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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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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 24. Отображено 24.
25-03-2016 дата публикации

FIBER REINFORCED NON-SHRINK GROUT OF ULTRAHIGH PERFORMANCE, AND MANUFACTURING METHOD FOR THE SAME

Номер: KR0101604378B1
Автор: 고경택, 류금성, 안기홍, 박정준
Принадлежит: 한국건설기술연구원

... 무수축 그라우트의 결합재에 실리카 흄(Silica Fume), 충전재, 팽창재 및 촉진경화제를 혼합하여 사용함으로써 작업성, 체적 변형, 역학적 특성 및 내구성을 향상시킬 수 있고, 무수축 그라우트용 시멘트 페이스트에 보강섬유(Reinforcing Fiber)를 투입하여 압축강도를 향상시킬 수 있는, 초고성능 섬유보강 무수축 그라우트 및 그 제조 방법이 제공된다. 본 발명에 따르면, 작업성, 체적 변형, 역학적 특성 및 내구성을 향상시킴으로써 기계 기초 밑의 들뜸 부위의 채움재, 앵커볼트 고정용 채움재, 지반 주입재, 포스트텐션 주입재, 해상 풍력 타워와 기초의 연결부위용, 및 교량 케이블 지지를 위한 새들 충전용에 적합하게 사용할 수 있다.

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Номер записи: 1
16-12-2016 дата публикации

ULTRA-HIGH PERFORMANCE CONCRETE FOR MIXING MICRO BASALT FIBER AND MACRO STEEL FIBER, AND MANUFACTURING METHOD THEREOF

Номер: KR1020160144058A
Автор: RYU, GUM SUNG, KOH, KYUNG TAEK, AN, GI HONG, PARK, CHUN JIN
Принадлежит:

Provided are ultra-high performance concrete (UHPC) for mixing a micro basalt fiber and a macro steel fiber, and a manufacturing method thereof, capable of increasing initial crack strength and bending tensile strength by mixing the micro basalt fiber and the macro steel fiber into a binder during manufacture of the UHPC, and economically manufacturing the UHPC by mixing, not only the steel fiber, the steel fiber and the micro basalt fiber cheaper than the steel fiber together into the binder during the manufacture of the UHPC. The UHPC for mixing the micro basalt fiber and the macro steel fiber includes: a binder; the micro basalt fiber; the macro steel fiber; coarse aggregate; fine aggregate; water; and a superplasticizer. COPYRIGHT KIPO 2016 (100) Ultra-high performance concrete (UHPC) (110) Binder (111) Cement (112) Fine blast slag powder (113) Silica fume (114) Fly ash (120) Fine aggregate (130) Coarse aggregate (140) Water (W) (150) Superplasticizer (160) Micro basalt (170) Macro ...

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Номер записи: 2
06-06-2013 дата публикации

ULTRA-HIGH PERFORMANCE FIBER REINFORCED CONCRETE COMPOSITION USING HYBRID STEEL FIBER AND METHOD FOR MANUFACTURING SAME

Номер: WO2013081271A1
Автор: RYU, Gum Sung, KOH, Kyung Taek, PARK, Jung Jun, KIM, Sung Wook
Принадлежит:

The present invention relates to an ultra-high performance concrete including a hybrid fiber, and more particularly, to an ultra-high performance fiber reinforced concrete composition using a hybrid steel fiber, in which a long fiber having a torsional cross-section is admixed to improve the mechanical properties of the concrete, and to control macro cracks due to the shape of the torsional cross-section, and in which a short fiber having a circular cross-section is admixed to control micro cracks, thereby improving the overall mechanical properties of the high performance concrete, and a method for manufacturing same.

