the group consisting of magnesium, calcium, barium, aluminum, zirconium, iron and zinc, wherein the first salt essentially does not comprise an anion as defined in c);c) adding at least one second water-soluble salt comprising an anion selected from the group consisting of aluminate, silicate, borate, sulfate, and carbonate, wherein the second salt essentially does not comprise a cation as defined in b);wherein the sequence of a), b) and c) is in the order a), b), c) in the case of negatively charged polymer particles, or a), c), b) in the case of positively charged polymer particles.2: The process of claim 1 , wherein the polymer particles in a) have a particle size of ≤2.0 μm claim 1 , as determined by dynamic light scattering.3: The process of claim 1 , further comprisingd) adjusting the pH-value of the obtained aqueous dispersion to a value within a range of 9 to 13.4: The process of claim 1 , wherein a surface charge is in the range of from −300 to −30 μmol/g polymer or from 30 to 300 μmol/g polymer.5: The process of claim 1 , wherein the cation of b) is calcium and the anion of c) is aluminate or silicate.6: The process of claim 3 , ...

Method and composition for stabilization of drill cuttings

A method and composition for stabilizing drill cuttings commences by providing precipitated calcium carbonate (PCC). The PCC is dried to a moisture level of about 10% or less. Drying by heat not to exceed 400° F. is preferred to prevent changes in the PCC. The dried PCC is blended with kiln dust to compose a generally uniform admixture. In the admixture, the kiln dust is not to exceed 40%. The admixture is introduced to the drill cuttings to initiate a nucleation reaction within the commixture of drill cuttings and the admixture.

Rapid curing mineral binder mixture

A fast-curing mineral binder mixture includes a zirconium(IV)-based accelerator, a cement which includes at least one component selected from the compounds 3CaO*Al 2 O 3 , 12CaO*7Al 2 O 3 , CaO*Al 2 O 3 , CaO*2Al 2 O 3 , CaO*6Al 2 O 3 and 4CaO*3Al 2 O 3 *SO 3 , and 15 to 80 wt % of a sulfate carrier, wherein the wt % is based on a weight of the fast-curing mineral binder mixture. The fast-curing mineral binder mixture can optionally include at least one alkaline component and/or at least one additive.

RAPID-HARDENING MINERAL BINDER MIXTURE

A fast-curing mineral binder mixture includes a titanium(IV)-based accelerator, a cement which includes at least one component which is selected from the compounds 3CaO*AlO, 12CaO*7AlO, CaO*AlO, CaO*2AlO, CaO*6AlOand 4CaO*3AlO*SO, and 15 to 80 wt % of a sulfate carrier, wherein the wt % is based on a weight of the fast-curing mineral binder mixture. The fast-curing mineral binder mixture can optionally include at least one alkaline component and/or at least one additive. 118-. (canceled)19. A fast-curing mineral binder mixture comprising:a titanium(IV)-based accelerator;{'sub': 2', '3', '2', '3', '2', '3', '2', '3', '2', '3', '2', '3', '3, 'a cement comprising at least one component selected from the compounds 3CaO AlO, 12CaO*7AlO, CaO*AlO, CaO*2AlO, CaO*6AlOand 4CaO*3AlO*SO; and'}15 to 80 wt % of a sulfate carrier,wherein,the wt % is based on a weight of the fast-curing mineral binder mixture.20. The fast-curing mineral binder mixture as recited in claim 19 , further comprising:at least one alkaline component; andat least one additive.21. The fast-curing mineral binder mixture as recited in claim 20 , wherein the at least one alkaline component is at least one of a portland cement claim 20 , an alkali metal oxide claim 20 , an alkaline earth metal oxide claim 20 , an alkali metal hydroxide claim 20 , an alkaline earth metal hydroxide claim 20 , and mixtures thereof.22. The fast-curing mineral binder mixture as recited in claim 20 , wherein the at least one additive is at least one of a retarder claim 20 , a setting accelerator claim 20 , a dispersible plastics powder claim 20 , a defoamer claim 20 , a water repellent claim 20 , an air entrainer claim 20 , a plasticizer claim 20 , a stabilizer claim 20 , a water retention agent and an additive which influences a building material mixture rheology.23. The fast-curing mineral binder mixture as recited in claim 20 , wherein the mineral binder mixture comprises:5 to 80 wt % of the cement;0.001 to 15 wt % of the titanium ...

Dry Mix and Concrete Composition Containing Bed Ash and Related Methods

Embodiments of a dry mix for producing a concrete composition are provided. The dry mix includes aggregate, cement, and bed ash. The bed ash contains the combustion product of a fluidized bed coal combustion reaction. Additionally, embodiments of a method of preparing the dry mix and embodiments of a method of preparing a concrete composition are provided. The dry mix is also suitable for repairing soil slips, and embodiments of a method of repairing a soil slip are also provided. 1. A dry mix , comprising:aggregate;cement; andbed ash;wherein the bed ash comprises a combustion product of a fluidized bed coal combustion reaction.2. The dry mix of claim 1 , wherein the ratio of bed ash to cement is from 3:1 to 5:1.3. The dry mix of claim 1 , wherein the ratio of bed ash to cement is 4:1.4. The dry mix of claim 1 , wherein the cement and the bed ash are premixed such that the cement coats the bed ash.5. The dry mix of claim 1 , comprising:from 35% to 75% by weight aggregate;from 30% to 50% by weight bed ash; andfrom 5% to 15% by weight cement.6. The dry mix of claim 1 , comprising:about 50% by weight aggregate;about 40% by weight bed ash; andabout 10% by weight cement.7. The dry mix of claim 1 , wherein the aggregate is 2″×3″ rock.8. The dry mix of claim 1 , wherein the aggregate is limestone.9. The dry mix of claim 1 , wherein the fluidized bed coal combustion reaction involves high-sulfur coal.10. The dry mix of claim 9 , wherein the combustion product has been post treated with quicklime.11. The dry mix of claim 1 , further comprising fluorite.12. The dry mix of claim 1 , wherein the bed ash meets the requirements of the EPA Class 1 water quality standards claim 1 , as tested according to ASTM D3987-85.13. The dry mix of claim 1 , wherein the cement includes at least one of type I cement claim 1 , type II cement claim 1 , type III cement claim 1 , or calcium sulfoaluminate cement.14. A method of preparing a dry mix claim 1 , comprising the steps of:providing bed ash ...

GEOSYNTHSESIS BINDER COMPRISING A CALCIUM- ALKALINE ACTIVATOR AND A SILICO-ALUMINOUS COMPOUND

The geosynthetic binder dry composition includes at least: an alkalino-calcium type activator including at least lime and an alkaline salt, which can suitably react together so as to form in situ a base in the presence of water, and a silico-aluminous compound, including an amount of calcium oxide higher than or equal to 15%, by weight, as compared to the silico-aluminous compound total weight, characterized in that the binder dry composition includes, by weight, as compared to the total weight, from 45 to 95% of the silico-aluminous compound, from 2 to 25% of lime and from 3 to 30% of an alkaline salt. The material including the geosynthetic binder dry composition and water, a method for producing the geosynthetic binder dry composition, and a method for producing the material are also described.

MANUFACTURED NATURAL POZZOLAN, IMPROVED MANUFACTURED NATURAL POZZOLAN-BASED CEMENT AND METHOD OF MAKING AND USING SAME

The present invention comprises a product. The product comprises a first mineral in particulate form and having a first pozzolanic reactivity and a second mineral in particulate form and having a second pozzolanic reactivity greater than the first reactivity, wherein the surface of at least some of the particles of the first mineral is at least partially covered with particles of the second mineral. A method of making the composition of the present invention is also disclosed.

HIGH PERFORMANCE HYBRID FLY ASH/CALCIUM ALUMINATE CEMENTITIOUS COMPOSITIONS FOR MORTARS AND CONCRETES

A high performance concrete composition comprising: (i) at least one Class C fly ash, (ii) at least one calcium aluminate cement, (iii) at least one aggregate, and (iv) water.

ADVANCED CEMENT FREE COMPOSITION FOR CONCRETE AND PANELS AND METHOD OF PREPARATION THEREOF

The present invention relates to advanced cement free composition for concrete and panels useful in construction industry and the method of preparation thereof. Particularly the present invention relates to advanced cement free composition constituting Sea sand, Fly Ash, Seawater, NaOH and NaSiO(sodium meta silicate). More particularly the present invention relates to advanced cement free composition for concrete and panels with comprehensive strength of 15 to 30 MPa and flexural strength of 1.5-3.0 MPa. 1. A cement free composition useful for preparation of concrete cubes and panels comprising; 40-50 w % sea sand; 15-20 w % sea water; 8-12 w % Sodium hydroxide; 4-10 w % Sodium meta silicate and 15-21 w % Fly ash.2. A method of preparation of advanced cement free composition for concrete and panels as claimed in claim 1 , comprising the steps of:a) mixing sea sand in the range of 40-50 w % , fly ash in the range of 15-21 w % , sodium hydroxide in the range of 8-12 w % and sodium meta silicate in the range of 4-10 w % to obtain a mixture;b) dry grinding the mixture as obtained in step (a) for a period in the range of 20-24 hours and adding sea water in the range of 15-20w % to obtain an advanced cement free composition.360. The cement free composition as claimed in claim 1 , wherein the concrete cubes prepared from said composition having dimensions of 15 cm×15 cm×15 cm and cured at temperature of 28° C. for the duration of 3-28 days and further heat cured at the temperature in the range of 50-° C. for a duration in the range of 24-72 hours.4. The advanced cement free composition as claimed in claim 1 , wherein the reinforced panels prepared from the said composition having dimensions of 1 feet×1 feet×20 mm and 2 feet×2 feet20 mm by using wire mesh of 1 feet ×1 feet×2 mm and 2 feet×2 feet×2 mm at a compacting pressure in the range of 10-50 kg/cm claim 1 , and are heat cured at the temperature in the range of 40 to 80° C. for a duration of 24 to 72 hours.5. The cement ...

COMPOSITION CONTAINING MODIFIED CHROMATE-DEFICIENT RED MUD AND METHOD FOR PRODUCING SAME

The invention relates to a composition which contains modified chromate-deficient red mud, comprising a mineral composition of—10 to 50 wt. % of iron compounds,—12 to 35 wt. % of aluminum compounds,—5 to 17 wt. % of silicon compounds,—2 to 10 wt. % of titanium dioxide,—0.5 to 6 wt. % of calcium compounds,—0 to 1 ppm of chromium (VI) compounds, and—optionally additional unavoidable impurities. The composition, in particular the modified chromate-deficient red mud, contains a poorly soluble reducing agent for Cr(VI). In this manner, an inexpensive chemical composition is provided in particular as an iteratively functioning long-term adsorbent for pollutants in liquid, gaseous, and solid milieu. The invention further relates to a method for producing same and to uses thereof. 1. A composition , comprising modified , chromate-deficient red mud with a mineral composition of10 to 50% by weight of iron compounds,12 to 35% by weight of aluminium compounds,5 to 17% by weight of silicon compounds,2 to 10% by weight of titanium dioxide,0.5 to 6% by weight of calcium compounds, and0 to 1 ppm of chromium (VI) compounds,wherein the modified, chromate-deficient red mud comprises a poorly soluble reducing agent for Cr(VI),wherein the composition further comprises a pH buffer system which is configured for stabilising a pH range in which the poorly soluble reducing agent for Cr(VI) and the resulting Cr(III) has a solubility in water at 25° C. of less than 1 g/l.2. The composition according to claim 1 , wherein the poorly soluble reducing agent for Cr(VI) has a solubility in water at pH 7 and 25° C. of less than 1 g/l.3. The composition according to claim 1 , wherein the poorly soluble reducing agent for Cr(VI) comprises a poorly soluble Fe(ll) compound.4. The composition according to claim 1 , wherein the poorly soluble reducing agent for Cr(VI) comprises iron(ll) carbonate (FeCO).5. The composition according to claim 1 , wherein a combination of readily soluble and poorly soluble ...

Seawater resistant grout material composition and method for constructing offshore wind turbine structure using same

The present invention provides a seawater resistant grout material composition and a method for constructing an offshore wind turbine structure using the same, the seawater resistant grout material composition comprising: 2˜10 wt % of high strength admixture; 25˜35 wt % of type I Portland cement; 30˜45 wt % of silica sand having a particle size of 30˜60 mesh; 5˜15 wt % of silica sand having a particle size of 60˜100 mesh; and 5˜10 wt % of silica sand having a particle size of 100˜200 mesh, wherein the high strength admixture is obtained by mixing and pulverizing 45˜99 wt % of slag and 1˜55 wt % of anhydrite, thus the present invention has excellent seawater resistance, excellent strength development characteristics at a low temperature, and increased compressive strength and durability to allow withstanding cyclic loads due to wind and wave pressure.

Hardening accelerator composition containing dispersants

A process for the preparation of a hardening accelerator composition by reaction of a water-soluble calcium compound with a water-soluble silicate compound, said reaction being effected in the present of a water-soluble dispersant having at least one polyalkyleneglycol structural unit with a functional group at one end of the polyalkyleneglycol, being able to interact as an anchor group with the surface of cement particles, the hardening accelerator composition and its use.

TWO COMPONENT REPAIR MATERIAL

A two-component repair material comprising or consisting a first component A comprising a hydraulic binder, and aggregate, and a second component B comprising an aqueous emulsion of bitumen and at least one synthetic polymer. Especially, the repair material is for repair of asphalt-based construction materials. 1. A two-component repair material comprising a first component A and a second component B , a) 7-100 w % of a hydraulic binder based on the total weight of the first component A, and', 'b) 0-93 w % of aggregates based on the total weight of the first component A, and, 'the first component A comprising d) an aqueous emulsion of bitumen, and', 'e) at least one synthetic polymer in an amount of greater than 0 and lower than about 30 w % based on the total weight of the second component B., 'the second component B comprising2. The two-component repair material of claim 1 , wherein the hydraulic binder is selected from Portland cement claim 1 , aluminate cement claim 1 , calcium sulfoaluminate cement claim 1 , a source of calcium sulfate claim 1 , natural hydraulic lime claim 1 , slag claim 1 , pozzolanes claim 1 , and mixtures thereof.3. The two-component repair material of claim 1 , wherein the hydraulic binder comprises:a1) 2-100 parts by mass of Portland Cement;a2) 5-150 parts by mass of aluminate cement; anda3) 1-20 parts by mass of a source of calcium sulfate.4. The two-component repair material of claim 3 , wherein the source of calcium sulfate is anhydrite.5. The two-component repair material of claim 1 , wherein the aqueous emulsion of bitumen is an anionic aqueous emulsion having approximately 10-75 w % of asphalt or bitumen binder.6. The two-component repair material of claim 1 , wherein the second component B includes greater than about 70 w % of the aqueous emulsion of bitumen.7. The two-component repair material of claim 1 , wherein the second component B additionally comprises at least one additive selected from the group consisting of a surfactant ...

