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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 11. Отображено 11.
14-04-2022 дата публикации

METHOD FOR PREPARING ADMIXTURE FOR GYPSUM BOARD, ADMIXTURE PREPARED THEREBY, AND COMPOSITION FOR FORMING GYPSUM BOARD, COMPRISING ADMIXTURE

Номер: WO2022075617A1
Автор: CHOI, Gwang Ho, KIM, Ju Hwan, JU, Young Gil, PARK, Kwang Young, CHA, Cheol Yong, PAIK, Hyun Jong, MOHANTY, Aruna Kumar, KWON, Min Ho, KIM, Han Young, JEON, Heung Bae, JOO, Hong Il, JANG, Dong Sik, CHANG, Tai Hyun
Принадлежит:

The present invention relates to: a method for preparing an admixture for a gypsum board; an admixture for a gypsum board, prepared thereby; and a composition for forming a gypsum board, comprising the admixture. Specifically, the aim of the present invention is to provide a technique that can control the physical properties, such as flowability and setting time, of a gypsum slurry by adjusting the degree of sulfonation (DS) of a sulfonated polystyrene (SPS)-based compound or an SPS-based polymer compound or adjusting the type and degree of polymerization of monomers contained in the polymer compound.

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Номер записи: 1
16-05-2017 дата публикации

CRACK-REDUCING CONCRETE ADMIXTURE

Номер: KR101735773B1
Автор: KIM, BO SEUNG, PARK, KWANG SEO, KIM, JUNG SUN, PARK, KWANG YOUNG, CHA, CHEOL YONG
Принадлежит: SILKROAD C&T

Disclosed is a crack-reducing concrete admixture capable of reducing interfacial tension between water and a concrete surface to prevent cracks of a concrete caused by dry-type shrinkage. More specifically, the crack-reducing concrete admixture comprises: a polycarboxylate ether-based compound; and a polyalkyl ether-based compound, wherein the polycarboxylate ether-based compound includes a copolymer including first, second, and third repeating units. The first repeating unit is derived from a compound represented by chemical formula 1, CH_2=CR_1-L_1-(CH_2CH_2O)_n1-(C=O)-R_2. The second repeating unit is derived from an unsaturated carboxylic acid, and the third repeating unit is derived from an unsaturated carboxylate. The polyalkyl ether-based compound has a hydrophile lipophile balance (HLB) of 10 to 13. The descriptions of L_1, R_1, R_2 and n1 in the chemical formula 1 are the same as described in the present specification. COPYRIGHT KIPO 2017 ...

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Номер записи: 2
16-03-2018 дата публикации

APPARATUS FOR MEASURING CONSISTENCY LIGHTWEIGHT OF FRESH CONCRETE AND METHOD FOR MEASURING CONSISTENCY OF FRESH CONCRETE USING SAME

Номер: KR1020180028082A
Автор: JU, YOUNG GIL, PARK, JONG SOO, PARK, KWANG SOE, YOON, MYONG JOONG, HAN, YONG HEE, SHIN, SEUNG BONG, PARK, KWANG YOUNG, CHA, CHUL YONG
Принадлежит:

The present invention relates to an apparatus for measuring consistency of fresh concrete, which is capable of quantifying a sticky degree of dough of fresh concrete, that is consistency, used for manufacturing factories such as pre-cast high-strength concrete (PHC) piles, poles, sleepers, box culverts, hume pipes, channels, and the like as well as general concrete for construction/civil engineering structures, and allowing quantitative measurement, and to a method for measuring consistency of fresh concrete using the same. The apparatus for measuring consistency of fresh concrete comprises: a lower plate; an upper plate; an elastic support installed between the upper and lower plates such that the upper plate is spaced apart in parallel with the lower plate; a cylindrical container coupled to an upper surface of the upper plate such that an opening portion faces upward; a vibration motor coupled to a lower surface of the upper plate (20) to induce vibration in the upper plate; a rubber ...

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Номер записи: 3
28-04-2016 дата публикации

APPARATUS FOR MEASURING CONSISTENCY OF FRESH CONCRETE AND METHOD FOR MEASURING CONSISTENCY OF FRESH CONCRETE USING SAME

Номер: KR1020160046015A
Автор: PARK, KWANG SEO, YOON, MYEONG JOONG, LEE, MIN JO, JU, YOUNG GIL, CHOI, YOUNG KOOK, JO, SUNG HYUN, SHIN, SEUNG BONG, PARK, KWANG YOUNG, CHA, CHEOL YONG
Принадлежит:

An apparatus for measuring consistency of fresh concrete comprises: a lower plate consisting of a plate-shaped member; an upper plate consisting of a watertight plate-shaped member; three or more legs which are long members consisting of dampers, whose lower ends are mounted on an upper surface of the lower plate, and whose upper ends are mounted on a lower surface of the upper plate to separate the upper plate from an upper portion of the lower plate and fix the upper plate on the upper portion of the lower plate in parallel with the lower plate; a cylindrical container mounted on an upper surface of the upper plate to direct an opening part thereof upwards; and a vibration device attached to the lower surface of the upper plate to generate vibration on the upper plate. A method for measuring consistency of fresh concrete using the apparatus for measuring consistency of fresh concrete comprises: (a) a step of filling the cylindrical container with a specimen of a prescribed weight of fresh ...

