活性粉末混凝土弯曲韧性评价方法与试验研究

Evaluating methods and testing research of flexural toughness for reactive powder concrete

通过不同体积掺率和不同品种钢纤维增强活性粉末混凝土的弯曲韧性试验,探讨了钢纤维体积掺率、钢纤维直径、端部构造对活性粉末混凝土增韧效果的影响规律,最后分析了几种常用的弯曲韧性评价方法对表征活性粉末混凝土韧性的适用性和存在的问题,研究成果将为活性粉末混凝土的结构设计和工程施工提供参考。

Through flexural toughness test of steel fiber reinforced reactive powder concrete of different fiber volume content and differ-ent fiber varieties,the influence of steel fiber volume content,fiber diameter and end structure on flexural toughness of reactive powder concrete was analyzed.Through calculation and analysis of test results ,application and existing problems of several toughness evaluating methods adopted widely in China and abroad on toughness of reactive powder concrete were summarized.The research results will provide reference for design and construction of reactive powder concrete structure.