Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/213425

Title

Constitutive model for confined high strength concrete subjected to cyclic loading

Author(s)

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

Abstract

The paper presents a constitutive model developed for high strength concrete with uniform lateral confinement subjected to cyclic axial compression. It is based on the testing program carried out for normal and high strength concrete. Compressive strengths of concrete at the time of testing were 44, 58, 83, and 106 MPa. Uniform confining pressures applied were 4, 8, and 12 MPa. The stress-strain model presented in this paper was developed based on triaxial test results, which were obtained under well-controlled conditions, where direct measurement of axial and lateral strains were possible. Ability to predict the axial as well as lateral strains in confined concrete is a superior attribute of the proposed model. When concrete is analyzed for passive confinement (such as the one provided by reinforcement), estimating the lateral strain is important because the lateral confinement directly depends on it. The proposed model can be used for modeling high strength concrete in seismic analysis of structures, where confining of concrete by reinforcement is essential for ductility.

Publication type

Journal article

Source

Journal of Materials in Civil Engineering, Vol. 16, no. 4 (Jul/Aug 2004), pp. 297-305

Publication year

2004

FOR Code(s)

0905 Civil Engineering;  0912 Materials Engineering

Keyword(s)

Axial strains;  Civil engineering;  Compressive strength;  Concrete reinforcements;  Concretes;  Cyclic axial compression;  Cyclic loads;  Ductility;  Lateral strains;  Pressure effects;  Seismic prospecting;  Strain;  Stress analysis;  Triaxial test

Publisher

American Society of Civil Engineers

ISSN

0899-1561

Publisher URL

http://dx.doi.org/10.1061/(asce)0899-1561(2004)16:4(297)

Copyright

Copyright © 2004 ASCE.

Peer reviewed