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Номер записи: 3
06-01-2016 дата публикации

NON-SHRINKAGE GROUT HAVING FUNCTION PREVENTING TENDON CORROSION FOR PRESTRESSED CONCRETE (PSC) BRIDGE

Номер: KR0101582622B1
Автор: 고경택, 류금성, 안기홍
Принадлежит: 한국건설기술연구원

... 프리스트레스트 콘크리트(Pre Stressed Concrete: PSC) 교량의 쉬스관(Sheath Tube) 내에 주입하는 무수축 그라우트(Non-Shrinkage Grout)로서, 수축보상을 갖는 팽창재와 방청 기능을 갖는 방청재를 사용하고, 결합재로 고로슬래그를 시멘트와 혼합하여 사용함으로써 재령 초기부터 블리딩뿐만 아니라 수축과 팽창이 거의 발생하지 않아 긴장재와 부착성이 매우 좋고, 쉬스관 내에 그라우트를 완전히 충전할 수 있으며, 또한, 쉬스관 내에 무수축 그라우트가 미충전된 부분이 있더라도 방청 기능을 가지고 있기 때문에 PSC 교량에서 긴장재의 부식을 방지하여 내구성을 크게 향상시킬 수 있는, 프리스트레스트 콘크리트 교량용 긴장재 부식 방지 기능을 갖는 무수축 그라우트가 제공된다.

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Номер записи: 4
21-11-2013 дата публикации

CONCRETE COMPOSITION CONTAINING CEMENT-FREE BINDER COMPRISING BLAST FURNACE SLAG AND BOTTOM ASH, RAIL TIE USING SAME, AND METHOD FOR MANUFACTURING SAME

Номер: WO2013172497A1
Автор: KIM, Si Hwan, RYU, Gum Sung, KOH, Kyung Taek, LEE, Jang hwa, KIM, Do-Gyeum
Принадлежит:

The present invention relates to a concrete composition using bottom ash and blast furnace slag as a cement-free binder, a rail tie using same, and a method for manufacturing same, and more specifically, provided is a concrete composition in which cement is completely substituted by mixing low-strength bottom ash with appropriate ratios of blast furnace slag, alkaline minerals and sodium silicate, inducing polymerization therein via an activator and thus attaining strength and usability. Rail ties made with such a concrete composition are environment-friendly and are high strength, allowing a compressive strength of 60MPa or higher.

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Номер записи: 5
06-03-2018 дата публикации

HIGH PERFORMANCE LOW VISCOSITY PRE-MIXED GROUT FOR PRESTRESSED CONCRETE BRIDGES

Номер: KR101834853B1
Автор: KOH, KYUNG TAEK, RYU, GUM SUNG, AN, GI HONG
Принадлежит: KOREA INSTITUTE OF CIVIL ENGINEERING AND BUILDING TECHNOLOGY

The present invention relates to high performance low viscosity pre-mixed grout for prestressed concrete bridges. More specifically, the present invention relates to high performance low viscosity pre-mixed grout for prestressed concrete bridges, which contains a binding material, water, a water-reducing agent, a bleeding-reducing material, and a shrinkage-reducing material. By restricting content and types of the bleeding-reducing material, the water-reducing agent, and the shrinkage-reducing material, bleeding and shrinkage are avoided during construction. In addition, low viscosity makes grout injection easy and allows a sheath tube to be filled with the grout. Accordingly, it is possible to carry out construction of prestressed bridges while ensuring enhanced durability. COPYRIGHT KIPO 2018 (100) High performance low viscosity grout for PSC bridges (110) Binding material (120) Water (130) Water-reducing agent (140) Bleeding-reducing material (141) Silica (142) Zirconia (143) Alumina ...

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Номер записи: 6
18-04-2013 дата публикации

ASSEMBLY TYPE ELECTRIC HEATING SHEET FOR CURING MIDWINTER CONCRETE AND MIDWINTER CURING METHOD USING SAME

Номер: WO2013055065A1
Автор: PARK, Chun-Jin, KOH, Kyung-Taek, RYU, Gum-Sung, KIM, Do-Gyeum, LEE, Jang-Hwa
Принадлежит:

The present invention relates to an assembly type electric heating sheet for curing midwinter concrete and a midwinter curing method using same, and more specifically, to an assembly type electric heating sheet for curing midwinter concrete, and a midwinter curing method using the same, which can preemptively prevent deterioration in concrete quality such as setting retard, initial frost damage, strength development retard, and the like, which can be generated during concrete work in a midwinter environment, can be applied irrespective of an area of the concrete to be cured by assembling a heating unit and completing a heating sheet, and can easily perform the disassembling and post-managing work by replacing only the defective heating unit when a defect occurs.