EXPANSIVE CEMENT

An expansive additive composition for use in Portland cements and a method of using such an additive composition is provided. The additive composition can include a calcium aluminate cement additive and a lithium compound. The additive composition is capable of producing expansion in set cements when the temperature is at or below room temperature and minimizes the amount of calcium aluminate cement additive needed. 1. A composition comprising the following components:a calcium aluminate cement in an amount from about 5% to about 50% by weight of the composition;a lithium compound in an amount from about 0.01% to about 5.00% by weight of the composition;calcium hydroxide present in an amount from about 1% to about 20% by weight of the composition;sodium bicarbonate present in an amount from about 0.1% to about 5.0% by weight of the composition; andgypsum present in an amount from about 50% to about 80% by weight of the composition; andwherein the components of the composition are configured such that when the composition is added to a Portland cement and water to produce a cement composition there results at least a 10% expansion within 1 day after the onset of curing of the cement composition.2. The composition of claim 1 , wherein the components of the composition are configured such that the expansion occurs at temperatures below 100° F.3. The composition of claim 1 , wherein the components of the composition are configured such that the expansion occurs at temperatures below about 73° F.4. The composition of claim 1 , further comprising calcium sulfate present in an amount from about 50% to about 80% by weight of the composition.5. The composition of claim 1 , wherein said calcium aluminate cement is in an amount from about 10% to about 40% by weight of the composition and wherein said lithium compound is in an amount from about 0.05% to about 1.00% by weight of the composition.6. The composition of claim 5 , wherein said calcium aluminate cement is in an amount ...

BINDER AND PROCESS FOR THE ADDITIVE PRODUCTION OF MANUFACTURED ITEMS

Binder for the additive production of manufactured items, in particular made of conglomerate, adapted to be distributed on a layer of inert granular material in order to form a rigid matrix incorporating the granules of the inert granular material. The binder according to the invention is a substantially inorganic binder with geopolymer base. Another object of the invention is a process for the additive production of manufactured items by means of the use of the aforesaid binder and the use of geopolymers as binders in the additive production of manufactured items. 1. Binder for the additive production of manufactured items , in particular made of conglomerate , adapted to be distributed on a layer of inert granular material in order to form a rigid matrix incorporating the granules of said inert granular material , characterized in that it is a substantially inorganic binder with geopolymer base.2. Binder according to claim 1 , characterized in that it is obtained starting from a first solid component in powder form comprising reactive aluminosilicates and from a second liquid component comprising an alkaline or acidic aqueous solution claim 1 , the molar ratio between the water contained in the liquid component and the oxides contained in the first solid component and in the second liquid component claim 1 , which come to constitute the geopolymer network claim 1 , being controlled in order to optimize both the reactivity of the mixture and its rheology claim 1 , in particular the ratio between the water and the alumina contained in the solid component (HO/AlO) being comprised between 16 and 23 and claim 1 , preferably claim 1 , between 17 and 20.3. Binder according to claim 2 , characterized in that it comprises one or more additives selected from among retardant additives claim 2 , adapted to slow the start of the geopolymerization reaction between the first solid component and the second liquid component claim 2 , accelerant additives claim 2 , adapted to ...

GRAPHENE REINFORCED CONCRETE

A reinforced concrete material is described comprising a cementitious material () in which graphene is substantially uniformly distributed. A method of production of concrete is also described comprising the steps of forming a substantially uniform suspension () of graphene with water, and mixing the suspension () with a cementitious material () to form a concrete material (). 1. A reinforced concrete material comprising a cementitious material in which graphene is substantially uniformly distributed.2. A material according to claim 1 , wherein the graphene is in the form of flakes.3. A material according to claim 2 , wherein the flakes are of lateral dimensions of less than 5 μm.4. A material according to claim 3 , wherein the flakes are of lateral dimensions in the range of 1-3 μm.5. A material according to claim 4 , wherein the flakes are of lateral dimensions in the range of 1.5-2.5 μm.6. A material according to claim 5 , wherein the flakes have a lateral dimension in the region of 2 μm.7. A material according to claim 1 , wherein the graphene is dispersed or suspended within water prior to the formation of the concrete material.8. A material according to claim 7 , wherein the concentration of graphene within the water is in the range of 0.2-2.5 g/L.9. A material according to claim 8 , wherein the concentration of graphene within the water is in the range of 0.3-1.5 g/L.10. A material according to claim 9 , wherein the concentration of graphene within the water is in the range of 0.6-0.8 g/L.11. A material according to claim 10 , wherein the concentration of graphene within the water is in the region of 0.7 g/L.12. A material according to claim 1 , further comprising at least one of a plasticizer or superplasticizers claim 1 , a water reducing agent claim 1 , an early age strength improvement agent claim 1 , a retarding admixture and a corrosion inhibiting material.13. A material according to claim 1 , wherein the cementitious material comprises at least one of ...

CONCRETE REPAIR COATING

A concrete and asphalt repair coating formulation includes a cement component and an aggregate component. The cement component includes a calcium sulfoaluminate cement and a Portland cement. The aggregate component includes coarse aggregates between 125-500 microns in diameter and fine aggregates between 5-62.5 microns in diameter. 1. A concrete repair coating formulation , comprising:a cement component including a calcium sulfoaluminate cement and a Portland cement; andan aggregate component including coarse aggregates between 62.5 microns and 500 microns in diameter and fine aggregates between 62.5 microns to less than 5 microns in diameter.2. The concrete repair coating formulation of wherein said cement component has a ratio by weight of Portland cement to calcium sulfoaluminate cement ranging from 1/19 to 1/5.66.3. The concrete repair coating formulation of claim 2 , wherein the coarse aggregates include screen fractions of (a) minus 500 microns by plus 250 microns of limestone claim 2 , dolomitic limestone claim 2 , dolomite or quartz sand constituting between 10-25% by weight of total product claim 2 , (b) less than 250 microns by 125 microns constituting between 20-35% by weight of the total product and (c) less than 125 microns by plus 62.5 microns constituting between 6% to 10% by weight of total product.4. The concrete repair coating formulation of claim 3 , wherein said coarse aggregates are 50% to 60% by weight above 62.5 microns in diameter of the total product.5. The concrete repair coating formulation of claim 4 , wherein said fine aggregate of limestone claim 4 , dolomitic limestone claim 4 , dolomite and quartz sand fraction of less than 62.5 microns constitutes between 4-8% by weight of the total product.6. The concrete repair coating formulation of claim 5 , wherein said fine aggregates further include a quartz flour filler with an average particle size 5 microns that constitutes between 5-15% by weight of total concrete repair coating ...

ACTIVATORS AND METHODS FOR SETTING A JOINT COMPOUND

A kit for preparing a set activator blend and a method for controlling a setting reaction with the set activator blend of a setting joint compound, in particular of a ready-mixed setting joint compound, the method including: 1) blending together a first set activator including a cadmium compound, lead compound and/or zinc compound and a second set activator including a ferrous compound, aluminum compound and/or manganese compound, and thereby obtaining a set activator blend; and 2) mixing the set activator blend with the setting joint compound and thereby controlling the setting reaction of the setting joint compound. 1. A method for controlling a setting reaction of a setting joint compound , the method comprising:blending together a first set activator comprising a cadmium compound, lead compound and/or zinc compound and a second set activator comprising a ferrous compound, aluminum compound and/or manganese compound, and thereby obtaining a set activator blend; andmixing the set activator blend with the setting joint compound and thereby controlling the setting reaction of the setting joint compound.2. The method of claim 1 , wherein the first set activator is zinc oxide claim 1 , zinc hydroxide and/or zinc salt and wherein the second set activator is aluminum oxide claim 1 , aluminum hydroxide and/or aluminum salt.3. The method of claim 1 , wherein the first set activator is zinc sulfate and wherein the second set activator is alum.4. The method of claim 1 , wherein the first set activator is zinc sulfate and wherein the second set activator is alum claim 1 , and wherein the zinc sulfate and alum are used in a ratio in the range from 3:1 to 1:1 by dry weight of zinc sulfate to alum.5. The method of claim 1 , wherein the first set activator is zinc sulfate and wherein the second set activator is alum claim 1 , and wherein the zinc sulfate and alum are used in a ratio in the range from 3:1 to 1:1 by dry weight of zinc sulfate to alum and wherein the set activator ...

Method For Designing Mixable Slurries

A method of determining slurry mixability may include: providing a dry blend comprising one or more particulate materials; calculating a minimum water requirement of the dry blend; calculating a water requirement of a slurry having a target slurry density and comprising the dry blend; determining if the slurry is mixable based on the water requirement of the slurry and the minimum water requirement; and preparing the slurry if the slurry is mixable. 1. A method of determining slurry mixability comprising:providing a dry blend comprising one or more particulate materials;calculating a minimum water requirement of the dry blend;calculating a water requirement of a slurry having a target slurry density and comprising the dry blend;determining if the slurry is mixable based on the water requirement of the slurry and the minimum water requirement; andpreparing the slurry if the slurry is mixable.2. The method of claim 1 , further comprising at least one of measuring a water requirement for the one or more particulate materials and providing a water requirement for the one or more particulate materials.3. The method of claim 1 , wherein the step of calculating the minimum water requirement of the composition comprises calculating a water requirement by a linear combination of water requirements of the one or more particulate materials or a non-linear combination of water requirements of the one or more particulate materials.5. The method of claim 1 , wherein the step of calculating the minimum water requirement of the composition comprises calculating a non-linear combination with the following formula:{'br': None, 'sub': Blend', 'i', 'i, 'i': 'M', 'sup': B', {'sub2': 'i'}], 'WR=Σ(WR)'}{'sub': blend', 'i, 'where WRis the minimum water requirement, Mi is the mass fraction or mass of particulate material i of the composition, and WRis the water requirement of particulate material i of the composition, and Bi is a material constant for particulate material i of the ...

Self-cooling composite materials

The present invention relates to a composite material which comprises at least one thermoresponsive polymer and at least one inorganic building material. The present invention further relates to a method for producing the composite material and also to the use of the composite material for cooling and for regulating the humidity.

METHOD FOR THE MANUFACTURE OF CALCIUM SILICATE HYDRATE USED AS HARDENING ACCELERATOR IN CONCRETE AND CEMENT-BASED MATERIALS, CALCIUM SILICATE HYDRATE MANUFACTURED WITH SAID METHOD

A process for the manufacturing of a slurry containing nucleating agents which comprises reacting at least one source of a Ca containing compound with at least one source of a Si containing compound, in an aqueous media and in the presence of a doping agent selected from the group consisting of P, B, S, and mixtures thereof; wherein: (i) the reaction is carried out at a temperature comprised from 100 to 350° C.; (ii) the total molar ratio Ca/Si is 1.5-2.5, and (iii) the total molar ratio doping agent/Si is 0.01-2; provided that: (a) when the sole doping agent is P, the total molar ratio P/Si is 0.1-2; (b) when the sole doping agent is B, the total molar ratio B/Si is 0.01-2, and (c) when the sole doping agent is S, the total molar ratio S/Si is 0.1-2. 1. A process for the manufacturing of a slurry containing nucleating agents which comprises reacting at least one source of a Ca containing compound with at least one source of a Si containing compound , in an aqueous media and in the presence of a doping agent selected from the group consisting of a compound containing P , a compound containing B , a compound containing S , and mixtures thereof; wherein:(i) the reaction is carried out at a temperature from 100 to 350° C.;(ii) the total molar ratio of Ca to Si is from 1.5 to 2.5, and(iii) the total molar ratio of doping agent to Si is from 0.01 to 2; provided that:(a) when the sole doping agent is a compound containing P, the total molar ratio of P to Si is from 0.1 to 2;(b) when the sole doping agent is a compound containing B, the total molar ratio of B to Si is from 0.01 to 2, and(c) when the sole doping agent is a compound containing S, the total molar ratio of S to Si is from 0.1 to 2.2. The process according to that additionally comprises reacting at least one source of an Al containing compound.3. The process according to claim 1 , wherein the nucleating agents comprise Calcium (Aluminium) Silicate Hydrate (C-(A)-S-H) in the form of defective tobermorite.4. The ...

ARRANGEMENT AND METHOD FOR MIXING A PASTE AT A WASTE DISPOSAL SITE

An arrangement and a method for mixing and handling industrial side-stream materials. The mixer () is arranged onto a movable work machine () and it is used for mixing at least two side-stream materials to form a geopolymer. The side-stream materials are processed between a waste pile () and a casting area () in the mixer (). Cast paste is allowed to harden and after that it is crushed to obtain an earthwork material. 1. An arrangement at a factory waste disposal site , which arrangement comprises at least one waste pile of a first industrial side-stream material ,wherein the arrangement further comprises:at least one movable work machine which is provided with a mixer, and wherein the work machine is arranged to take said first industrial side-stream material directly with the mixer from said waste pile for handling it by the mixer;an admixture station which comprises at least one feed device for feeding at least one admixture into the material located in the mixer of the work machine;a casting area which is arranged to receive from the mixer a geopolymeric hardenable paste formed by said side-stream material and admixtures as a result of their mixing;and in which arrangement the handled material is kept in said mixer of the work machine throughout the whole handling process from the waste pile up to the casting area.2. The arrangement according to claim 1 , wherein-the arrangement further comprises:a quarrying device for quarrying hardened paste in the casting area;a crusher device for crushing material extracted by quarrying to obtain crushed material; anda temporary storage for receiving crushed material from the crusher device.3. The arrangement according to claim 1 , whereinthe factory waste disposal site is located in connection with a pulp mill; andthe waste pile is green liquor precipitate, whereby the first industrial side-stream material taken from the waste pile with the mixer is green liquor precipitate.4. A method for mixing a paste claim 1 , which ...

