Determination of Residual Fracture Toughness of Post-fire Concrete Using Analytical and Weight Function Method

摘要：

　　Determination of double-K fracture parameter using both analytical and weight function method is carried out in present research.In calculating the cohesive fracture toughness,two situations are divided at critical load.Wedge-splitting tests with ten temperatures varying from 20oC to 600oC are implemented.The complete load-crack opening displacement curves are obtained from which the initial and critical fracture toughness could be calculated experimentally.The validation of double-K fracture model to the post-fire concrete specimens is proved.Meanwhile the weight function method agrees well with the analytical method.

关键词： double-K fracture parameter analytical method weight function method post-fire concrete

作者: YU Kequan LU Zhoudao YU jiangtao

作者单位: Department of civil engineering,Tongji University,Shanghai 200092,China

会议类型: 国际会议

会议名称: 第13届国际断裂大会(ICF2013)

会议地点: 北京

会议语种:英文

页码: 1-12

在线出版日期: 2013-06-16（万方平台首次上网日期，不代表论文的发表时间）