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Номер записи: 4
08-03-2018 дата публикации

COMPOSITION FOR FORMING CONCRETE AND CONCRETE MANUFACTURED THEREFROM

Номер: KR101835810B1
Автор: CHA, CHEOL YONG, PARK, KWANG YOUNG, KIM, JUNG SUN, PARK, KWANG SEO, CHOI, YOUNG KOOK, KIM, BO SEUNG, PARK, KI HONG, KIM, JOON YEOUN, PARK, HEE GON, LEE, JI HWAN, HONG, SEOK BEOM, KIM, WOO JAE, YOO, JO HYEONG, LEE, JOO HO, JANG, SUNG HOON, KIM, KWANG KI, KIM, YOUNG SUN, CHO, HONG BUM, LEE, SANG HYUN, WE, JOON WOO
Принадлежит: SILKROAD C&T, LOTTE ENGINEERING & CONSTRUCTION CO., LTD., POSCO ENGINEERING & CONSTRUCTION CO., LTD., DOOSAN ENGINEERING & CONSTRUCTION CO., LTD.

Provided are a composition for forming concrete and concrete manufactured thereby, which can reduce interfacial tension between water and surface of concrete or water and water to prevent cracks of the concrete caused by drying shrinkage. More specifically, the composition for forming the concrete contains aggregates, a bond material, an admixture, and water, wherein the admixture contains a polycarboxylate ether based compound and a polyalkylene ether based compound, the polycarboxylate ether based compound contains copolymer including a first repeating unit, a second repeating unit, and a third repeating unit, the first repeating unit is induced from a compound represented by chemical formula 1, CH_2 = CR_1-L_1-(CH_2CH_2O)_n1-(C=O)-R_2, the second repeating unit is induced from unsaturated carboxylic acid, the third repeating unit is induced from unsaturated carboxylate, and the polyalkylene ether based compound has hydrophile lipophile balance (HLB) of 10 to 13. L_1, R_1, R_2, and n1 ...

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Номер записи: 5
04-12-2014 дата публикации

MACROMONOMER FOR PREPARING CEMENT ADMIXTURE AND METHOD FOR PREPARING SAME, AND CEMENT ADMIXTURE COMPRISING POLYCARBOXYLIC ACID COPOLYMER, DERIVED FROM MACROMONOMER, AND LAYERED DOUBLE HYDROXIDE AND METHOD FOR PREPARING SAME

Номер: WO2014193082A1
Автор: KIM, Bo Seung, KIM, Su Il, KIM, Jung Sun, PARK, Kwang Young, CHA, Cheol Yong
Принадлежит:

Disclosed are a macromonomer for preparing a cement admixture and a method for preparing same; and a cement admixture comprising a polycarboxylic acid copolymer, derived from the macromonomer, and a layered double hydroxide and a method for preparing same. The polycarboxylic acid copolymer comprises (a) a structural unit derived from a macromonomer compound represented by the following chemical formula (1) and (b) a structural unit derived from an acrylic monomer represented by the following chemical formula (4). The cement admixture has superior dispersibility, workability maintenance, and corrosion resistance. [chemical formula (1)] CH2=CR1-(CH2)m-O-(CH2CH2O)n-OCO-R2-COOH [chemical formula (4)] CH2=CR3-CO-M1 ...

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Номер записи: 6
03-01-2017 дата публикации

굳지 않은 콘크리트의 컨시스턴시 측정 장치 및 이를 이용한 굳지 않은 콘크리트의 컨시스턴시 측정 방법

Номер: KR0101691896B1
Автор: 박광서, 윤명중, 이민조, 주영길, 최영국, 조성현, 신승봉, 박광영, 차철용
Принадлежит: 주식회사 실크로드시앤티

... 본 발명은 「판형부재로 이루어진 하부평판; 수밀성의 판형부재로 이루어진 상부평판; 댐퍼로 이루어진 길이부재로서 하단은 상기 하부평판의 상면에 결합되고 상단은 상기 상부평판의 하면에 결합되어 상기 상부평판이 상기 하부평판의 상부에 이격되어 평행하게 배치 고정될 수 있도록 해주는 3 이상의 레그; 상기 상부평판의 상면에 개구부가 상방향을 향하도록 결합된 원통형 용기; 및 상기 상부평판의 하면에 부착되어 상기 상부평판에 진동을 유발하는 진동장치;를 포함하여 구성된 것을 특징으로 하는 굳지 않은 콘크리트의 컨시스턴시 측정 장치」 및 「상기 굳지 않은 콘크리트의 컨시스턴시 측정 장치를 이용하여 굳지 않은 콘크리트의 컨시스턴시를 측정하는 방법으로서, (a) 일정 중량의 굳지 않은 콘크리트의 시험체를 상기 원통형 용기에 채워 다지는 단계; (b) 상기 원통형 용기의 내경에 상응하는 지름을 가지는 투명 원판을 상기 원통형 용기에 채워진 일정 중량의 굳지 않은 콘크리트의 시험체 위에 올려 놓는 단계; 및 (c) 상기 진동장치를 가동하여 상기 상부평판에 진동을 유발하고, 상기 투명 원판이 일정 중량의 굳지 않은 콘크리트 시험체에서 떠오르는 모르타르에 의해 완전히 젖기까지 걸리는 시간을 측정하는 단계;를 포함하여 이루어지는 굳지 않은 콘크리트의 컨시스턴시 측정 방법」을 제공한다.

