钢纤维掺量和基体强度对混凝土弯曲韧性的影响

Influence of Steel Fiber Volume Fraction and Cementitious Matrix Strength on Flexural Toughness in SFRC

采用两个基体强度和钢纤维的五种体积掺量进行组合试验,通过方差分析研究钢纤维体积掺量和混凝土基体强度对提高极限弯曲强度和达到极限弯曲强度后一定挠度区间内继续消耗能量影响的显著性,比较钢纤维体积掺量和基体强度不同组合时的增韧效果.研究结果表明:钢纤维体积掺量和基体强度均为影响钢纤维混凝土弯曲韧性的显著因素.

The paper adopts the experiments of combinations of two cement matrix strengthes and five volume fractions of steel fibers to test their significance levels on the ultimate flexural strength and the consumed energy under a certain deformation over the ultimate flexural strengthIt shows that both steel fiber volume fraction and cement matrix strength are significant elements influencing flexural toughness of steel fiber reinforced concrete