Stress versus strain relationship of high strength concrete under high lateral confinement

被引：52

作者：

Candappa, DP ^{[1
]}

Setunge, S ^{[1
]}

Sanjayan, JG ^{[1
]}

机构：

[1] Monash Univ, Dept Civil Engn, Clayton, Vic 3168, Australia

来源：

CEMENT AND CONCRETE RESEARCH | 1999年 / 29卷 / 12期

关键词：

compressive strength; mechanical properties; high performance concrete; modeling; stress-strain curve;

D O I：

10.1016/S0008-8846(99)00219-7

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A common application of high strength concrete (HSC) is in columns subjected to large compressive forces. However, a major problem is the insufficient ductility available in HSC columns. To determine the required lateral reinforcement to maintain sufficient ductility, a good understanding of the stress-strain behaviour of confined concrete needs to be established. This paper describes a testing program carried nut to obtain experimental data of complete (ascending and descending) stress-strain relationships between axial stress, axial strain and lateral strain for HSC. Compressive strengths of concrete tested were 100 MPa and 60 MPa. The confining pressures used were 4 MPa, 8 MPa and 12 MPa. A total of 18 stress-strain curves are presented. The experimental results obtained seem to indicate that, for high confining pressures, the lateral strain at peak stress for 100 MPa concrete was 20% less than that of the 60 MPa concrete. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：1977 / 1982

页数：6