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Номер записи: 7
16-05-2017 дата публикации

MONOMER FOR CRACK-REDUCING CONCRETE ADMIXTURE AND CRACK-REDUCING CONCRETE ADMIXTURE COMPRISING SAME

Номер: KR101735772B1
Автор: KIM, BO SEUNG, KIM, SU IL, KIM, JUNG SUN, PARK, KWANG YOUNG, CHA, CHEOL YONG
Принадлежит: SILKROAD C&T

The present invention relates to a monomer for a crack-reducing concrete admixture which can prevent cracks on concrete by the drying shrinkage by reducing the interfacial tension between water and the surface of the concrete, and to the crack-reducing concrete admixture comprising the same. The monomer for a crack-reducing concrete admixture includes a first recurring unit, a second recurring unit, and a third recurring unit, and the first recurring unit is represented by chemical formula 1: CH_2=CR_1-L-(CH_2CH_2O)_n-(C=O)-R_2. COPYRIGHT KIPO 2017 ...

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Номер записи: 8
10-06-2015 дата публикации

CEMENT ADMIXTURE COMPRISING POLYCARBOXYLIC COPOLYMER AND LAYERED DOUBLE HYDROXIDE, AND METHOD FOR PREPARING THE SAME

Номер: KR0101527177B1
Автор: 김보승, 김수일, 김정선, 박광영, 차철용
Принадлежит: 주식회사 실크로드시앤티

... 본 발명은 폴리카르복실산계 공중합체 및 층상형 이중 수산화물을 포함하는 시멘트 혼화제 및 이의 제조 방법에 관한 것이다. 상기 폴리카르복실산계 공중합체는 (a) 하기 화학식 1로 표시되는 마크로모노머로부터 유래된 구조 단위 및 (b) 하기 화학식 2로 표시되는 아크릴계 단량체로부터 유래된 구조 단위를 포함하는 것을 특징으로 한다. 본 발명에 따른 상기 시멘트 혼화제는 분산성, 작업성 유지능 및 방청 성능이 우수하다. [화학식 1]: CH2=CR1-(CH2)m-O-(CH2CH2O)n-OCO-R2-COOH [화학식 2]: CH2=CR3-CO-M1 ...

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Номер записи: 9
09-07-2018 дата публикации

CHEMICAL ADMIXTURE FOR CONCRETE IN HOT WEATHER CONDITIONS AND MANUFACTURING METHOD THEREOF

Номер: KR101876181B1
Автор: KIM BO SEUNG, SONG KWANG HOON, KIM JUNG SUN, PARK KWANG YOUNG, CHA CHEOL YONG, PARK SOON JEON, SEOK WON KYUN, KIM KWANG KI, KIM YOUNG SUN, CHO HONG BUM, KI JUN DO, LEE JEONG BEOM, LEE HO GU
Принадлежит: SILKROAD C&T, LOTTE ENGINEERING & CONSTRUCTION CO., LTD., SUNGSHIN VINA CO., LTD.

The present invention relates to a chemical admixture for concrete, and more specifically, to a chemical admixture for concrete in hot weather conditions, in which phosphate is introduced into the admixture to maximize the slump retention performance of the concrete even if no delay agent is used, prevent initial deterioration in the dispersion force and impart excellent workability in order to solve the problems of condensation delay and initial strength deterioration of the concrete caused by a conventional retarder, and to a manufacturing method thereof. COPYRIGHT KIPO 2018 (AA) Results of the slump test (BB) Example 1 (CC) Example 2 (DD) Example 3 (EE) Example 4 (FF) Example 5 (GG) Example 6 (HH) Comparative example 1 (II) Comparative example 2 (JJ) Comparative example 3 ...

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Номер записи: 10
10-07-2015 дата публикации

MONOMER FOR PREPARING CEMENT ADMIXTURE AND METHOD FOR PREPARING THE SAME

Номер: KR0101534771B1
Автор: 김보승, 김수일, 김정선, 박광영, 차철용
Принадлежит: 주식회사 실크로드시앤티

... 본 발명은 시멘트 혼화제 제조용 모노머 및 이의 제조 방법에 관한 것이다. 상기 시멘트 혼화제 제조용 모노머는 디카르복실산에서 유래한 말단부를 포함하는 것을 특징으로 한다. 본 발명에 따른 모노머로 제조한 시멘트 혼화제는 분산성과 작업성 유지 성능이 모두 우수한 모르타르를 형성할 수 있다.

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Номер записи: 11