Constitutive model for confined high strength concretes subjected to cyclic loading

Lokuge, Weena and Sanjayan, J. G. and Setunge, Sujeeva (2004) Constitutive model for confined high strength concretes subjected to cyclic loading. Journal of materials in Civil Engineering, 16 (4). pp. 297-305. ISSN 0899-1561

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.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Author version not held. Permanent restricted access to published version due to publisher's copyright restrictions.
Depositing User: Dr Weena Lokuge
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 19 Nov 2010 02:59
Last Modified: 15 Aug 2014 02:28
Uncontrolled Keywords: High strength concretes; Constitutive relations; Cyclic loads; Ductility; Seismic analysis
Fields of Research (FOR2008): 09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
Socio-Economic Objective (SEO2008): E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: doi: 10.1061/~ASCE!0899-1561~2004!16:4~297!
URI: http://eprints.usq.edu.au/id/eprint/8972

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