Behavior of steel fiber - Reinforced high-strength concrete at medium strain rate

被引：31

作者：

Jiao C. ^{[1
]}

Sun W. ^{[2
]}

Huan S. ^{[3
]}

Jiang G. ^{[3
]}

机构：

[1] School of Civil Engineering, Guangzhou University

[2] School of Materials Science and Engineering, Southeast University

[3] Earthquake Engineering Research Test Center, Guangzhou University

来源：

Frontiers of Architecture and Civil Engineering in China | 2009年 / 3卷 / 2期

基金：

中国国家自然科学基金;

关键词：

High strain rates; Split Hopkinson press bar (SHPB); Steel fiber-reinforced high-strength concrete (SFRHSC); Strain rate hardening effects;

D O I：

10.1007/s11709-009-0027-0

中图分类号：

学科分类号：

摘要：

Impact compression experiments for the steel fiber-reinforced high-strength concrete (SFRHSC) at medium strain rate were conducted using the split Hopkinson press bar (SHPB) testing method. The volume fractions of steel fibers of SFRHSC were between 0 and 3%. The experimental results showed that, when the strain rate increased from threshold value to 90 s-1, the maximum stress of SFRHSC increased about 30%, the elastic modulus of SFRHSC increased about 50%, and the increase in the peak strain of SFRHSC was 2-3 times of that in the matrix specimen. The strength and toughness of the matrix were improved remarkably because of the superposition effect of the aggregate high-strength matrix and steel fiber high-strength matrix. As a result, under impact loading, cracks developed in the SFRHSC specimen, but the overall shape of the specimen remained virtually unchanged. However, under similar impact loading, the matrix specimens were almost broken into small pieces. © 2009 Higher Education Press and Springer-Verlag GmbH.

引用

页码：131 / 136

页数：5

共 17 条

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