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Номер записи: 7
21-11-2013 дата публикации

POWDER ALKALI-ACTIVATOR FOR CEMENT-FREE CONCRETE, CEMENT-FREE BINDER USING SAME, AND CEMENT-FREE CONCRETE

Номер: WO2013172496A1
Автор: KIM, Si Hwan, RYU, Gum Sung, KOH, Kyung Taek, LEE, Jang Hwa
Принадлежит:

The present invention relates to an alkali-activator for use in cement-free concrete in which industrial by-products, such as blast furnace slag, fly ash and bottom ash, are used instead of cement, the alkali-activator in powder form allowing convenience of use and uniform product quality, and thus the cement-free concrete using same allows consistent product quality with respect to the strength and usability thereof to be ensured.

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Номер записи: 8
04-02-2016 дата публикации

ULTRA-HIGH STRENGTH CONCRETE WITH IMPROVED CONSTRUCTABILITY AND MANUFACTURING METHOD THEREOF

Номер: KR101591275B1
Автор: KOH, KYUNG TAEK, RYU, GUM SUNG, AN, GI HONG, PARK, CHUN JIN
Принадлежит: KOREA INSTITUTE OF CIVIL ENGINEERING AND BUILDING TECHNOLOGY

Provided are an ultra-high strength concrete with improved constructability by increasing fluidity through lowering viscosity of the ultra-high strength concrete, considering find particles of fine aggregates, proportion of fine aggregates, and grain shapes of coarse aggregates which are the factors which affect constructability when manufacturing ultra-high strength concrete having compressions strength greater than or equal to 80 MPa, and a manufacturing method thereof. The ultra-high strength concrete comprises, based on 100 parts by weight of cement (111): a bonding agent (B: 110) including 6 to 20 parts by weight of silica fume (112), 22 to 35 parts by weight of ground granulated blast furnace slag (113), and 22 to 35 parts by weight of fly-ash (114); 45 to 55 parts by weight of fine aggregate (120); 65 to 85 parts by weight of coarse aggregate (130); 40 to 60 parts by weight of water (W: 140); and 4 to 7 parts by weight of a high-performance water reducing agent (150). COPYRIGHT KIPO ...

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Номер записи: 9
11-08-2015 дата публикации

CONCRETE CURING SHEET FOR PREVENTING PLASTIC SHRINKAGE CRACK, AND CURING METHOD USING THE SAME

Номер: KR0101543348B1
Автор: 박천진, 고경택, 류금성
Принадлежит: 한국건설기술연구원

... 여름철 등 고온건조한 기상조건 하에서 콘크리트의 초기양생 중에 발생할 수 있는 소성수축 균열을 방지함으로써 콘크리트의 품질 저하를 방지할 수 있고, 또한, 취급이 용이한 수냉식 콘크리트 양생시트를 제공함으로써 공사 노무자의 작업환경을 개선하고, 시공 방법을 간편화시킬 수 있는, 소성수축 균열 방지용 콘크리트 양생시트 및 그 양생 방법이 제공된다. 소성수축 균열 방지용 콘크리트 양생시트는, 타설된 콘크리트 상부에 포설되어 콘크리트 양생시 소성수축 균열을 방지하는 적어도 하나 이상의 양생시트 유닛; 상기 양생시트 유닛 내에 배치되어 물을 순환시키는 물 순환호스; 물 순환호스에 물을 공급하도록 양생시트 유닛의 일측에 형성되는 주수구; 물 순환호스를 통해 순환된 물이 배수되도록 양생시트 유닛의 타측에 형성되는 배수구; 물 순환호스에 공급되는 물을 순환시키는 물 순환펌프; 물 순환펌프 및 양생시트 유닛의 최초 주수구 사이에 체결되는 물 주입호스; 및 양생시트 유닛의 마지막에 연결된 배수구 및 상기 물 순환펌프 사이에 체결되는 물 배수호스를 포함하되, 양생시트 유닛은 물 순환호스를 통해 순환하는 물을 통해 수냉식으로 콘크리트를 일정 온도로 유지하는 것을 특징으로 한다.

