期刊首页 优先出版 当期阅读 过刊浏览 作者中心 关于期刊 English

2009年 第3卷 第2期

摘要

关键词

相关研究

回顶部

《结构与土木工程前沿（英文）》 >> 2009年 第3卷 第2期 doi: 10.1007/s11709-009-0027-0

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

1. School of Civil engineering, Guangzhou University, Guangzhou 510006, China; 2. School of Materials Science and Engineering, Southeast University, Nanjing 211189, China; 3. Earthquake Engineering Research Test Center, Guangzhou University, Guangzhou 510405, China

发布日期： 2009-06-05
HTML29 PDF 6 收藏 0

下一篇 上一篇

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 , 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.

相关研究