Research on Fracture-CMOD Toughness of Steel Fiber Reinforced Concrete

被引：1

作者：

Wang, Xiaowei ^{[1
]}

Tian, Wenling ^{[1
]}

Fan, Lingling ^{[1
]}

Zhou, Mingjie ^{[1
]}

Zhao, Xiaoyan ^{[1
]}

机构：

[1] Hebei Univ Technol, Sch Civil Engn, Tianjin 300401, Peoples R China

来源：

ADVANCES IN BUILDING MATERIALS, PTS 1-3 | 2011年 / 168-170卷

关键词：

Steel fiber; Concrete; Fracture toughness; Crack mouth opening displacement (CMOD);

D O I：

10.4028/www.scientific.net/AMR.168-170.1784

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In order to study the fracture toughness of steel fiber reinforced concrete (SFRC) and the postcracking toughness evaluation method, the fracture toughness tests were done for the four types of steel fibers and three kinds of matrix strength. According to the experiment curves of the load and the crack mouth opening displacement (Load-CMOD), the fracture toughness of SFRC was studied; the formulas of the postcracking toughness coefficient and the Fracture-CMOD toughness index were established. The experiment results show that the Fracture-CMOD toughness index can reflect sensitively to the effect on concrete toughness of the type of the steel fiber, and then it is avoid that the estimation error of the initial cracking point led to the evaluation error of the toughness. Comparison with other fibers B fiber shows the best crack resistance and the toughening ability.

引用

页码：1784 / 1787

页数：4