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Номер записи: 10
06-07-2015 дата публикации

DRY-TYPE CEMENTLESS CONCRETE USING FLY ASH, FURNACE SLAG, AND POWDER TYPE ALKALI ACTIVATOR, AND METHOD FOR MANUFACTURING SAME

Номер: KR101534217B1
Автор: RYU, GUM SUNG, KOH, KYUNG TAEK, AN, GI HONG, LEE, JANG HWA
Принадлежит: KOREA INSTITUTE OF CONSTRUCTION TECHNOLOGY

Provided are dry-type cementless concrete using fly ash, furnace slag, and an powder type alkali activator, and a method for manufacturing the same. According to the present invention, the dry-type cementless concrete uses the fly ash, furnace slag, and powder type alkali activator in order to manufacture the dry-type cementless concrete, which is no slump, to perform a casting, and performs detachment of a steel mold right before curing, thus a problem of attachment with the steel mold can be prevented, and also, the fly ash and the furnace slag having an optimal ratio are applied at the same time as a binder instead of cement which discharges a large quantity of carbon dioxide, and the dry-type cementless concrete having 30 to 40 MPa of compressive strength which has excellent workability and enables to be cured at room temperature can be manufactured. In addition, the dry-type cementless concrete has high chemical resistance, thereby being simply applied to ecological blocks, sewage ...

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Номер записи: 11
29-03-2023 дата публикации

콘크리트 시편의 투기계수 측정용 시험장치 및 이를 이용한 시험방법

Номер: KR102515087B1
Автор: 강재윤, 류금성, 안기홍
Принадлежит: 한국건설기술연구원

... 초고속 튜브철도용 콘크리트 운송관에 대한 콘크리트 재료의 물리적 특성으로서 투기계수를 정량적으로 측정하기 위하여, 콘크리트 강도 및 두께를 변수로 하는 콘크리트 시편을 활용하여 시간에 따른 기압변화 속도와 일정한 기압에 도달하는 시간을 측정함으로써, 투기성능을 비교하여 정량적 투기계수를 산출할 수 있으며, 또한, 진공측 챔버의 체적이 일정한 체적을 유지하도록 구성함으로써 대기압 챔버로부터 콘크리트 시편을 투과하여 진공측 챔버로 이동하는 공기의 기압변화를 콘크리트 시편의 두께에 상관없이 측정할 수 있고, 또한, 진공측 챔버 및 대기압 챔버 전체를 감싸는 밀폐형 원통부재를 통해 콘크리트 시편의 측면을 밀폐함으로써 콘크리트 시편 두께가 커도 측면으로 유입되는 기체를 차단할 수 있는, 콘크리트 시편의 투기계수 측정용 시험장치 및 이를 이용한 시험방법이 제공된다.

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Номер записи: 12
09-05-2019 дата публикации

METHOD FOR BATCH CASTING HIGH-FLUIDITY HIGH-PERFORMANCE CONCRETE AND LOW-FLUIDITY HIGH-PERFORMANCE CONCRETE

Номер: WO2019088351A1
Автор: KOH, Kyung Taek, RYU, Gum Sung, AN, Gi Hong, KIM, Byung Suk, PARK, Sung Yong
Принадлежит:

The present invention relates to a method for batch casting high-fluidity high-performance concrete and low-fluidity high-performance concrete, wherein high-fluidity high-performance concrete for forming a girder portion of a bridge and low-fluidity high-performance concrete for forming a bottom plate portion of the bridge are cast in a batch by using concrete casting equipment, thereby reducing the cost and time of construction and preventing the occurrence of a cold joint to improve the durability of the concrete and thus prolong the lifespan of the bridge.

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Номер записи: 13
16-12-2016 дата публикации

CATTLE SHED FLOOR PLATE USING DRY CEMENTLESS CONCRETE AND METHOD FOR MANUFACTURING SAME

Номер: KR1020160144049A
Автор: RYU, GUM SUNG, KOH, KYUNG TAEK, AN, GI HONG
Принадлежит:

The present invention relates to a cattle shed floor plate using dry cementless concrete and a method for manufacturing the same. The dry cementless concrete has a high level of chemical resistance to be easily applicable to the cattle shed floor plate. Placement is performed after the no-slump dry cementless concrete is produced by the use of fly ash, blast furnace slag, and a powder-type alkali activator. Steel mold de-molding is performed immediately before curing, and thus attachment to a steel mold can be prevented. Because the strength of the dry cementless concrete in the early stage of aging is much higher than that of concrete in general and the dry cementless concrete is initially set early, the complex shape of the cattle shed floor plate can be easily maintained by means of de-molding immediately following placement. In addition, the cementless concrete in which the fly ash and blast furnace slag fine powder are activated is more excellent than cement concrete in general in ...