COMPOSITION BASED ON CALCIUM SILICATE HYDRATE

The invention relates to a composition comprising 5-50 wt % of calcium silicate hydrate, 10-60 wt % of at least one water-soluble, acid group-containing polymer comprising polyether groups, and 5-40 wt % of at least one polyalkylene glycol ether. Further disclosed is a process for preparing this composition, and cementitious mixtures comprising the composition. A further aspect of the present invention is the use of the composition of the invention in cementitious mixtures for accelerating the development over time of the dispersing action of the acid group-containing polymer after addition of the mixing water and a subsequently accelerated curing of the mixture. 1. A composition comprising5-50 wt % of calcium silicate hydrate,10-60 wt % of at least one water-soluble, acid group-containing polymer comprising polyether groups, [{'br': None, 'sup': 'α', 'sub': β', '2β', 'ω, 'R—(CHO)—H\u2003\u2003(1)'}, 'where', {'sup': 'α', 'Ris hydrogen or an aliphatic hydrocarbon radical having 1 to 20 C atoms, a cycloaliphatic hydrocarbon radical having 5 to 8 C atoms, or an optionally substituted aryl radical having 6 to 14 C atoms, the aryl radical comprising no acid groups, and'}, {'sub': β', '2β, 'β independently at each occurrence and in a manner identical or different for each (CHO) unit is 2, 3, 4 or 5, and'}, 'ω is 3 to 200., '5-40 wt % of at least one polyalkylene glycol ether of the formula (1)'}2. The composition according to claim 1 , wherein the polyether groups of the at least one water-soluble claim 1 , acid group-containing polymer are polyether groups of the structural unit (I) claim 1 ,{'br': None, 'sub': k', 'n, '*—U—(C(O))—X-(AlkO)—W\u2003\u2003(I)'}where* indicates the bonding site to the acid group-containing polymer,U is a chemical bond or an alkylene group having 1 to 8 C atoms,{'sup': '1', 'X is oxygen, sulfur or a group NR,'}k is 0 or 1,n is an integer whose average value, based on the acid group-containing polymer, is in the range from 3 to 300,{'sub': 2 ...

FOAMED LIGHTWEIGHT REFRACTORY MONOLITHIC COMPOSITION

A foamed lightweight monolithic refractory castable is provided. The castable includes one or more refractory aggregates as a main constituent, one or more foaming additives in a range of 0.1 wt % to 3.0 wt %, one or more cellulosic powder air-entraining additives in a range of 0.005 wt % to 2.0 wt %, one or more binders in a range of 1 wt % to 40 wt %, and one or more superplasticizers in a range of 0.05 wt % to 0.5 wt %. The refractory aggregates include at least one of alumina and silica. The foaming additives include at least one of alkylbenzene sulfonates, alkene sulfonates, and hydroxylalkane sulfates. The superplasticizers include at least one of sodium polyacrylates, naphthalene sulfonates, polyethylene glycols, polycarboxylates, polyacrylates, and polycarboxylate ethers. 1. A foamed lightweight monolithic refractory castable , comprising:one or more refractory aggregates as a main constituent, the refractory aggregates comprising at least one of alumina and silica;one or more foaming additives in a range of 0.1 wt % to 3.0 wt %, the foaming additives comprising at least one of alkylbenzene sulfonates, alkene sulfonates, and hydroxylalkane sulfates;one or more cellulosic powder air-entraining additives in a range of 0.005 wt % to 2.0 wt %;one or more binders in a range of 1 wt % to 40 wt %; andone or more superplasticizers in a range of 0.05 wt % to 0.5 wt %, the superplasticizers comprising at least one of sodium polyacrylates, naphthalene sulfonates, polyethylene glycols, polycarboxylates, polyacrylates, and polycarboxylate ethers.2. The castable of claim 1 , wherein the refractory aggregates further comprise at least one of kyanites claim 1 , pyrophillites claim 1 , silica sands claim 1 , dolomites claim 1 , and magnesias.3. The castable of claim 2 , wherein the refractory aggregates further comprise at least one of expanded clay aggregates claim 2 , fireclays claim 2 , mullites claim 2 , chamottes claim 2 , bauxites claim 2 , and high-purity aluminas.4. ...

CEMENT FORMULATIONS AND METHODS

Disclosed are improved compositions, systems, methods and techniques for processing and preparing cement, cement constituents and concrete formulations involving natural pozzolans. In various embodiments, the water demand, compressive strength, set times and workability in concrete incorporating certain natural pozzolans can be improved by blending with calcium carbonate powders, while further improvements can be accomplished if the calcium carbonate is inter-ground with the natural pozzolan to a desired and/or minimum fineness. This addition of calcium carbonate, fly ash, ground granulated blast furnace slag, ground glass and various acids to a natural pozzolan can desirably reduce water requirements and improve the physical performance characteristics of the natural pozzolan and the overall characteristics of the concrete. Various applications may allow for (1) extension of limited fly ash supplies in certain regions, (2) greater replacement of costly Portland cement, and/or (3) significant reductions of greenhouse gases resulting from Portland cement manufacture. 1. A pozzolanic composition for use in concrete and mortar , the composition comprising a natural pozzolan in concentration of 1 wt % to about 99 wt % and a calcium carbonate source inter-ground in an attrition-type mill to a fineness such that a median particle size D50 is equal or less than 25 microns.2. The pozzolanic composition of claim 1 , wherein the inter-ground combination of the natural pozzolan and calcium carbonate source have significantly lower water requirements in concrete as compared to the natural pozzolan by itself.3. The pozzolanic composition of claim 1 , wherein a weight ratio of said natural pozzolan is in a concentration of about 50 wt % to 90 wt %.4. The pozzolanic composition of claim 1 , wherein said natural pozzolan is a volcanic ash and/or diatomaceous earth with pozzolanic properties.5. The pozzolanic composition of claim 1 , wherein the natural pozzolan comprises LASSENITE ...

Dry Mix and Concrete Composition Containing Bed Ash and Related Methods

Embodiments of a dry mix for producing a concrete composition are provided. The dry mix includes aggregate, cement, and bed ash. The bed ash contains the combustion product of a fluidized bed coal combustion reaction. Additionally, embodiments of a method of preparing the dry mix and embodiments of a method of preparing a concrete composition are provided. The dry mix is also suitable for repairing soil slips, and embodiments of a method of repairing a soil slip are also provided. 1. A method of repairing a soil slip on a slope , the method comprising the steps of:excavating earth from the soil slip to a depth below a slip plane of the soil slip;mixing the earth with a dry mix to create an augmented soil, the dry mix comprising bed ash and cement;replacing the augmented soil in the soil slip; andcompacting the augmented soil.2. The method of claim 1 , wherein the weight ratio of bed ash to cement in the dry mix is from 3:1 to 5:1.3. The method of claim 2 , wherein the weight ratio of bed ash to cement in the dry mix is about 4:1.4. The method of claim 1 , wherein the dry mix comprises 18% to 20% by weight of the cement.5. The method of claim 1 , wherein the dry mix further comprises aggregate.6. The method of claim 5 , wherein the dry mix comprises substantially equal volumes of aggregate and of bed ash and cement.7. The method of claim 5 , wherein the aggregate is 2″×3″ crushed stone.8. The method of claim 1 , wherein the step of excavating further comprises forming one or more keyways in the slope.9. The method of claim 1 , wherein the augmented soil comprises 5% to 40% by weight of the dry mix.10. The method of claim 9 , wherein the augmented soil comprises from 10% to 15% by weight of the dry mix.11. The method of claim 1 , wherein the step of replacing the augmented soil in the soil slip further comprises filling the soil slip in lifts of no more than 24″.12. The method of claim 11 , wherein the compacting step is performed after each lift.13. The method of ...

ADDITIVE FOR SLURRY, DRILLING MUD, AND CEMENT SLURRY

Provided by the present invention is an additive for a slurry being capable of inhibiting viscosity elevation and dehydration at high temperatures at low cost, through use for a slurry for civil engineering and construction (for example, a drilling mud and a drilling cement slurry for use in well drilling. etc.), and the like. A powdery additive for a slurry, the powdery additive containing a vinyl alcohol polymer, which has: a solubility of 25% or less when immersed in hot water at 60° C. for 3 hours; a degree of saponification of at least 99.5 mol %; an average degree of polymerization of at least 1,500 and 4,500 or less; and the amount of 1,2-glycol linkage of 1.8 mol % or less, the powdery additive being capable of passing through a sieve having a nominal mesh opening size of 1.00 mm. 1: A powdery additive comprising a vinyl alcohol polymer , wherein a solubility of 25% or less when immersed in hot water at 60° C. for 3 hours;', 'a degree of saponification of at least 99.5 mol %;', 'an average degree of polymerization of 1,500 to 4,500; and', 'an amount of 1,2-glycol linkage of 1.8 mol % or less, and, 'the vinyl alcohol polymer hasthe powdery additive is capable of passing through a sieve having a nominal mesh opening size of 1.00 mm.2: The additive according to claim 1 , wherein a proportion of a ethylene unit with respect to total structural units in the vinyl alcohol polymer is less than 10 mol %.3: The additive according to claim 1 , which is suitable as an additive for a slurry for civil engineering and construction.4: The additive according to claim 3 , which is suitable as an additive for a drilling mud.5: The additive according to claim 1 , which is capable of passing through a sieve having a nominal mesh opening size of 500 μm.6: The additive according to claim 3 , which is suitable as an additive for a cement slurry.7: The additive according to claim 1 , which is capable of passing through a sieve having a nominal mesh opening size of 250 μm.8: A ...

METHOD FOR OBTAINING A COMPACTED MATERIAL AND COMPACTED MATERIAL OBTAINED THEREBY

In a method for obtaining a compacted material, a) a set of particles of raw materials is mixed with 1-50% by weight of a hydraulic binder to form a dry composition, the percentage being relative to the total weight of the dry composition, the particle size distribution of the raw material particles being characterised by a first reference diameter ≤50 millimetres and a second reference diameter ≥0.08 micrometres, b) the dry composition is mixed with 1-35% by weight of water to form a mixed composition, the percentage relative to the total weight of the dry composition, c) the mixed composition is vibrated ≥0.3 millimetres at 20-80 Hertz, while a compressive stress is applied, the value of the applied compressive stress being at least 2 MegaPascal. Also disclosed is a method for obtaining a multilayer compacted material and to the materials obtained according to the methods. 1. A process for obtaining a compacted material according to which ,a) a dry composition is formed by mixing, on the one hand, a set of raw material particles whose particle size distribution is characterized by a first reference diameter d90 less than or equal to 50 millimeters and a second reference diameter d10 greater than or equal to 0.08 micrometer with, on the other hand, from 1% to 50% of a hydraulic binder, by mass based on the total mass of the dry composition,b) said dry composition formed in step a) is mixed with 1% to 35% water, by mass based on the total mass of the dry composition, to form a mixed composition,c) the mixed composition obtained in step b) is vibrated at a frequency between 20 hertz and 80 hertz and at an amplitude greater than or equal to 0.3 millimeter, and then, in conjunction with the vibration, a compressive stress is applied to said mixed composition,the value of said applied compressive stress being greater than or equal to 2 megapascals.2. The process as claimed in claim 1 , according to which claim 1 ,a first layer of material is formed with the mixed ...

COLORING AGENT COMPOSITION AND METHOD FOR PRODUCING SAME

Provided is a coloring agent composition to be added to a gypsum-containing raw material powder constituting a gypsum product and to be used for coloring the gypsum product, the coloring agent composition being a powder containing a pigment, calcined gypsum, and amorphous silica. A process for producing the coloring agent composition includes a first step of mixing a pigment, calcined gypsum, and amorphous silica to obtain a mixed powder. Use of the coloring agent composition makes it possible to easily produce gypsum products such as a powder and a hardened body that are excellent in colorability. 1. A coloring agent composition to be added to a gypsum-containing raw material powder constituting a gypsum product and to be used for coloring the gypsum product , the coloring agent composition being a powder comprising:a pigment;calcined gypsum; andamorphous silica.2. The coloring agent composition according to claim 1 , wherein the amorphous silica has a number average particle diameter of 5 to 40 nm.3. The coloring agent composition according to claim 1 , wherein a content of the amorphous silica is 0.01 to 1 part by mass relative to 1 part by mass of the pigment.4. The coloring agent composition according to claim 1 , wherein a content of the calcined gypsum is 1 to 100 parts by mass relative to 1 part by mass of the pigment.5. The coloring agent composition according to claim 1 , wherein the calcined gypsum is at least one selected from the group consisting of α hemihydrate gypsum claim 1 , β hemihydrate gypsum claim 1 , and type III anhydrous gypsum.6. A process for producing the coloring agent composition according to claim 1 , the process comprising a first step of mixing the pigment claim 1 , the calcined gypsum claim 1 , and the amorphous silica to obtain a mixed powder.7. The process for producing the coloring agent composition according to claim 6 , wherein the pigment claim 6 , the calcined gypsum claim 6 , and the amorphous silica are pulverized ...

