Journal of the Architectural Institute of Korea Structure & Construction (대한건축학회논문집:구조계)

Architectural Institute of Korea (대한건축학회)
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Shrinkage Properties and Potential for Cracking of High-strength Concrete containing High-volume Blast Furnace Slag

고로슬래그가 다량 혼입된 고강도 콘크리트의 수축 특성 및 균열 잠재성 평가

  • 김백중 (고려대 건축사회환경공학과) ;
  • 박충훈 (고려대 건축사회환경공학과) ;
  • 이종구 (고려대 건축사회환경공학과)
  • Received : 2015.03.05
  • Accepted : 2015.06.01
  • Published : 2015.06.30
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Abstract

The purpose of this study was to evaluate shrinkage properties and potential for shrinkage cracking of high-strength concrete containing high volume blast furnace slag (BFS). The W/B 0.34 and W/B 0.28 concrete specimens, with BFS replacement ratio for cement at 0%, 45% and 65%, were prepared to examine their autogenous shrinkage, unrestrained drying shrinkage and restrained drying shrinkage characteristics. The test results showed that the increase of BFS replacement ratio led to not only the increase of autogenous shrinkage and drying shrinkage at early curing age, but also increase of restrained stress in concrete. However, at BFS replacement ratio more than 45%, no significant effect of BFS was observed on autogenous shrinkage and drying shrinkage after 14 days. Furthermore, potential for shrinkage cracking of high strength concrete containing high-volume BFS was found to be the "low" according to ASTM C 1581/C 1581M-09a.

Keywords

Acknowledgement

Supported by : 한국에너지기술평가원(KETEP), 한국연구재단

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