Journal of the Korea Institute of Building Construction (한국건축시공학회지)

The Korean Institute of Building Construction (한국건축시공학회)
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Effects of Fiber Volume Fraction and Water/Cement Ratio on Toughness Development of Steel Fiber Reinforced Concrete

  • Lee, Chang Joon (School of Architecture and Civil Engineering, Kyungpook National University) ;
  • Lange, David A. (Department of Civil and Environmental Eng., University of Illinois at Urbana-Champaign) ;
  • Lee, Jae Yong (Division of Architecture, Pukyong National University) ;
  • Shin, Sung Woo (Department of Safety Engineering, Pukyong National University)
  • Received : 2012.07.25
  • Accepted : 2012.10.12
  • Published : 2013.02.20
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Abstract

Flexure toughness of Steel Fiber Reinforced Concrete (SFRC) shows a time-dependent characteristic due to the hydration process of the cement matrix in the SFRC system. The effect of two important factors, water/cement (w/c) ratio and fiber volume fraction, on the flexure toughness development of SFRC were investigated. Three different SFRC mixtures with hooked-end steel fibers were tested using a four-point bending testing configuration. Each mixture was tested at five different ages. The results showed that the post-peak toughness of SFRC developed at an earlier age than the first-crack toughness.

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References

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