METHOD OF MANUFACTURING A COMPOSITE GRANULAR GROUTING MATERIAL

A method of manufacturing a composite granular grouting material according to the present invention comprises: mixing bentonite and auxiliary component; forming spherical composite granules by agritating the mixture of bentonite and auxiliary component; drying the formed composite granules; and forming bentonite layer having lower density for forming slurry outside the composite granules by mixing bentonite with the spherical composite granules and agritating the same. The grouting material according to the present invention has excellent thermal conductivity and water blocking capability. 1. A method of manufacturing a composite granular grouting material , which comprises:mixing bentonite and an auxiliary component;forming spherical composite granules by agritating the mixture of bentonite and the auxiliary component;drying the spherical composite granules; andforming bentonite layer having lower density for forming slurry outside the composite granules by mixing bentonite with the spherical composite granules and agritating the same.2. The method according to claim 1 , wherein water is sprayed during agritating.3. The method according to claim 1 , wherein said auxiliary component is any of sand claim 1 , alumina claim 1 , or graphite.4. The method according to claim 3 , wherein the mixing ratio of the bentonite to sand of the composite granules ranges from 1:1 to 1:8.5. The method according to claim 1 , wherein a binder is added to improve the mechanical strength.6. The method according to claim 1 , wherein the bentonite layer for forming slurry further includes viscosity-reducing agent or dispersant.7. The method according to claim 1 , wherein the average diameter of the composite granular grouting material ranges from 1 to 10 mm.8. The method according to claim 1 , wherein water is sprayed during agritating claim 1 , and the average diameter of the composite granular grouting material ranges from 1 to 10 mm.9. The method according to claim 1 , wherein water is ...

Method Of Creating A Composite Cement With Enhanced Properties For Use In Oil And Gas Wells

This invention relates to using a unique blend of components of a composite cement and subjecting them to a rotary mill process using variably sized and shaped media to reduce the blends' particle size. The invention is novel in that it mills the blended materials together to achieve reduced particle size, increased particle surface area, higher compressive strength and lower permeability. In one embodiment, the invention combines fly ash or other pozzolan material with a cement of any type at varying rations between 1% and 99%. In a further embodiment the invention combines fly ash or other pozzolan material at 60% with a cement of any type at 40%. 1. A method for creating a rotary milled composite cement mixture suitable for use in oil in gas wells comprising: 40% of cement;', '60% of fly ash;, 'rotary milling a composite cement mixture comprised of,'} a maximum particle size of 25 microns;', 'a mean particle size of less than 12 microns; and', {'sup': '2', 'an average particle surface area of at least 14,500 cm/g.'}], 'wherein the rotary milled composite cement mixture has2. The method of claim 1 , further comprising hydrating the rotary milled composite cement mixture to a density of 12 pounds per gallon and having a compressive strength of more than 1 claim 1 ,000 pounds per square inch.3. The method of further comprising hydrating the rotary milled composite cement mixture to a density of 13.8 pounds per gallon and having a compressive strength of more than 2 claim 1 ,000 pounds per square inch.4. The method of claim 1 , further comprising hydrating the rotary milled composite cement mixture to a density of 16 pounds per gallon and having a compressive strength of more than 4 claim 1 ,000 pounds per square inch. This application claims priority to U.S. patent application Ser. No. 15/075,198, filed on Mar. 31, 2016. The disclosures of the prior application are incorporated by reference herein in its entirety.The present invention relates to a method of ...

SELF-PRESTRESSED REINFORCED CONCRETE ELEMENTS

The present invention relates to improved concrete elements, particularly to self-prestressed, high-performance concrete elements (SP-HPC elements); to cementitious compositions suitable, for producing such concrete elements; to methods of manufacturing such concrete elements and such cementitious compositions; to the use of specific components in concrete elements and cementitious mixtures. The compositions and elements described herein comprise an effective amount of expansive agents in combination with superabsorbent polymers (SAP) and shrinkage reducing admixtures (SRA), and optional further components as defined in the claims. The present invention further provides for improved tendons, suitable for SP-HPC elements. 1. A cementitious mixture comprising:{'sup': '3', '(a) cement, 300 to 1000 kg/mof the cementitious mixture;'}{'sup': '3', '(b) aggregate, 700 to 2000 kg/mof the cementitious mixture;'}{'sup': '3', '(c) water, 40 to 600 kg/mof the cementitious mixture;'}{'sup': '3', '(d) expansive agent, 30 to 150 kg/mof the cementitious mixture, selected from the group consisting of MgO-, CaO- and CSA-based expansive agents;'}(e) superabsorbent polymer, 0.1-1.0% by mass of component (a), selected from the group consisting of cross-linked polyelectrolytes;(f) shrinkage reducing admixture, 0.1 to 5% by mass of component (a);(g) optionally plasticizer, 0.01 to 5% by mass of component (a);(h) optionally mineral admixtures, 5 to 230% by mass of component (a);(i) optionally additives in the range 0.01-5% by mass of component (a); andwhere the ratio component (d):component (a) is at least 1:10.2. The cementitious mixture according to claim 1 , wherein component (d) is selected from the group of CSA-based expansive agents.3. The cementitious mixture according to or claim 1 , wherein:component (a) is selected from the group of Portland cements and blended cements containing Portland cement clinker; and/orcomponent (b) is selected from aggregates with the maximum aggregate ...

Machine for manufacturing composite materials

A system for making a cementitious composite includes a cementitious material supply system for dispensing a powdered cementitious material or a semi-powdered cementitious material into a receiving material. The receiving material includes a structural layer and a sealing layer. The structural layer includes an open continuous volume extending from a first side to a second side opposite the first side. The sealing layer is coupled to the first side. The cementitious material supply system is configured to dispense the powdered cementitious material or the semi-powdered cementitious material into the open continuous volume to fill the open continuous volume.

PROCESS FOR PRODUCING AN AQUEOUS DISPERSION AND REDISPERSIBLE DISPERSION POWDER PRODUCED THEREFROM

The present invention relates to a process for producing a redispersible dispersion powder, to the redispersible dispersion powder obtainable by this process, to an aqueous dispersion obtainable by step (1) of this process, and to a building material composition comprising the redispersible dispersion powder and/or the aqueous dispersion, to the use of the redispersible dispersion powder in a building material composition and to the use of the aqueous dispersion for production of a redispersible dispersion powder. 1: A process for producing a redispersible dispersion powder , the process comprising: (i) a second aqueous dispersion, where the second aqueous dispersion comprises particles, where the particles comprise at least one polymer I, where the at least one polymer I comprises monomer units formed from at least one ethylenically unsaturated monomer; and', '(ii) a polyacid II comprising monomer units formed from at least one ethylenically unsaturated monomer comprising a sulfonic acid group or a salt thereof;', 'wherein, in (1), an additive comprising a polyoxyalkylene group present, wherein the additive is', '(a) mixed as a further component in the mixing, or', '(b) applied by emulsion polymerization to a surface of the particles prior to the mixing, or', '(c) incorporated as a monomer unit into the at least one polymer I of the particles prior to the mixing;', 'and wherein the first aqueous dispersion has a pH of <4; and, '(1) mixing, to obtain a first aqueous dispersion, at least'}(2) drying the first aqueous dispersion in order to obtain the redispersible dispersion powder.2: The process of claim 1 , further comprising(3) mixing the redispersible dispersion powder withan antiblocking agent.3: The process of claim 1 , wherein the first aqueous dispersion has a pH of <3.4: The process of claim 1 , wherein the at least one polymer I comprises monomer units formed from at least one ethylenically unsaturated monomer selected from the group consisting of ethylene ...

ADDITIVE FOR CEMENT COMPOSITION AND CEMENT COMPOSITION

Provided is an additive for a cement composition capable of preparing the cement composition in which a cellulose being the additive can be uniformly dispersed into a cement matrix thereby enabling to suppress an increase in viscosity thereof, and capable of producing a cement structure having a less shrinkage strain (namely, a high reinforcing effect) and having a fine as well as homogeneous texture, and the additive for a cement composition includes powdery cellulose. 1. An additive for a cement composition , the additive comprising powdery cellulose.2. The additive for a cement composition according to claim 1 , wherein an average degree of polymerization of the powdery cellulose is 300 to 3 claim 1 ,000.3. The additive for a cement composition according to claim 1 , wherein an alkali elution rate of the powdery cellulose is 0.1 to 12.0%.5. The additive for a cement composition according to claim 4 , wherein the copolymer is at least any one of a copolymer (A1) having the constituent unit (I) and the constituent unit (II) claim 4 , and a copolymer (A2) having the constituent unit (I) claim 4 , the constituent unit (II) claim 4 , and the constituent unit (III).6. A cement composition claim 4 , comprising the additive of and a cement claim 4 , wherein an addition rate of the copolymer relative to a total weight of the cement is 0.01 to 5.0% by weight claim 4 , and an addition rate of the powdery cellulose relative to the total weight of the cement is 1 to 50% by weight.7. The additive for a cement composition according to claim 1 , wherein the powdery cellulose comprises powdery cellulose (B1) having an average degree of polymerization of 300 to less than 900 as well as an alkali elution rate of 5.0 to 12.0%.8. The additive for a cement composition according to claim 1 , wherein the powdery cellulose comprises powdery cellulose (B2) having an average degree of polymerization of 900 to 3 claim 1 ,000 as well as an alkali elution rate of 0.1 to less than 5.0%.9. The ...

HYDROPHOBIC, WATER-REDISPERSIBLE POLYMER POWDER COMPOSITION

A hydrophobic, water-redispersible polymer powder composition contains 111.-. (canceled)13. The hydrophobic claim 12 , water-redispersible polymer powder composition of claim 12 , wherein the main polymer a) comprises 65 to 90 parts by weight of vinyl laurate a1).14. The hydrophobic claim 12 , water-redispersible polymer powder composition of claim 12 , wherein the main polymer a) comprises:a1) 65 to 90 parts by weight of vinyl laurate monomer units,a2) 5 to 30 parts by weight of vinyl acetate monomer units, anda3) 5 to 20 parts by weight of ethylene monomer units, and it optionally also comprisesa4) up to 10 parts by weight of ancillary monomer units.15. The hydrophobic claim 12 , water-redispersible polymer powder composition of claim 12 , wherein protective colloid b) comprises one or more partially hydrolyzed polyvinyl alcohols whose degree of hydrolysis is 85 to 94 mol % and whose {umlaut over (H)}oppler viscosity in 4% aqueous solution is 3 to 15 mPas.16. A process for the production of a hydrophobic claim 12 , water-redispersible polymer powder composition of claim 12 , comprising free-radical-initiated emulsion polymerizing the monomers in an aqueous medium claim 12 , followed by drying a resultant aqueous polymer dispersion.17. A dry mortar composition claim 12 , comprising a hydrophobic claim 12 , water-redispersible polymer powder composition of .18. A dry mortar composition for production of construction adhesives claim 12 , renders claim 12 , troweling compositions claim 12 , floor-filling compositions claim 12 , leveling compositions claim 12 , sealing slurries claim 12 , jointing mortars claim 12 , skimcoats claim 12 , or paints claim 12 , comprising at least one hydrophobic claim 12 , water-redispersible polymer powder composition of .19. A construction adhesive or coating for composite thermal insulation systems claim 12 , comprising a hydrophobic claim 12 , water-redispersible polymer powder composition of .20. A skimcoat formulation claim 12 , ...

BUILDING MATERIAL AND METHOD FOR MANUFACTURING BUILDING MATERIAL

[Object] To provide a building material having excellent durability. 1. A building material having a convex part formed on a surface thereof , the convex part including a first lateral surface part and a second lateral surface part corresponding to the first lateral surface part , whereinthe building material is formed from a mixture containing a hydraulic material, an admixture, and a plant-based reinforcing material,the plant-based reinforcing material at least in the convex part is distributed in the mixture with the hydraulic material and the admixture attached to the plant-based reinforcing material, anda distribution of the plant-based reinforcing material in the first lateral surface part and a distribution of the plant-based reinforcing material in the second lateral surface part are substantially the same.2. The building material according to claim 1 , whereinthe convex part includes a first edge part that is an edge part of the first lateral surface part and a second edge part that is an edge part of the second lateral surface part and that corresponds to the first edge part, anda distribution of holes formed in the first edge part and a distribution of holes formed in the second edge part are substantially the same.3. The building material according to claim 1 , whereinthe convex part includes a first edge part that is an edge part of the first lateral surface part and a second edge part that is an edge part of the second lateral surface part and that corresponds to the first edge part, andwater absorbency of the first edge part and water absorbency of the second edge part are substantially the same.4. The building material according to claim 1 , whereinthe convex part includes a first edge part that is an edge part of the first lateral surface part and a second edge part that is an edge part of the second lateral surface part and that corresponds to the first edge part, andfreeze-thaw durability of the first edge part and freeze-thaw durability of the ...

METHOD FOR PRODUCING A DISPERSANT

The invention relates to a method for producing a dispersant, comprising the steps of a) providing at least one water-soluble polymer comprising polyether groups, b) providing an inorganic component comprising at least one phyllosilicate which has an integral sheet charge of 0, 1 or 2, c) producing an aqueous suspension comprising the at least one water-soluble polymer comprising polyether groups and the inorganic component comprising the at least one phyllosilicate, and d) spray-drying the aqueous suspension to give a solid. Additionally disclosed is the use of the dispersant of the invention in an inorganic binder composition. 1. A method for producing a dispersant , comprising the steps ofa) providing at least one water-soluble polymer comprising polyether groups,b) providing an inorganic component, comprising at least one phyllosilicate which has an integral sheet charge of 0, 1 or 2,c) preparing an aqueous suspension comprising the at least one water-soluble polymer comprising polyether groups and the inorganic component comprising the at least one phyllosilicate,d) spray-drying the aqueous suspension to give a solid.2. The method according to claim 1 , wherein the polyether groups of the at least one water-soluble polymer are polyether groups of the structural unit (I) claim 1 ,{'br': None, 'sub': k', 'n, '*—U—(C(O))—X—(AlkO)—W \u2003\u2003(I)'}where* indicates the bonding site to the polymer,U is a chemical bond or an alkylene group having 1 to 8 carbon atoms,{'sup': '1', 'X is oxygen, sulfur or a group NR,'}k is 0 or 1,n is an integer whose average value based on the polymer is in the range from 3 to 300,{'sub': 2', '4', 'n, 'Alk is C-Calkylene, it being possible for Alk to be identical or different within the group (Alk-O),'}{'sub': 1', '6, 'W is a hydrogen, a C-Calkyl or an aryl radical or is the group Y-F, where'}Y is a linear or branched alkylene group having 2 to 8 carbon atoms and may carry a phenyl ring,{'sup': '2', 'F is a 5- to 10-membered nitrogen ...

