Behavior of FRP-Confined Normal- and High-Strength Concrete under Cyclic Axial Compression
Publication: Journal of Composites for Construction
Volume 16, Issue 4
Abstract
An important application of fiber-reinforced polymer (FRP) composites is as a confining material for concrete, both in the seismic retrofit of existing reinforced concrete columns and in the construction of concrete-filled FRP tubes as earthquake-resistant columns in new construction. The reliable design of these structural members against earthquake-induced forces necessitates a clear understanding of the stress-strain behavior of FRP-confined concrete under load cycles. This paper presents the results of an experimental study on the behavior of FRP-confined normal- and high-strength concrete under axial compression. A total of 24 aramid and carbon FRP-confined concrete cylinders with different concrete strengths and FRP jacket thicknesses were tested under monotonic and cyclic loading. Examination of the test results has led to a number of significant conclusions in regards to both the trend and ultimate condition of the axial stress-strain behavior of FRP-confined concrete. These results are presented, and a discussion is provided on the influence of the main test parameters in the observed behaviors. The results are also compared with two existing cyclic axial stress-strain models for FRP-confined concrete.
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Information
Published In
Journal of Composites for Construction
Volume 16 • Issue 4 • August 2012
Pages: 451 - 463
Copyright
© 2012. American Society of Civil Engineers.
History
Received: Aug 14, 2011
Accepted: Dec 8, 2011
Published online: Dec 10, 2011
Published in print: Aug 1, 2012
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