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Номер записи: 14
18-03-2016 дата публикации

HIGH PERFORMANCE GROUT FOR PRESTRESSED CONCRETE(PSC) BRIDGE

Номер: KR0101604371B1
Автор: 고경택, 류금성, 안기홍
Принадлежит: 한국건설기술연구원

... 표면장력 저하와 수축보상의 메커니즘이 동시에 발휘되는 수축저감재를 사용함으로써 재령 초기부터 블리딩뿐만 아니라 수축과 팽창이 거의 발생하지 않아 콘크리트 구조물과 긴장재와 부착성이 매우 좋고, 쉬스관 내에 그라우트를 완전히 충진할 수 있고, 이에 따라 PSC 교량에서 긴장재의 부식을 방지할 수 있어 내구성을 크게 향상시킬 수 있는, 프리스트레스트 콘크리트(PSC) 교량용 고성능 그라우트가 제공된다.

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Номер записи: 15
24-04-2018 дата публикации

METHOD OF BATCH-PLACING HIGH-FLUIDITY AND HIGH-PERFORMANCE CONCRETE AND LOW-FLUIDITY AND HIGH-PERFORMANCE CONCRETE

Номер: KR101851337B1
Автор: KOH KYUNG TAEK, RYU GUM SUNG, AN GI HONG, KIM BYUNG SUK, PARK SUNG YONG
Принадлежит: KOREA INSTITUTE OF CIVIL ENGINEERING AND BUILDING TECHNOLOGY

The present invention relates to a method of batch-placing high-fluidity and high-performance concrete and low-fluidity and high-performance concrete. Since high-fluidity and high-performance concrete for the formation of a girder for a bridge and low-fluidity and high-performance concrete for the formation of a floor plate for the bridge are batch-placed through concrete placement equipment, the present invention is capable of reducing time and costs for construction as well as preventing a cold joint and improving durability to extend the lifespan of the bridge. Moreover, the present invention is capable of securing workability required for keeping the amount of a high-performance water reducing agent uniform when batch-placing high-fluidity and high-performance concrete and low-fluidity and high-performance concrete; securing workability required for using a cellulose derivative thickener, a starch derivative thickener, or a sodium alginate thickener for mixing high-fluidity and high-performance ...

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Номер записи: 16
21-05-2015 дата публикации

HIGH PERFORMANCE GROUT FOR PRE-STRESSED CONCRETE BRIDGE

Номер: KR1020150055289A
Автор: KOH, KYUNG TAEK, RYU, GUM SUNG, AN, GI HONG
Принадлежит:

The present invention relates to a high performance grout for pre-stressed concrete (PSC) bridges. The present invention uses a shrinkage suppressing material capable of exerting surface tension degradation and shrinkage compensation mechanism to suppress the bleeding, shrinkage, and expansion from the initial stage to ensure the stable adhesion between a concrete structure and a tension member and tension member as well as fully filling the grout on the inside of a sheath pipe. Accordingly, the present invention can prevent the corrosion of the tension member in the PSC bridges to enhance the durability significantly. COPYRIGHT KIPO 2015 (100) High-performance grout for concrete (PSC) bridges (110) Binder (120) Water (140) Shrinkage reducing agent (141) Free lime (142) Anhydrite (143) Hauyne (144) Alcohol alkyl oxide additive (310) Dispersant agent ...