CEMENT COMPOSITION ADDITIVE CONTAINING POLYCARBOXYLIC ACID COPOLYMER, ZINC OXIDE PARTICLES AND GLUCONATE

Disclosed are a cement composition additive with improved compressive strength and workability, including a polycarboxylic acid copolymer and/or a salt thereof, zinc oxide particles, and a predetermined amount of gluconic acid and/or a salt thereof, and a cement composition containing the same. 1. A cement composition additive comprising:a polycarboxylic acid copolymer and/or a salt thereof;zinc oxide; andgluconic acid and/or a salt thereof.2. The cement composition additive according to claim 1 , wherein claim 1 , when the cement composition additive comprises a salt of a polycarboxylic acid copolymer claim 1 , the salt of the polycarboxylic acid copolymer is obtained by neutralizing the polycarboxylic acid copolymer with an alkaline substance.3. The cement composition additive according to claim 2 , wherein the alkaline substance comprises one or more selected from the group consisting of hydroxides claim 2 , chlorides claim 2 , carbonates claim 2 , ammonia and organic amines of a metal having an oxidation number of +1 or +2.4. The cement composition additive according to claim 1 , wherein claim 1 , when the cement composition additive comprises a salt of gluconic acid claim 1 , the salt of gluconic acid is sodium gluconate or potassium gluconate.5. The cement composition additive according to claim 4 , wherein the salt of gluconic acid is sodium gluconate.6. The cement composition additive according to claim 1 , wherein the polycarboxylic acid copolymer is a copolymer of a monomer mixture comprising an alkoxypolyalkylene glycol mono(meth)acrylic acid ester monomer and a (meth)acrylic acid monomer.7. The cement composition additive according to claim 6 , wherein the polycarboxylic acid copolymer is a copolymer of a monomer mixture comprising 60% by weight to 99% by weight of an alkoxypolyalkylene glycol mono(meth)acrylic acid ester monomer and 1% by weight to 40% by weight of an (meth)acrylic acid monomer claim 6 , based on the total weight of the copolymer.8. The ...

INJECTION MOLDING APPARATUS AND INJECTION MOLDING METHOD

An injection molding apparatus including a ceramic powder material injection device, a supercritical fluid providing device, and a mold is provided. The ceramic powder material injection device is adapted to contain a ceramic powder material. The supercritical fluid providing device is adapted to provide a supercritical fluid to the ceramic powder material injection device. The mold has a molding concavity, wherein the ceramic powder material injection device is adapted to mix the ceramic powder material and the supercritical fluid to form a mixed material and inject the mixed material into the molding concavity. In addition, an injection molding method is also provided. 1. An injection molding apparatus comprising:a ceramic powder material injection device adapted to contain a ceramic powder material;a supercritical fluid providing device adapted to provide a supercritical fluid to the ceramic powder material injection device; anda mold having a molding concavity, wherein the ceramic powder material injection device is adapted to mix the ceramic powder material and the supercritical fluid to form a mixed material and inject the mixed material into the molding concavity.2. The injection molding apparatus according to claim 1 , comprising a pipe and a pressure sensing element claim 1 , wherein the pipe is connected between the ceramic powder material injection device and the supercritical fluid providing device claim 1 , the supercritical fluid providing device is adapted to provide the supercritical fluid to the ceramic powder material injection device via the pipe claim 1 , and the pressure sensing element is arranged at the pipe.3. The injection molding apparatus according to claim 1 , wherein the supercritical fluid providing device comprises a gas pressurizing unit claim 1 , and the gas pressurizing unit is adapted to pressurize a gas to form the supercritical fluid.4. The injection molding apparatus according to claim 1 , wherein the supercritical fluid ...

EFFICIENT WETTING AGENT BY USING A SUPPORT MATERIAL

A wetting agent composition may include (i) a wetting agent selected from the group consisting of anionic, cationic, nonionic wetting agents and a combination of these wetting agents, and (ii) a pulverulent carrier. A dry mixture may include such a wetting agent composition and at least one mineral binder, as may a wet mixture obtainable by mixing the dry mixture with water. 1. A wetting agent composition , comprising(I) an anionic wetting agent, cationic wetting agent, and/or a nonionic wetting agent; and(ii) a pulverulent carrier.2. The composition of claim 1 , wherein the nonionic wetting agent is present and optionally comprises: {'br': None, 'sub': 2', '2', 'x, 'HO(CHCHO)—H,'}, '(i) a polyethylene glycol of a formula'}wherein 3≤x≤210; {'br': None, 'sub': 2', '2', 'x', '2', '3', 'y', '2', '2', 'z, 'HO(CHCHO)—(CHCH(CH)O)—(CHCHO)H,'}, '(ii) a block copolymer comprising, in polymerized form, ethylene oxide and propylene oxide, of a formula'} 1≤y≤100,', '1≤z≤100; and/or, 'wherein 1≤x≤100,'} {'br': None, 'sub': 2', '2', 'x', '2', '3', 'y, 'RO(CHCHO)—(CHCH(CH)O)—H,'}, '(iii) a fatty alcohol alkoxylate of a formula'} 0≤y≤80, and', {'sub': 8-18', '8-18, 'R is C-alkyl or C-alkenyl with 1, 2, or 3 double bonds.'}], 'wherein 2≤x≤80,'}4. The composition of claim 1 , wherein the wetting agent is a fatty alcohol alkoxylate of a formula{'br': None, 'sub': 2', '2', 'x', '2', '3', 'y, 'RO(CHCHO)—(CHCH(CH)O)—H,'}wherein2≤x≤80,y is 0,{'sub': 8-18', '8-18, 'R is C-alkyl or C-alkenyl with 1, 2, or 3 double bonds.'}5. The composition of claim 1 , wherein the carrier is an inorganic material.6. The composition of claim 1 , wherein the carrier comprises a silicon dioxide claim 1 , silicate claim 1 , aluminosilicate claim 1 , alkaline earth metal carbonate claim 1 , alkaline earth metal phosphate claim 1 , and/or pulverulent amorphous rock melt.7. The composition of claim 1 , wherein the carrier comprises an alkaline earth metal carbonate claim 1 , alkaline earth metal phosphate claim 1 ...

ADDITIVE CONTAINING A SUPERPLASTICIZER AND A COPOLYMER

The present invention relates to admixtures, especially a dispersant for solid particles, in particular a dispersant for mineral binder compositions, comprising: 1. An admixture , especially a dispersant for solid particles , in particular a dispersant for mineral binder compositions , comprising:a) a superplasticizer andb) a copolymer having a polymer backbone and side chains bonded thereto, comprising at least one ionizable monomer unit M1 and at least one side chain-bearing monomer unit M2, wherein the copolymer has a nonrandom distribution of the monomer units M1 and/or the monomer units M2 in a direction along the polymer backbone,and wherein the superplasticizer and the copolymer differ from a chemical and/or structural point of view.2. The admixture as claimed in claim 1 , wherein the superplasticizer is a comb polymer having a polycarboxylate backbone and polyether side chains claim 1 , wherein the polyether side chains are bonded to the polycarboxylate backbone via ester claim 1 , ether claim 1 , amide and/or imide groups.6. The admixture as claimed in claim 1 , wherein the copolymer is a block copolymer claim 1 , wherein the ionizable monomer units M1 are present essentially in at least one first block A and the side chain-bearing monomer units M2 essentially in at least one second block B.7. The admixture as claimed in claim 1 , wherein the copolymer has a gradient structure in at least one section AA in a direction along the polymer backbone with respect to the ionizable monomer unit M1 and/or with respect to the side chain-bearing monomer unit M2.8. The admixture as claimed in claim 7 , wherein the copolymer claim 7 , in addition to the at least one section AA having a gradient structure claim 7 , has a further section AB claim 7 , wherein there is essentially a constant local concentration of the monomers and/or a random distribution of the monomers over the entire section AB.9. The admixture as claimed in claim 1 , wherein the polydispersity of the ...

SURFACE CRACK FILLER COMPOUND

Disclosed herein are concrete and asphalt crack filler compounds and methods for utilizing them. According to some embodiments, the crack filler compounds can include () silica sand, () ethylene vinyl acetate, () and cement, and/or () color additives. According to some embodiments, a method of utilizing one of the compounds can include the steps of () obtaining a surface crack filler compound, () depositing the surface crack filler compound into a surface crack (e.g., concrete, asphalt, etc.), and () depositing water onto the surface crack filler compound to cause the surface crack filler compound to solidify and fill the surface crack. Additionally, and according to some embodiments, the method can further include, prior to depositing the surface crack filler compound into the surface crack: removing debris from the surface crack using at least one of a brush, pressurized air, or pressurized water. 1. A method for filling a concrete crack that has formed in a concrete installation , the method comprising:obtaining a concrete crack filler compound;depositing the concrete crack filler compound into the concrete crack; anddepositing water onto the concrete crack filler compound to cause the concrete crack filler compound to solidify and fill the concrete crack.2. The method of claim 1 , wherein the concrete crack filler compound is composed of:silica sand;ethylene vinyl acetate; andcement.3. The method of claim 2 , wherein the silica sand is sized in accordance with a ninety grit rating.4. The method of claim 2 , wherein ratios of the silica sand claim 2 , the ethylene vinyl acetate claim 2 , and the cement in the concrete crack filler compound can range from:84% to 97% silica sand;2% to 10% ethylene vinyl acetate; and1% to 6% cement.5. The method of claim 1 , further comprising claim 1 , prior to depositing the concrete crack filler compound into the concrete crack:removing debris from the concrete crack using at least one of a brush, pressurized air, or pressurized ...

ASPHALT PACKETS, ASPHALT MIXTURE SYSTEMS AND RELATED METHODS

Asphalt packets and methods of making and using asphalt packets are provided. For example, an asphalt packet can be provided that include asphalt that comprises an inner volume and a polymer film outer coating that encapsulates the inner volume of the asphalt. The polymer film outer coating can be non-tacky at ambient temperatures to permit stacking of a plurality of asphalt packets under weight without causing the packets to agglomerate. 1. An asphalt forming process , the asphalt forming process comprising:providing an appropriate aggregate gradation; asphalt that comprises an inner volume;', 'a polymer film outer coating that encapsulates the volume of the asphalt, the polymer film outer coating being non-tacky at ambient temperatures that permits stacking of a plurality of asphalt packets under weight without causing the packets to agglomerate;', 'the polymer film outer coating and the volume of asphalt having a size and shape to create a surface-to-volume ratio that permits the melting of the polymer film outer coating and the asphalt into a liquid form when heated to between about 260° F. and about 340° F. before the asphalt begins to degrade;, 'providing a plurality of asphalt packets having non-tacky outer surfaces, each of the asphalt packets comprisingproviding a rotatable asphalt mixer and a heat source for heating contents placed in the rotatable asphalt mixer;inserting the aggregate gradation into the rotatable asphalt mixer;inserting the plurality of asphalt packets into the rotatable asphalt mixer;heating the aggregate gradation and the plurality of asphalt packets to temperatures of between about 260° F. and about 340° F. to permit the asphalt packets to melt and coat the aggregate uniformly as the aggregate reaches a maximum mix temperature, and prior to degradation of the asphalt of the asphalt packets.2. The asphalt forming process according to claim 1 , wherein the heating the aggregate gradation and the plurality of asphalt packets comprises ...

POLYMER BLENDS IN THE FORM OF AQUEOUS DISPERSIONS OR POWDERS THAT CAN BE REDISPERSED IN WATER

Highly condensed silicon resins are obtained by a three step continuous procedure without the use of organic solvent, by preliminarily forming a partial alkoxylate by reacting a chlorosilane with alcohol containing no or a minimal amount of water, feeding the partial alkoxylate to a reaction column to form a silicone resin of low degree of condensation, and further condensing the silicone resin intermediate thus formed to produce a silicone resin product. 111.-. (canceled)12. A polymer mixture in the form of an aqueous dispersion or water-redispersible powder , comprising:A) one or more protective colloid-stabilized polymers having units derived from 20% to 30% by weight of vinyl chloride, 50% to 75% by weight of vinyl acetate, 5% to 20% by weight of ethylene, and optionally one or more further additional ethylenically unsaturated monomers, where the figures in % by weight are based on the total weight of the monomers and add up to 100% by weight, andB) one or more protective colloid-stabilized, vinyl halide-free polymers of one or more ethylenically unsaturated monomers.13. The polymer mixture of claim 12 , wherein one or more protective colloids comprise partly hydrolyzed or fully hydrolyzed polyvinyl alcohols;polyvinylpyrrolidones; polyvinyl acetals; polysaccharides in water-soluble form; proteins;lignosulfonates; poly(meth)acrylic acid; copolymers of (meth)acrylates with carboxy-functional comonomers units; poly(meth)acrylamide; polyvinylsulfonic acids and the water-soluble copolymers thereof; melamine formaldehydesulfonates; naphthalene formaldehydesulfonates;styrene-maleic acid, or vinyl ether-maleic acid copolymers.14. The polymer mixture of claim 12 , wherein the polymer mixtures comprise 5% to 95% by weight of one or more polymers A) claim 12 , based on the dry weight of polymers A) and B).15. The polymer mixture of claim 13 , wherein the polymer mixtures comprise 5% to 95% by weight of one or more polymers A) claim 13 , based on the dry weight of polymers ...

