Proceedings of the Korea Concrete Institute Conference (한국콘크리트학회:학술대회논문집)

Korea Concrete Institute (한국콘크리트학회)
권호 표지

An Experimental Study on Effect of Water-to-Binder Ratio and Admixture on Autogenous Shrinkage of Ultra High Strength Concrete

W/B와 혼화재 치환율이 초고강도 콘크리트의 자기수축에 미치는 영향에 관한 실험적 연구

  • 김대훈 ((주)삼보기술단 기술연구소) ;
  • 김지원 (삼성물산(주) 건설부분) ;
  • 손유신 (삼성물산(주) 건설부분 기술연구소) ;
  • 윤영수 (고려대학교 사회환경시스템공학과)
  • Published : 2006.05.11
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Abstract

This paper investigates the shrinkage behavior of Ultra High Strength(UHSC) having three water-to-cementitious material ratio, 0.20, 0.16, 0.12. All of mixtures have same design compressive strength. Free shrinkage test for autogenous and drying shrinkage using $100{\times}100{\times}400$ prismatic specimen was conducted. On all mixture, Effects of fly ash and blast-furnace slag on each shrinkage test results were also investigated. The largest portion of autogenous shrinkage was observed in UHSC12 (w/b=0.12) and the measured strain was as high as 80% of the total drying shrinkage strain. The autogenous shrinkage of UHSC decreased as the amount of fly ash increased as demonstrated in the literature. However, the results of the effect of blast-furnace slag on autogenous shrinkage were somewhat different from previous researches.

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