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Номер записи: 17
10-06-2016 дата публикации

METHOD FOR MANUFACTURING ULTRA HIGH PERFORMANCE CONCRETE FOR PREVENTING DRYING OF CONCRETE SURFACE USING OIL-BASED SURFACE FINISHING MATERIAL

Номер: KR0101628672B1
Автор: 류금성, 고경택, 안기홍, 박천진
Принадлежит: 한국건설기술연구원

... 초고성능 콘크리트(UHPC)의 타설면을 개선하도록 초고성능 콘크리트 타설 직후 유성타입의 표면 마감제를 도포하여 표면 건조를 방지함으로써, 표면부의 공극이 제거됨에 따라 콘크리트 표면부의 강도를 향상시키고 내구성능을 증가시킬 수 있고, 또한, 초고성능 콘크리트의 표면을 매끄럽게 함으로써 고품질의 초고성능 콘크리트를 제조할 수 있으며, 초고성능 콘크리트의 경화 메커니즘에 따라 수화반응으로 수분증발을 막음으로써 신뢰할 수 있는 초고성능 콘크리트의 강도를 확보할 수 있는, 유성타입의 표면 마감제를 이용하여 콘크리트 표면의 건조를 방지하는 초고성능 콘크리트의 제조 방법이 제공된다.

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Номер записи: 18
21-05-2015 дата публикации

NON-SHRINKAGE GROUT CAPABLE OF PREVENTION CORROSION OF TENSION MEMBER IN PSC BRIDGE AND MANUFACTURING METHOD THEREOF

Номер: KR1020150055291A
Автор: KOH, KYUNG TAEK, RYU, GUM SUNG, AN, GI HONG
Принадлежит:

The present invention relates to non-shrinkage grout injected in a sheath tube of a prestressed concrete (PSC) bridge. The grout includes an expandable material capable of compensating the shrinkage and an anti-rust material capable of preventing the rust. The blast furnace slag is mixed with cement to be used as a binding material to prevent the bleeding from the initial aging period and little shrinkage and expansion occur to ensure excellent adhesion between the grout and a tension member. The grout can also fully fill the sheath tube. Even when the grout does not fill the sheath pipe fully, the grout can prevent the corrosion of the tension member in the PSC bridge with the anti-rust property, thereby significantly increasing the durability. COPYRIGHT KIPO 2015 (100) Non-shrinkage grout preventing the corrosion of the tension member (110) Binder (111) Cement (112) Fine blast slag powder (120) Sinlerplatte expandable material (130) Anti-rust powder (140) Mixed water (141) Water (142) ...

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Номер записи: 19
15-02-2018 дата публикации

ULTRA-HIGH-PERFORMANCE FIBER-REINFORCED CONCRETE AND MANUFACTURING METHOD THEREFOR

Номер: WO2018030728A1
Автор: KOH, Kyung Taek, RYU, Gum Sung, AN, Gi Hong, KIM, Byung Suk, LEE, Nam Kon, PARK, Seung Hun
Принадлежит:

The present invention relates to an ultra-high-performance fiber-reinforced concrete and a manufacturing method therefor, wherein in a cement composite formed by mixing cement, a zirconium-containing silica micropowder, fine aggregate, a filler, a shrinkage-reducing agent, a high-performance water-reducing agent, mixing water, macro steel fiber, micro steel fiber, and an antifoaming agent, mixing is carried out such that the range of the specific surface area of the silica micropowder is 80,000-150,000 cm2/g, and the shape factor of the steel fiber is 60-100 and a crack inducer for inducing microcracks is mixed in a ratio of 0.5-2% with respect to the total volume.

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Номер записи: 20
21-05-2015 дата публикации

ULTRA-HIGH PERFORMANCE FIBER-REINFORCED NON-SHRINKING GROUT AND MANUFACTURING METHOD THEREOF

Номер: KR1020150055290A
Автор: KOH, KYUNG TAEK, RYU, GUM SUNG, AN, GI HONG, PARK, JUNG JUN
Принадлежит:

The present invention relates to an ultra-high performance fiber-reinforced non-shrinking grout and a manufacturing method thereof. The present invention mixes the silica fume, filler, expandable material, and curing promoter with the non-shrinking grout binder to enhance the workability, volume variation, mechanical properties, and durability. The present invention also adds reinforcing fibers to the cement paste for the non-shrinking grout to increase the compression strength. The present invention enhances the workability, volume variation, mechanical properties, and durability to be used to fill the saddle to support a bridge cable, the connection area of offshore wind towers and the base or be used as a post-tension grout, base grout, anchor bolt fixing filler, and filler for the lifting area beneath a machine base. COPYRIGHT KIPO 2015 (100) Ultra-high performance fiber-reinforced non-shrinking grout (110) Binder (111) Cement (112) Silica fume (113) Filler (114) Sand (115) Expandable ...