TWO COMPONENT SYNTHETIC WATER RETENTION AGENT AND RHEOLOGY MODIFIER FOR USE IN CEMENTS, MORTARS AND PLASTERS

The present invention provides compositions useful as a replacement for cellulose ether in cement, plaster or mortar compositions comprising i) nonionic or substantially nonionic vinyl or acrylic brush polymers having pendant or side chain polyether groups, and having a relative weight average molecular weight of from 140,000 to 50,000,000 g/mole, and ii) aromatic cofactors containing one or more phenolic groups, such as catechol tannins, phenolic resins, polyphenolics, and napthhols or, in combination, one or more aromatic groups with at least one sulfur acid group, such as naphthalene sulfonate aldehyde condensate polymers, poly(styrene-co-styrene sulfonate) copolymers, and lignin sulfonates, preferably branched cofactors, including phenolic resins, aldehyde condensate polymers and lignin sulfonates. The compositions may comprise a dry powder blend of i) and ii), one dry powder of both i) and ii), or an aqueous mixture. 1. A composition useful as a replacement for cellulose ether in cement , plaster or mortar compositions comprising i) one or more nonionic or substantially nonionic vinyl or acrylic brush polymers having pendant or side chain polyether groups , and having a relative weight average molecular weight of from 140 ,000 to 50 ,000 ,000 g/mole , and ii) one or more aromatic cofactors containing one or more phenolic groups or , in combination , one or more aromatic groups with at least one sulfur acid group.2. The composition as claimed in claim 1 , wherein the weight ratio of the total amount of i) brush polymer solids to the total amount of ii) aromatic cofactor solids ranges from 1:0.5 to 1:10.3. The composition as claimed in claim 1 , wherein the ii) one or more aromatic cofactor is chosen from a naphthalene sulfonate aldehyde condensate polymer claim 1 , a poly(styrene-co-styrene sulfonate) copolymer claim 1 , lignin sulfonate claim 1 , catechol tannins claim 1 , phenolic resins claim 1 , polyphenolics claim 1 , napthhol claim 1 , and mixtures thereof ...

Fast Wetting Agent For Dry-mix Applications

A particulate wetting and hydrophobing additive comprising components a) and b), where: component a) is a disiloxane having structure (I) Where Ris selected from a branched or linear hydrocarbon group of 2 to 10 carbons, a substituted branched or substituted linear hydrocarbon group of 2 to 10 carbons, an aryl group, a substituted aryl group and an optionally substituted alkyl hydrocarbon group of 4 to 9 carbons containing aryl substituents of 6 to 20 carbons; R, R, Rand Rare each independently selected from the monovalent hydrocarbon groups of 1 to 4 carbons, substituted monovalent hydrocarbon groups of 1 to 4 carbon atoms, aryl, and a hydrocarbon group of 6 to 20 carbons containing an aryl group; Z is a linear or branched divalent hydrocarbon radical of 1 to 10 carbon atoms and Ris selected from OH, H, monovalent hydrocarbon groups of 1 to 6 carbons and acetyl, each of the sub scripts a, b and c are zero or positive provided that a+b+c≧1; and component b) is a carrier. 2. A particulate wetting and hydrophobing additive in accordance with wherein R claim 1 , R claim 1 , Rand Rare each independently selected from monovalent hydrocarbon groups of 1 to 4 carbons claim 1 , monovalent hydrocarbon groups of 1 to 4 carbons and at least one C—F bond claim 1 , aryl claim 1 , an optionally substituted hydrocarbon group of 6 to 20 carbons containing an aryl group;{'sup': 2', '1', '3, 'Ris selected from a branched or linear hydrocarbon group of 2 to 10 carbons, an optionally substituted aryl group, and an alkyl hydrocarbon chain of 4 to 9 carbons having one or more aryl substituents of 6 to 20 carbons or a branched or linear hydrocarbon group of 2 to 6 carbons when Rand Rare independently an aryl group, or a hydrocarbon group of 6 to 20 carbons containing an aryl group;'}{'sup': '8', 'Z is a linear or branched divalent hydrocarbon radical of 2 to 10 carbons and Ris selected from OH, H, monovalent hydrocarbon radicals of from 1 to 6 carbons and acetyl and each of the subscripts ...

Novel Chemical Substitutions for Portland Cement Mixtures and Applications Therefor

Embodiments of the invention enhance the performance of concrete mixtures, and have the flexibility to be used in both a variety of traditional poured concretes, as well as in sprayed concrete applications and geotechnical solutions which is commonly considered a cement application. It is an aspect of the present invention to provide a cementitious material comprising fly ash, wollastonite and nepheline syenite which is flexible enough in nature and chemistry to be used in a variety of concrete application which are poured and sprayed, as well as in blended into and within traditional cement applications. The use of a graduated blend of mineral fibers and industrial minerals also provide marked benefits to reduce both project cost and environmental impact. 1. A dry cementitious mixture comprising:stone, sand, Portland cement, fly ash and mineral fibers mixed together to produce a dry cementitious mixture having roughly uniform ingredient distribution and a total weight, whereina weight of the stone is between 40 and 50% of the total weight;a weight of the sand is between 30 and 40% of the total weight;a weight of the Portland cement is between 10 and 15% of the total weight;a weight of the fly ash is between 5 and 10% of the total weight; anda weight of the mineral fibers is between 0.5 and 2% of the total weight, the mixture further comprising:wollastonite as a portion of the fly-ash component, a weight of the wollastonite being between 1% and 7.5% of the total weight, and whereinsaid wollastonite made up of at least one grade of powder-type wollastonite and at least one grade of anisotropic-type wollastonite particles.2. The dry cementitious mixture of claim 1 , wherein:a weight of the stone is between 45 and 50% of the total weight;a weight of the sand is between 30 and 35% of the total weight;a weight of the Portland cement is between 10 and 12% of the total weight;a weight of the fly ash is between 5 and 8% of the total weight;a weight of the mineral fibers is ...

CALCIUM CARBONATE COMPOSITION FOR USE IN CONCRETE

A composition for use in concrete may generally comprise, based on total dry weight percent of the composition: at least 50% calcium carbonate and magnesium carbonate; 1-40% pozzolan; up to 3% calcium oxide; up to 2% plasticizer; up to 5% metal salt; and balance of incidental impurities. Methods of making and using the same are also described. 1. A composition for use in concrete comprising , based on total dry weight percent of the composition:at least 50% calcium carbonate and magnesium carbonate;1-40% pozzolan;up to 3% calcium oxide;up to 2% plasticizer;up to 5% metal salt; andbalance of incidental impurities.2. The composition of comprising claim 1 , based on total dry weight percent of the composition:60 to 99% calcium carbonate and magnesium carbonate;1-20% pozzolan;up to 1% calcium oxide;up to 1% plasticizer;up to 2.5% sodium silicate; andbalance of incidental impurities.3. The composition of consisting of claim 1 , based on total dry weight percent of the composition:60 to 99% calcium carbonate and magnesium carbonate;8-12% pozzolan;greater than zero and less than 1% calcium oxide;up to 1% plasticizer;up to 2.5% sodium silicate; andbalance of incidental impurities.4. A cementitious mixture comprising claim 1 , based on total volume of the mixture: at least 50% calcium carbonate and magnesium carbonate,', '1-40% pozzolan,', 'up to 3% calcium oxide; up to 2% plasticizer,', 'up to 5% metal salt, and', 'balance of incidental impurities;, '0.5 to 10% of a composition for use in concrete comprising, based on total dry weight percent of the composition'}2 to 30% cement;50 to 85% aggregate;10 to 25% water; andoptionally 4 to 8% air.5. The cementitious mixture of comprising claim 4 , based on total volume of the mixture:0.6 to 6% of the composition for use in concrete;5 to 20% cement;60 to 75% aggregate;10 to 20% water; andoptionally 4 to 8% air.6. The cementitious mixture of comprising claim 4 , based on total volume of the mixture:2 to 4% of the composition for use ...

BITUMEN WHICH IS SOLID AT AMBIENT TEMPERATURE

Bitumen pellets including a core and a coating layer, in which: the core includes at least one bitumen base, and the coating layer includes at least one fumed silica compound. Process for manufacturing bitumen pellets and also their use as road binder, in particular for the manufacture of bitumen mixes. Process for manufacturing bitumen mixes from bitumen pellets and also a process for transporting and/or storing and/or handling bitumen pellets. 116-. (canceled)17. A bitumen pellet comprising a core and a coating layer , wherein:the core comprises at least one bitumen base and at least one chemical additive chosen from: an organic compound, a paraffin, a polyphosphoric acid, and mixtures thereof, andthe coating layer comprises at least one fumed silica compound.18. The pellet as claimed in claim 17 , wherein the fumed silica compound has a specific surface area of between 25 and 420 m/g.19. The pellet as claimed in claim 18 , wherein the fumed silica compound has a specific surface area between 90 and 300 m/g.20. The pellet as claimed in claim 19 , wherein the fumed silica compound has a specific surface area between 120 and 280 m/g.21. The pellet as claimed in claim 17 , wherein the fumed silica compound has a mean particle size of between 5 and 50 nm.22. The pellet as claimed in claim 17 , wherein the fumed silica compound has a pH of between 3 and 10 claim 17 , when it is in the aqueous phase.23. The pellet as claimed in claim 17 , wherein the fumed silica compound has a carbon content of between 0.1% and 10% by weight claim 17 , relative to the total weight of the fumed silica compound.24. The pellet as claimed in claim 17 , wherein the fumed silica compound is a fumed silica.25. The pellet as claimed in claim 17 , wherein the fumed silica compound is chosen from a hydrophilic fumed silica compound claim 17 , a hydrophobic fumed silica compound and mixtures thereof.26. The pellet as claimed in claim 25 , wherein the fumed silica compound is a hydrophilic fumed ...

CELLULAR CONCRETE WET MIX BLENDING

Cellular concrete is formed from a cement-based wet mix slurry with a foam entrained into the wet mix. The foam is created using a foaming agent, mixed with water and air using a foam generator. The wet mix is mixed with the foam to form the cellular concrete wet mix. Poor component metering and blending practices in the current state of the art limits the performance capabilities of existing cellular concrete placements. The presently disclosed technology addresses this with a cellular concrete mixing system comprising a dry mix hopper to store a quantity of dry mix, a mixing tank to blend the dry mix and water together to form a wet mix, a holding tank to store a quantity of the wet mix, a foam generator to generate foam from air, water, and foam concentrate, and a blend controller to control operation of the overall mixing system. 1. A cellular concrete wet mixing system comprising:a dry mix hopper to store a quantity of dry mix;a mixing tank to blend the dry mix and water together to form a wet mix;a holding tank to store a quantity of the wet mix;a foam generator to generate foam from air, water, and foam concentrate; control a fill state of the dry mix hopper between a maximum and a minimum level;', 'define a blending proportion of the dry mix and the water within the mixing tank;', 'control a fill state of the mixing tank between a maximum and a minimum level;', 'control a fill state of the holding tank between a maximum and a minimum level; and', 'define a blending proportion of the wet mix and the foam combined in-line to generate a foamed wet mix., 'a blend controller to2. The cellular concrete wet mixing system of claim 1 , wherein the foam generator uses a combination of mass-flow metered air claim 1 , volumetrically metered water claim 1 , and volumetrically metered foam concentrate to generate the foam.3. The cellular concrete wet mixing system of claim 1 , further comprising:a static mixer oriented in line with a combined stream of the foam and the ...

DRY COMPOSITION FOR AN INTERIOR WALL COVERING

A dry composition for a wall covering for interior walls can have a food additive as a binding agent to bind cotton and paper. The dry composition can be mixed with an appropriate amount of water and allowed to set to create a paste. The paste can then be applied to a surface of an interior wall. Once cured, the paste forms a solid layer of a decorative coating on the surface of the interior wall. A color of the decorative layer can be varied by altering the color of the cotton, color of the paper, and the addition of pigments to the paste. A texture of the decorative layer can be varied by altering the amount of cotton, and the size of the cotton pieces used in the dry composition. 1. A dry composition for the preparation of a wet composition for use as an interior wall covering consisting of a food ingredient.2. The dry composition of claim 1 , further consisting of cotton.3. The dry composition of claim 2 , further consisting of paper.4. The dry composition of claim 3 , wherein the ratio of cotton:paper:food ingredients is 45:45:10.5. The dry composition of claim 3 , wherein the ratio of cotton:paper:food ingredienst is 70:20:10.6. The dry composition of claim 3 , wherein the ratio of cotton:paper:food ingredients is 80:10:10.7. The dry composition of claim 1 , wherein the food ingredient is one of calcium citrate malate claim 1 , corn starch claim 1 , flour or cellulose gum.8. The dry composition of claim 6 , wherein the food ingredient is cellulose gum.9. A method of applying the composition of claim 1 , consisting the steps of:mixing the dry composition with water for creating a paste;allowing the paste to set to an appropriate consistency for application onto a surface of an interior wall; andapplying the paste onto the surface of the interior wall for forming a decorative wall covering.10. The method of claim 9 , wherein mixing the dry composition with water further consists of adding 3 to 6 liters volume of water and mixing it with 1 kilogram amount of the ...

ADDITIVE PACK

An additive pack which comprises a water-soluble capsule containing a water-dispersible polymer powder (dispersion powder) is used to prepare aqueous construction materials such as cements and mortars on site, while offering set properties equivalent or superior to ready to mix dry mix formulations. 113.-. (canceled)14. An additive pack which comprises a water-soluble capsule and a water-dispersible polymer powder contained therein.15. The additive pack of claim 14 , wherein the water-soluble capsule comprises a cold-water-soluble or warm-water-soluble polymer film.16. The additive pack of claim 14 , wherein the water-soluble capsule comprises a partially hydrolyzed vinyl acetate homopolymers or partially hydrolyzed vinyl acetate copolymer claim 14 , each with a degree of hydrolysis of from 70 to 95 mol % claim 14 , and a Hoppler viscosity of from 1 to 50 mPas claim 14 , or a mixture thereof.17. The additive pack of claim 16 , wherein the partially hydrolyzed vinyl acetate copolymers comprise copolymers of vinyl acetate with 1 to 50% by weight of one or more comonomers selected from the group consisting of ethylenically unsaturated carboxylic acids and 1-alkylvinyl acetates having C- to C-alkyl groups.18. The additive pack of claim 17 , wherein the partially hydrolyzed vinyl acetate copolymers comprise copolymers of from 80 to 95% by weight of vinyl acetate claim 17 , from 5 to 20% by weight of isopropenyl acetate claim 17 , and from 0 to 5% by weight of other ethylenically unsaturated copolymerizable monomers claim 17 , where the total of the percents by weight is 100% claim 17 , and the copolymers have a degree of hydrolysis of from 80 to 90 mol % and a Hoppler viscosity of from 5 to 30 mPas.19. The additive pack of claim 14 , wherein the water-dispersible polymer powders comprise polymers of one or more vinyl esters of unbranched or branched carboxylic acids having from 1 to 12 C atoms claim 14 , acrylic esters or methacrylic esters of unbranched or branched ...

