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Title

Triaxial test results of high-strength concrete subjected to cyclic loading

Author(s)

Lokuge, W. P.;  Sanjayan, J. G.;  Setunge, S.

Abstract

High-strength concrete (HSC) has highly desirable structural engineering properties, which can lead to significant cost savings in heavily loaded concrete structures. However, its use is limited by a concern regarding an increased brittleness compared to normal strength concrete (NSC), especially under complex multi-axial loading conditions. The issue of ductility is extremely important in structures subjected to earthquake loading conditions. In order to determine the lateral confinement required for a given level of ductility, the relationship between axial stress and lateral strain of confined HSC needs to be established. This paper describes a testing programme carried out to obtain the relationships between axial stress, axial strain and lateral strain for HSC under cyclic loading and subjected to constant lateral confining pressures. Compressive strengths of concrete tested were 40, 60, 80 and 100 MPa. Uniform confining pressures applied were 4, 8 and 12 MPa. The experimental results are presented and the effects of cyclic loading and confinement on the constitutive behaviour of HSC are described.

Publication type

Journal article

Source

Magazine of Concrete Research, Vol. 55, no. 4 (Aug 2003), pp. 321-329

Publication year

2003

FOR Code(s)

0905 Civil Engineering

Keyword(s)

Compressive strength;  Concretes;  Cyclic loads;  Earthquakes;  High-strength concretes;  Structural design

Publisher

ICE Publishing

ISSN

0024-9831

Publisher URL

http://dx.doi.org/10.1680/macr.55.4.321.37580

Copyright

Copyright © 2003 Thomas Telford Ltd. This paper was originally published in the Magazine of Concrete Research and is available from: http://www.concrete-research.com. Published version reproduced here with the kind permission of the publisher.

Full text

Peer reviewed