STUDY ON FRACTURE PROPERTIES OF SELF-COMPACTING CONCRETE USING WEDGE SPLITTING TEST

摘要：

This paper reports fracture behavior study on four types of self-compacting concrete with compressive strength ranging from 40MPa to 150MPa.Basic fracture properties investigated for each type of self-compacting concrete are: the fracture toughness KIC,the fracture energy Gr,the critical crack length extension △ac and brittle behavior.For achieving this aim,tests were conducted on wedge splitting specimens with initial notch length approximating 100mm.The results show that the fracture energy GF differs little for self-compacting concrete under consideration in the test,whereas the fracture toughness KIC increases with increasing compressive strength,which is the same as observed in conventional vibrated concrete.At the same time,with computed brittleness index it can be said for sure that as the self-compacting concrete raises its strength,it would fracture in a more brittle manner.

作者: Yanhua Zhao Jianxin Ma Zhimin Wu Shilang Xu Hongbo Gao

作者单位: State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,China Institute for Structural Concrete and Building Materials of Leipzig University,Germany

会议类型: 国际会议

会议名称: 第一届自密实混凝土设计、性能及应用国际研讨会(1st International Symposium on Design,Performance and Use of Self-Consolidating Concrete SCC2005-China)

会议地点: 长沙

会议语种:英文

页码: 421-428

在线出版日期: 2005-05-26（万方平台首次上网日期，不代表论文的发表时间）