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A Study on the Creep and Autogenous Shrinkage of High Performance Concrete with Expansive Additive and Shrinkage Reducing Admixtures at Early Age
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  • A Study on the Creep and Autogenous Shrinkage of High Performance Concrete with Expansive Additive and Shrinkage Reducing Admixtures at Early Age
  • A Study on the Creep and Autogenous Shrinkage of High Performance Concrete with Expansive Additive and Shrinkage Reducing Admixtures at Early Age
저자명
Park. Sun-Gyu,Noguchi. Takafumi,Kim. Moo-Han
간행물명
International journal of concrete structures and materials
권/호정보
2006년|18권 |pp.73-77 (5 pages)
발행정보
한국콘크리트학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

This paper shows a study of the efficiency of expansive additive and shrinkage reducing admixture in controlling restrained shrinkage cracking of high performance concrete at early age. Free autogenous shrinkage test of $100{ imes}100{ imes}400mm$ concrete specimens and simulated completely-restrained test with VRTM(variable restraint testing machine) were performed. Creep and autogenous shrinkage of high-performance concrete with and without expansive additive and shrinkage reducing admixture were investigated by experiments that provided data on free autogenous shrinkage and restrained shrinkage. The results showed that the addition of expansive additive and shrinkage reducing admixture effectively reduced autogenous shrinkage and tensile stress in the restrained conditions. Also, it was found that the shrinkage stress was relaxed by 90% in high-performance concrete with and without expansive additive and shrinkage reducing admixtures at early age.