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A platform for research: civil engineering, architecture and urbanism
Ultra-high Performance Concrete Composition With Low Shrinkage And Method for Manufacturing Ultra-high Performance Concrete Using the Same
The present invention relates to a shrinkage-reducing ultra-high strength concrete composition and a manufacturing method for ultra-high strength concrete using the same, wherein the concrete composition can improve durability of a concrete structure by significantly improving mechanical performance compared with the existing cement concrete and, at the same time, having excellent shrinkage-reducing performance. The shrinkage-reducing ultra-high strength concrete composition is composed of: 20-30 parts by weight of silica fume; 30-40 parts by weight of crushed quartz; 100-120 parts by weight of silica sand; 0.05-0.15 part by weight of carbon nanotube (CNT); 1.5-2.5 parts by weight of nanosilica; 1-10 parts by weight of a CSA expanding agent; 0.1-3 parts by weight of a shrinkage reducing agent; 2-5 parts by weight of a fluidizing agent; 1.5-2.5 vol% of a steel fiber; and 21-24 parts by weight of water with respect to 100 parts by weight of cement.
본 발명은 기존 시멘트 콘크리트에 비해 역학적 성능을 획기적으로 향상시킴과 동시에 우수한 수축 저감 성능을 가짐으로써 콘크리트 구조물의 내구성을 향상시킬 수 있는 수축 저감 초고강도 콘크리트 조성물 및 이를 이용한 초고강도 콘크리트의 제조방법에 관한 것으로, 본 발명에 따른 수축 저감 초고강도 콘크리트 조성물은, 시멘트 100 중량부에 대해 실리카 퓸 20~30 중량부, 석영 미분말(crushed quartz) 30~40 중량부, 규사(silica sand) 100~120 중량부, 탄소나노튜브(CNT) 0.05~0.15 중량부, 나노 실리카(nano silica) 1.5~2.5 중량부, CSA 팽창재 1~10 중량부, 수축저감제 0.1~3 중량부, 유동화제 2~5 중량부, 강섬유 1.5~2.5 부피%, 및 물 21~24 중량부를 포함할 수 있다.
Ultra-high Performance Concrete Composition With Low Shrinkage And Method for Manufacturing Ultra-high Performance Concrete Using the Same
The present invention relates to a shrinkage-reducing ultra-high strength concrete composition and a manufacturing method for ultra-high strength concrete using the same, wherein the concrete composition can improve durability of a concrete structure by significantly improving mechanical performance compared with the existing cement concrete and, at the same time, having excellent shrinkage-reducing performance. The shrinkage-reducing ultra-high strength concrete composition is composed of: 20-30 parts by weight of silica fume; 30-40 parts by weight of crushed quartz; 100-120 parts by weight of silica sand; 0.05-0.15 part by weight of carbon nanotube (CNT); 1.5-2.5 parts by weight of nanosilica; 1-10 parts by weight of a CSA expanding agent; 0.1-3 parts by weight of a shrinkage reducing agent; 2-5 parts by weight of a fluidizing agent; 1.5-2.5 vol% of a steel fiber; and 21-24 parts by weight of water with respect to 100 parts by weight of cement.
본 발명은 기존 시멘트 콘크리트에 비해 역학적 성능을 획기적으로 향상시킴과 동시에 우수한 수축 저감 성능을 가짐으로써 콘크리트 구조물의 내구성을 향상시킬 수 있는 수축 저감 초고강도 콘크리트 조성물 및 이를 이용한 초고강도 콘크리트의 제조방법에 관한 것으로, 본 발명에 따른 수축 저감 초고강도 콘크리트 조성물은, 시멘트 100 중량부에 대해 실리카 퓸 20~30 중량부, 석영 미분말(crushed quartz) 30~40 중량부, 규사(silica sand) 100~120 중량부, 탄소나노튜브(CNT) 0.05~0.15 중량부, 나노 실리카(nano silica) 1.5~2.5 중량부, CSA 팽창재 1~10 중량부, 수축저감제 0.1~3 중량부, 유동화제 2~5 중량부, 강섬유 1.5~2.5 부피%, 및 물 21~24 중량부를 포함할 수 있다.
Ultra-high Performance Concrete Composition With Low Shrinkage And Method for Manufacturing Ultra-high Performance Concrete Using the Same
수축 저감 초고강도 콘크리트 조성물 및 이를 이용한 초고강도 콘크리트의 제조방법
LEE HAENG KI (author) / KIM SEON HYEOK (author) / SEO JOON HO (author) / YOON HYUN NO (author) / PARK SOL MOI (author)
2020-01-07
Patent
Electronic Resource
Korean
IPC:
C04B
Kalk
,
LIME
European Patent Office | 2020
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Restrained Shrinkage Mechanism of Ultra High Performance Concrete
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Restrained Shrinkage Mechanism of Ultra High Performance Concrete
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Autogenous shrinkage behavior of ultra-high performance concrete
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