Setting accelerator for a dry mortar blend, process for producing such a setting accelerator, a dry mortar blend and a mortar paste

The invention relates to a setting accelerator for a dry mortar blend, the setting accelerator being in the form of a powder comprising calcium nitrate and having a water content between 0.1% and 20%. The invention furthermore relates to a process for producing such a setting accelerator, wherein either prills and/or granules comprising calcium nitrate and a different nitrate salt are processed forming a powder comprising calcium nitrate and the different nitrate salt and having a water content of higher than 5% and lower than 20%, either an aqueous solution at least comprising dissolved calcium nitrate is spray dried at a temperature between 150° C. and 250° C., forming a powder comprising at least calcium nitrate and having a water content between 0.1% and 20%, the powder serving as the setting accelerator. The invention also relates to a dry mortar blend comprising at least a cement, sand and a setting accelerator according to the invention and to a mortar paste comprising the dry mortar blend according to the invention which is mixed with water.

PROCESS FOR PRODUCING WATER-REDISPERSIBLE POLYMER POWDER COMPOSITIONS HAVING CATIONIC FUNCTIONALITY

Water-redispersible polymer powder compositions having cationic functionality are prepared by radically polymerizing one or more ethylenically unsaturated monomers in the presence of a protective colloid and/or emulsifier in an aqueous medium, and drying the resulting aqueous polymer dispersion after addition of a catonic protective colloid as a drying aid, the cationic protective colloid comprising a homopolymer or copolymer of one or more cationic monomers having a quaternary ammonium halide group, with 50 wt % to 100 wt % of the halide ions in the quaternary ammonium halide groups having been replaced by nonhalide anions, and with the fraction of halide ions being less than 1 wt %, based on the total weight of the polymer powder composition. 110.-. (canceled)11. A process for producing a water-redispersible polymer powder composition having cationic functionality , comprising radically polymerizing one or more ethylenically unsaturated monomers in the presence of a protective colloid and/or emulsifier in an aqueous medium , and drying the resulting aqueous polymer dispersion after addition of a catonic protective colloid as a drying aid , wherein the cationic protective colloid comprises homopolymers or copolymers of one or more cationic monomers having a quaternary ammonium halide group , with 50 wt % to 100 wt % of halide ions in the quaternary ammonium halide groups having been replaced by nonhalide anions , and with the fraction of halide ions being less than 1 wt % , based on the total weight of the polymer powder composition.12. The process of claim 11 , wherein at least one cationic protective colloid comprises homopolymers or copolymers of one or more cationic monomers selected from the group consisting of diallyldimethylammonium chloride claim 11 , diallyldiethylammonium chloride claim 11 , (3 -methacryloyloxy)propyltrimethylammonium chloride claim 11 , (2-methacryloyloxy)ethyltrimethylammonium chloride claim 11 , (3 -methacrylamido)propyltrimethyl - ...

SiOC Ceramic and Plastic Additives for Cements, Concretes and Structural Decorative Materials

Cement, concrete, stucco, and plaster that are have black ceramic polymer derived pigments, and in embodiments have a uniform blackness throughout the structure. In embodiments the black pigment is a ceramic SiOC, that has a size of about 0.8 μm. 1. A black cement comprising a dry powdered cement and a black SiOC ceramic pigment.2. The cement of claim 1 , comprising about 6% to about 15% black SiOC ceramic pigment.3. The cement of claim 2 , comprising at least about 8% black SiOC ceramic pigment.4. The cement of claim 2 , comprising at least about 10% black SiOC ceramic pigment.5. The cement of claim 1 , wherein the black SiOC ceramic pigment comprises from about 30 weight % to about 60 weight % silicon claim 1 , from about 5 weight % to about 40 weight % oxygen claim 1 , and carbon; wherein about 20 weight % to about 80 weight % of the carbon is free carbon.6. The cement of claim 1 , wherein the black SiOC ceramic pigment comprises from about 20% to about 65% Si claim 1 , about 5% to about 50% 0 claim 1 , and about 3% to about 55% carbon weight percent.7. The cement of claim 1 , wherein the black SiOC ceramic pigment comprises from about 15.3 mole % to about 63.1 mole % silicon claim 1 , from about 8.8 mole % to about 56.8 mole % oxygen claim 1 , and at least about 6.3 mole % carbon and wherein about 20 weight % to about 80 weight % of the carbon is silicon-bound-carbon.8. (canceled)9. A black concrete comprising a dry powdered cement claim 1 , aggregate and a black SiOC pigment.10. (canceled)11. The concrete of claim 9 , comprising at least about 8% ceramic pigment to cement.12. (canceled)13. The concrete of claim 9 , wherein the black SiOC ceramic pigment comprises from about 30 weight % to about 60 weight % silicon claim 9 , from about 5 weight % to about 40 weight % oxygen claim 9 , and carbon; wherein about 20 weight % to about 80 weight % of the carbon is free carbon.14. The concrete of claim 9 , wherein the black SiOC ceramic pigment comprises from about 20% ...

ACCELERATOR FOR MINERAL BINDER COMPOSITIONS

An additive for mineral binder composition, in particular accelerators for mineral binder compositions, in particular cementitious binder compositions. The accelerator includes 35 to 99.7 w % of at least one mineral filler F with a particle size D50<5 μm, preferably <4 μm, most preferred <3.5 μm, 0.3 to 65 w % of a sodium aluminate SA, and 0 to 45 w % of at least one other inorganic compound I selected from the group consisting of calcium aluminate cements and/or sulfates of alkali or alkaline earth metals. Further, corresponding mineral binder compositions as well as uses and processes, including the acceleration of setting and curing of mineral binder compositions at low temperatures. 1. A composition comprising or consisting ofa) 35-99.7 w % of at least one mineral filler F with a particle size D50<5 μm,b) 0.3-65 w % of a sodium aluminate SA,c) 0-45 w % of at least one other inorganic compound I selected from the group consisting of calcium aluminate cements and/or sulfates of alkali or alkaline earth metals,d) optionally further additives for mineral binder compositions.2. A composition according to claim 1 , wherein the mineral filler F is selected from the group consisting of carbonates and/or hydrogencarbonates of alkali and/or alkaline earth metals.3. A composition according to claim 1 , wherein the sodium aluminate SA is NaAlO.4. A composition according to claim 1 , wherein the at least one other inorganic compound I is lithium sulfate and is comprised in 0.1-45 w % claim 1 , related to the total weight of the composition.5. A composition according to claim 1 , wherein it additionally comprises a superplasticizer claim 1 , in an amount of 0.1-10 w % claim 1 , related to the total weight of the composition.6. A process for the production of a composition according to claim 1 , wherein it comprises a step dedicated to reduce dust formation during storage claim 1 , transportation claim 1 , metering and/or dosage of the composition.7. A process according to ...

METHYL-ETHYL-HYDROXYALKYL-CELLULOSE AND ITS USE IN BUILDING COMPOSITIO

A methyl ethyl hydroxyalkyl cellulose (MEHEC), process for making the MEHEC, and a powder containing the MEHEC are disclosed. The MEHEC is provided with a DSmethyl from 1.5 to 2.5, a DSethyl from 0.005 to 0.15, and a MSalkylene-oxide from 0.005 to 0.2. The methyl ethyl hydroxyalkyl cellulose optionally includes an anti-oxidant. The MEHEC optionally does not have a combination of a DSmethyl of 2.2 or 1.8, a DSethyl of 0.05 or 0.1, and a MSalkylene-oxide of 0.1 and does not have a combination of a DSmethyl of 2.5 or 2.0, a DSethyl of 0.1, and a MSalkylene-oxide of 0.05. The MEHEC has very good biostability and is suitable for use in the building industry. 1. Methyl ethyl hydroxyalkyl cellulose with a DSmethyl from 1.5 to 2.5 , a DSethyl from 0.005 to 0.15 , and a MSalkylene-oxide from 0.005 to 0.2 , optionally comprising an anti-oxidant , whereby the methyl ethyl hydroxyalkyl cellulose optionally does not have a combination of a DSmethyl of 2.2 or 1.8 , a DSethyl of 0.05 or 0.1 , and a MSalkylene-oxide of 0.1 and does not have a combination of a DSmethyl of 2.5 or 2.0 , a DSethyl of 0.1 , and a MSalkylene-oxide of 0.05.2. The methyl ethyl hydroxyalkyl cellulose of with a DSmethyl of 1.6 or more.3. The methyl ethyl hydroxyalkyl cellulose of with a particle size such that the D10 is from about 27 to about 75 μm and the D98 is from about 200 to about 600 μm.4. The methyl ethyl hydroxyalkyl cellulose of claim 1 , having a DSmethyl claim 1 , DSethyl claim 1 , and MSalkylene-oxide that results in a dissolution speed at pH=7 and a temperature of 20° C. such that the t1 is from about 0.1 to about 0.5 minutes and the t2 is from about 1 to about 10 minutes.5. A powder mixture comprising from about 5 to about 90 percent by weight of a methyl ethyl hydroxyalkyl cellulose with a DSmethyl from 1.5 to 2.5 claim 1 , a DSethyl from 0.005 to 0.15 claim 1 , and a MSalkylene-oxide from 0.005 to 0.2.6. The powder mixture of claim 5 , being a redispersable powder suitable for use in ...

Water-Soluble Or Water-Swellable Polymers As Water Loss Reducers In Cement Slurries

This invention relates to water-soluble or water-swellable polymers, containing a) 25-35 mol. % of one or more recurrent structural units of formula (1), where Rand Rrepresent hydrogen, methyl or ethyl, A represents a linear or branched C-C-alkylene, and Qstands for NH, Li, Na, K, ½ Ca, ½ Mg, ½ Zn, ⅓ Al, or organic ammonium ions of the formula [HNRRR], b) 3 to 8 mol. % of one or more recurrent structural units of formula (2), where Rrepresents hydrogen, methyl, or ethyl, Xstands for H, NH, Li, Na, K, ½ Ca, ½ Mg, ½ Zn, ⅓ Al, or organic ammonium ions of the formula [HNRRR], B is a linear or branched alkylene group with 1 to 6 carbon atoms, and n is a whole number between 0 and 5, and c) 57 to 72 mol. % of a (meth)acrylamide. 124-. (canceled)26. The method as claimed in claim 25 , wherein the structural units of the formula (1) are derived from monomers from the group consisting of acryloyldimethyltaurate claim 25 , acryloyl-1 claim 25 ,1-dimethyl-2-methyltaurate claim 25 , acryloyltaurate claim 25 , acryloyl-N-methyltaurate.27. The method as claimed in claim 25 , wherein the structural units of the formula (2) are derived from methacrylic acid claim 25 , acrylic acid claim 25 , carboxyethyl acrylate or higher oligomers of the formula (2) in which n is an integer of 2 or more.28. The method as claimed in claim 25 , wherein the structural units of the formula (3) are derived from acrylamide claim 25 , N-methylacrylamide claim 25 , N-ethylacrylamide claim 25 , N claim 25 ,N-diethylmethacrylamide claim 25 , N claim 25 ,N-diethylacrylamide claim 25 , N claim 25 ,N--dimethylmethacrylamide claim 25 , N claim 25 ,N-dimethylacrylamide claim 25 , N-isopropylacrylamide claim 25 , N-tert-butylacrylamide and N-butylacrylamide.29. The method as claimed in claim 25 , wherein Q in formula (1) is selected from the group consisting of NH claim 25 , Na and mixtures of these ions and X in formula (2) is selected from the group consisting of H claim 25 , NH claim 25 , Na and mixtures of ...

Artificial Cement-Based Ultra-High-Performance Stone

A cement-based artificial stone plate includes a cement-based plate body; and a metal mesh being embedded in the cement-based plate body; wherein the metal mesh is arranged with at least one fixing member, the fixing member defines a screw hole along its axis, and the screw hole of the fixing member is exposed on back of the cement-based plate body, and back of the plate body is provided with regular or irregular protrusions, between any two protrusions forms a groove, and bottom of each groove is close to the metal mesh. 1. A artificial cement based ultrahigh performance stone , comprising:a cement-based plate body; anda metal mesh being embedded in the cement-based plate body;wherein the metal mesh is arranged with at least one fixing member, the fixing member defines a screw hole along its axis, and the screw hole of the fixing member is exposed on back of the cement-based plate body, and back of the cement-based plate body is provided with regular or irregular protrusions, between any two protrusions forms a groove, and bottom of each groove is close to the metal mesh.2. The artificial cement based ultrahigh performance stone of claim 1 , wherein thickness of the cement-based plate body is in a range of 5-25 mm.3. The cement-based ultra-high-performance artificial stone plate of claim 1 , wherein the metal mesh is stainless steel mesh claim 1 , and the fixing member is a stainless steel nut.4. The artificial cement based ultrahigh performance stone of claim 1 , wherein opening the screw hole of the fixing member is not less than back of the cement-based plate body in a range of 0-4 mm.5. The artificial cement based ultrahigh performance stone of claim 4 , wherein opening the screw hole of the fixing member is level with back of the cement-based plate body.6. The artificial cement based ultrahigh performance stone of claim 1 , wherein bottom of the fixing member is provided with a wing plate around the fixing member.7. The artificial cement based ultrahigh ...