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Номер записи: 21
22-02-2017 дата публикации

시공성을 향상시킨 초고성능 섬유보강 콘크리트의 제조방법

Номер: KR0101705242B1
Автор: 고경택, 류금성, 안기홍, 박천진
Принадлежит: 한국건설기술연구원

... 초고성능 섬유보강 콘크리트에 유기계 지연제와 무기계 지연제를 적절히 혼합하여 사용함으로써, 초고성능 섬유보강 콘크리트의 응결(Setting) 중에서도 초결시간만 지연시키고 종결시간을 거의 지연시키지 않아 시공성과 품질을 향상시킬 수 있고, 또한, 초결시간을 2배까지 증가시킴으로써 1시간 30분의 초결시간이 경과하더라도 슬럼프 플로우(Slump Flow)를 550mm까지 확보할 수 있고, 경화시간의 지연 및 강도의 저하가 없으며, 1시간 30분의 초결시간을 용이하게 확보할 수 있고, 거푸집 제거시기 및 증기양생 개시시기가 지체되지 않으며, 150MPa 이상의 압축강도 및 30MPa 이상의 휨강도를 확보할 수 있는, 시공성을 향상시킨 초고성능 섬유보강 콘크리트 및 그 제조방법이 제공된다.

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Номер записи: 22
07-12-2016 дата публикации

METHOD FOR MANUFACTURING CONSTRUCTABILITY-IMPROVED ULTRA-HIGH PERFORMANCE FIBER-REINFORCED CONCRETE

Номер: KR1020160139208A
Автор: KOH, KYUNG TAEK, RYU, GUM SUNG, AN, GI HONG, PARK, CHUN JIN
Принадлежит:

The present invention relates to constructability-improved ultra-high performance fiber-reinforced concrete and a method for manufacturing the same. According to the present invention, inorganic and organic retarders are appropriately mixed with the ultra-high performance fiber-reinforced concrete, and thus only initial setting time delay is performed with little final setting time delay during the setting of the ultra-high performance fiber-reinforced concrete and its constructability and quality can be improved. In addition, a slump flow of up to 550 mm can be ensured even in the event of the elapse of 90 minutes in initial setting time because the initial setting time is increased up to two-fold. Furthermore, the present invention entails no hardening time delay and strength reduction, is capable of easily ensuring 90 minutes in initial setting time, entails no delay in terms of mold removal time and steam curing initiation time, and is capable of ensuring a compressive strength of at ...

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Номер записи: 23
12-02-2016 дата публикации

METHOD FOR MANUFACTURING ULTRA HIGH PERFORMANCE CONCRETE FOR PREVENTING CONCRETE SURFACE FROM DRYING USING OIL-BASED SURFACE FINISHING MATERIAL

Номер: KR1020160014970A
Автор: RYU, GUM SUNG, KOH, KYUNG TAEK, AN, GI HONG, PARK, CHUN JIN
Принадлежит:

Provided is a method for manufacturing ultra high performance concrete (UHPC), which prevents surface drying by applying an oil-based surface finishing material immediately after pouring the UHPC to improve surface of the poured concrete, and which improves mechanical strength of the concrete surface with respect to removal of the surface pores while enhancing durability. In addition, provided is a method for manufacturing UHPC, which can manufacture high-quality UHPC by smoothing the surface of the UHPC and secure reliable mechanical strength of UHPC by blocking vaporization of moisture through hydration reaction with respect to the hardening mechanism of UHPC, while preventing surface of the concrete from drying using an oil-based surface finishing material. The method for manufacturing UHPC comprises the steps of: a) preparing each of water (W) relevant to unit water content of UHPC and a binding material (B) which is formed by mixing cement and silica fume; b) mixing W and B to have ...

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Номер записи: 24