SELF-DISPERSIBLE MIXTURE SILICON ADDITIVE COMPOSITION, ITS EMULSION AND ITS USE THEREOF

A composition comprising a self-dispersible mixture additive composition comprising a alkylalkoxysilane of formula (RO)SiR′n, or its hydrolysate or mixture thereof, where, R is same or different C-C, R′ is same or different C-C; mixture of non-ionic emulsifier of HLB value between 8 and 20. The self-dispersible mixture additive composition is obtained by mixing the alkyltrialkoxysilane with a mixture of non-ionic emulsifier. The emulsion of the self-dispersible mixture additive composition is formed by mixing appropriate amount of an aqueous solvent to the self-dispersible mixture additive composition, and addition of thus formed emulsion to a porous product preferably dry cement to render uniform and long lasting hydrophobic property of the final product made of the porous product. 1. A composition comprising:a self-dispersible mixture additive composition comprising: {'br': None, 'sub': 4-n', 'n, 'i. (RO)SiR′\u2003\u2003(I)'}, 'an alkylalkoxysilane of formula (I) or its hydrolysate or mixture thereof'}where, n is any number from 1 to 3,{'sub': 1', '20, 'R is same or different and is a C-Cgroup,'}{'sub': 1', '20, 'R′ is same or different and is a C-Cgroup; and'}one or more non-ionic emulsifier of HLB value between 8 and 20 and its mixtures thereof.2. The composition as claimed in claim 1 , wherein said composition is substantially devoid of water.3. The composition as claimed in claim 1 , wherein the R′ is same or different C-Cgroup.4. The composition as claimed in claim 1 , wherein the R′ is selected from propyl claim 1 , butyl claim 1 , pentyl claim 1 , hexyl claim 1 , heptyl and octyl radical and its isomers or mixtures thereof.5. The composition as claimed in claim 1 , wherein the alkyltrialkoxysilane is selected from propyltrimethoxy silane claim 1 , propyltriethoxy silane claim 1 , octyltrimethoxy silane claim 1 , octyltriethoxy silane claim 1 , isooctyltrimethoxy silane claim 1 , isooctyltriethoxy silane or its isomers or mixtures thereof.6. The composition ...

POACEAE FIBRES AND BUILDING PRODUCTS

Chemically modified unpyrolyzed Poaceae fibres having a length of less than 200 mm advantageously comprised between 2 and 100 mm, such as between 2 and 10 mm, said fibres having a water content of less than 40% by weight, and being treated with a treating aqueous dispersion comprising less than 1% by weight of surface treating mixture comprising at least a silanol terminated polydimethylsiloxane, as well as an amino coupling agent. 1MiscanthusPennisetumZea. Chemically modified unpyrolyzed ageing resistant fibres selected from the group consisting of -like species , -like species , -like species and mixtures thereof , said fibres having a length comprised between 2 and 100 mm , said ageing resistant fibres having a water content of less than 20% by weight , said ageing resistant fibres having a coating obtained by contacting initial fibres with a treating aqueous dispersion comprising less than 1% by weight of a surface treating mixture comprising (a) OH-terminated silanol terminated polydimethylsiloxane having a molecular weight comprised between 200 and 1000 , and (b) an amino coupling agent , and drying said initial fibres contacted with the said treating aqueous dispersion;whereby said coating of said ageing resistant fibres comprises at least (a) aminosilane bound to silicon atoms present in said ageing resistant fibres and (b) polydimethylsiloxane bound to aminosilane group via a silanol group,whereby the weight ratio between said OH-terminated silanol terminated polydimethylsiloxane having a molecular weight comprised between 200 and 1000 and said amino silane coupling agent of said surface treating mixture is comprised between 5:1 and 20:1,wherein said ageing resistant fibres keeping during a storage period for 6 months in an air environment having a temperature of about 20° C. and a relative humidity of 50%, an alkali resistance in a 1 N NaOH solution for at least 28 days of more than 92%,{'sub': 2', '2', '2', '2, 'in which said ageing resistant fibres after ...

SOLID PARTICULATE CALCIUM NITRATE COMPOSITION COMPRISING A SOLID PARTICULATE SILICATE AS AN ANTI-CAKING AGENT

The invention relates to a solid particulate calcium nitrate composition having particles with an average particle size of between 0.1 and 1 mm and comprising an anti-caking agent, wherein the anti-caking agent consists of a solid particulate silicate with an average particle size of between 0.05 and 750 μm. The invention furthermore relates to a pre-blend binder composition comprising such a solid particulate calcium nitrate composition. Also a dry mortar mix or tile adhesive composition and a dry concrete mix comprising an aggregate and such a pre-blend binder composition. Also a method for producing a solid particulate calcium nitrate composition, the use of a solid particulate silicate as anti-caking agent for a solid particulate calcium nitrate composition and the use of a solid particulate calcium nitrate composition as a setting accelerator for cementitious pre-blend binder composition are disclosed. 1. A solid particulate calcium nitrate composition having particles with an average particle size of between 0.1 mm and 1 mm and comprising an anti-caking agent , CHARACTERIZED IN THAT the anti-caking agent consists of a solid particulate silicate with an average particle size of between 0.05 μm and 750 μm and wherein the solid particulate silicate is present in an amount of 0.01 weight % to 2 weight %.2. Solid particulate calcium nitrate composition according to claim 1 , wherein the solid particulate calcium nitrate composition further comprises a solid particulate anhydrous calcium nitrate and having particles with an average particle size of between 0.1 mm and 1 mm.3. Solid particulate calcium nitrate composition according to claim 1 , wherein the solid particulate calcium nitrate composition further comprises a solid particulate potassium calcium nitrate and having particles with an average particle size of between 0.1 mm and 1 mm.4. Solid particulate calcium nitrate composition according to claim 1 , wherein the solid particulate calcium nitrate composition ...

Improved manufactured natural pozzolan, improved manufactured natural pozzolan-based cement and method of making and using same

The present invention comprises a product. The product comprises a first mineral in particulate form and having a first pozzolanic reactivity and a second mineral in particulate form and having a second pozzolanic reactivity greater than the first reactivity, wherein the surface of at least some of the particles of the first mineral is at least partially covered with particles of the second mineral. A method of making the composition of the present invention is also disclosed.

Gypsum set accelerator and method of preparing same

A modified gypsum set accelerator and a method of preparing the same is provided, which includes dry loose finely ground particles of a mixture of ground dry calcium sulfate dihydrate and a grinding aid selected from one or more of beta-naphthalene sulfonate formaldehyde condensate, trimetaphosphate phosphate salt, tripolyphosphate salt, tetra-pyrophosphate salt, and pregelatinized starch.

Environment-friendly Artificial Stone with Low Cost and High Strength and A Preparation Method Thereof

The invention relates to an environment-friendly artificial stone with low cost and high strength and a preparation method thereof, the artificial stone comprises the following raw materials in parts by mass: 60-80 parts of fritted sand; 10-30 parts of quartz powder; 9-14 parts of terephthalic unsaturated polyester resin; 0.6-1 parts of curing agent; 0.8-1 parts of coupling agent; 0.5-1 parts of pigment paste; 0.1-1 parts of pigment powder. The invention has advantages of: (1) using mine solid waste or waste materials as raw materials, and using blast-furnace gas and coke-oven gas recovered and purified in the productive process of the steel plant and coking plant as fuel, the production process is green and environment-friendly, which can recycle waste materials. (2) high strength, natural stripe, elegance appearance, green and environmental protection, and being recognized by global customers and promising in worldwide market.

Use of cellulose ether compounds for increasing the open time and improving the wettability of cement-based mortars

The present invention relates to cellulose ether compounds for increasing the open time and improving the wettability of cement-based mortars. The inventive cellulose ether compounds are formed from cellulose ether with one or more liquid antifoams incorporated therein. The inventive cellulose ether compounds are preferably used as modified cellulose ether in dry mortars for increasing the open time. 1. A method of increasing the open time and wettability of cement-based mortar comprisingincorporating at least one liquid antifoam into cellulose ether to form a compound,mixing the anti-foamed cellulose ether compound into a mortar,wherein said mortar is (i) cement-based tile adhesive having increased open time and improved wetting; (ii) cement render having increased processing time; or (iii) cement-based renders in composite thermal insulation systems having increased processing time.2. The method according to claim 1 , wherein the blending step comprises either spraying the liquid antifoam onto the cellulose ether or kneading the liquid antifoam into the cellulose ether.3. The method according to claim 2 , wherein the blending step comprises kneading the liquid antifoam into the cellulose ether.4. The method according to claim 1 , wherein the cellulose ether is hydroxyethyl cellulose claim 1 , hydroxypropyl cellulose claim 1 , methyl cellulose claim 1 , methyl hydroxypropyl cellulose claim 1 , methyl hydroxyethyl cellulose claim 1 , ethyl hydroxyethyl cellulose claim 1 , methyl ethyl hydroxyethyl cellulose claim 1 , carboxymethyl cellulose claim 1 , carboxymethyl hydroxyethyl cellulose claim 1 , carboxymethyl hydroxypropyl cellulose claim 1 , sulfoethyl methyl hydroxyethyl cellulose claim 1 , or sulfoethyl methyl hydroxypropyl cellulose.5. The method according to claim 4 , wherein the methyl cellulose has a DSof from 1.4 to 2.2; the methyl hydroxypropyl cellulose has a DSof from 1.2 to 2.2 and an MSof from 0.1 to 1.0; the methyl hydroxyethyl cellulose has a DSof ...

APPLICATION OF POLYELECTROLYTE COMPLEX NANOPARTICLES TO FLUID LOSS CONTROL OF OIL WELL CEMENTING

A variety of fluid loss control compositions and methods are provided for controlling fluid loss in a cementing operation. As described herein, polyelectrolyte complex nanoparticles and fluid loss control compositions containing polyelectrolyte complex nanoparticles can be effective for fluid loss control in a variety of cementing operations. Methods of making and methods of using the electrolyte complex nanoparticles and fluid loss control compositions containing polyelectrolyte complex nanoparticles are also provided. The polyelectrolyte complex nanoparticles can include a polycation polymer such as a branched chain polyethylenimine, and a polyanion polymer such as polyacrylic acid or poly(vinylsulfonic) acid. The polyelectrolyte complex nanoparticles can contain additional additives such as metal ions or fluid loss additives such as a cellulose polymer. 1. A fluid loss control composition comprising polyelectrolyte complex nanoparticles formed of at least the following components:(i) a polycation polymer, and(ii) a polyanion polymer; and(iii) optionally a fluid loss additive.2. (canceled)3. The fluid loss control composition according to claim 1 , wherein the fluid loss additive is a cellulose polymer.4. The fluid loss control composition according to claim 1 , wherein the cellulose polymer is carboxymethyl hydroxyethyl cellulose having a molecular weight of about 60 kDa to about 100 kDa.5. (canceled)6. The fluid loss control composition according to claim 1 , wherein the fluid loss control composition further comprises a plurality of metal ions.7. The fluid loss control composition according to claim 6 , wherein the plurality metal ions comprise chromium ions claim 6 , zirconium claim 6 , titanium claim 6 , aluminum ions claim 6 , or a combination thereof.8. The fluid loss control composition according to claim 1 , wherein the polycation polymer comprises a plurality of amine functional groups.9. The fluid loss control composition according to claim 1 , wherein ...

ANTI-DUST ADDITIVE COMPOSITION FOR CONSTRUCTION MATERIAL

An anti-dust additive composition for industrial mortars, dry coatings, cements and tile adhesives, includes at least a hydrocarbon fluid, a surfactant and 0.01% to 5% wt of water, preferably from 0.01% to 2% wt, more preferably from 0.01% to 1% wt and even more preferably from 0.05% to 0.5% wt of water. A process of preparation of construction material includes the step of adding the anti-dust additive composition to a material powdery binder. The use of the anti-dust additive composition for decreasing the dust emission during the fabrication of construction material with a material powdery binder and/or during the use of the construction material is also disclosed. 1. An anti-dust additive composition for industrial mortars , dry coatings , cements and/or tile adhesives , comprising at least a hydrocarbon fluid selected from a group consisting of hydrotreated hydrockracked hydrocarbon fluid and hydrotreated hydrodewaxed hydrocarbon fluid , alone or in combination , a surfactant and from 0.01% to 5% wt of water.2. The anti-dust additive composition according to claim 1 , wherein the hydrocarbon fluid comprises at least one hydrotreated hydrodewaxed hydrocarbon fluid.3. The anti-dust additive composition according to claim 1 , wherein the hydrocarbon fluid is a dearomatised and/or desulfurized hydrocarbon fluid.4. The anti-dust additive composition according to claim 1 , wherein the hydrocarbon fluid is originated from crude oil and/or biomass.5. The anti-dust additive composition according to claim 1 , wherein the hydrocarbon fluid has a distillation range comprised between 230° C. and 410° C. claim 1 , according to ASTM D86.6. The anti-dust additive composition according to claim 1 , wherein the hydrocarbon fluid has a kinematic viscosity at 40° C. comprised between 2 and 22 mm/s claim 1 , according to ASTM D445.7. The anti-dust additive composition according to claim 1 , wherein the hydrocarbon fluid contains less than 0.1% wt of aromatics claim 1 , measured by ...

GYPSUM-BASED INVESTMENT MATERIAL COMPOSITION FOR CASTING, AND METHOD FOR MANUFACTURING GYPSUM-BASED INVESTMENT MATERIAL COMPOSITION FOR CASTING

The present invention intends to provide a gypsum-based embedding material composition for casting, the composition being useful as a rapid-heating type gypsum-based embedding material making it possible to provide a product with which leaving time is made short, which has never been realized in conventional products, and also intends to provide a method for producing the same. A gypsum-based embedding material composition for casting, the composition being a gypsum-based powdery embedding material composition for casting to be used for a rapid-heating type embedding material, the gypsum-based powdery embedding material composition being such that a set product is put into a high-temperature furnace, the set product obtained by adding a malaxation liquid into the composition to perform malaxation and then setting a resultant mixture, wherein the gypsum-based embedding material composition for casting contains as main components calcined gypsum, quartz, and cristobalite, and contains at least one co-pulverized material selected from a co-pulverized material of calcined gypsum and quartz, a co-pulverized material of calcined gypsum and cristobalite, or a co-pulverized material of calcined gypsum, quartz, and cristobalite, and a powdery moisture-retaining component or a liquid moisture-retaining component having a low water content, the composition having an average particle diameter of 30 μm or less, and a method for producing the same. 1. A gypsum-based embedding material composition for casting , the composition being α gypsum-based powdery embedding material composition for casting to be used for a rapid-heating type embedding material , the gypsum-based powdery embedding material composition for casting being such that a malaxation liquid is added into the composition to perform malaxation , a resultant mixture is then set , and a set product is put into a high-temperature furnace , whereinthe gypsum-based embedding material composition for casting comprises as ...