Stress–Strain Behavior of Large-Scale Circular Columns Confined with FRP Composites
Publication: Journal of Structural Engineering
Volume 132, Issue 1
Abstract
For a reliable and efficient design of fiber reinforced polymer (FRP) wrapping reinforcement, an accurate stress–strain prediction of reinforced concrete (RC) columns confined with FRP composites is essential. The stress–strain characteristics of FRP-confined concrete have been extensively studied, testing small-scale cylindrical specimens. In this paper, the stress–strain response of axially loaded large-scale columns confined with FRP wrapping reinforcement is investigated. The effective circumferential FRP failure strain and the effect of increasing confining action on the stress–strain behavior of RC columns confined with FRP are examined. Different models for the prediction of the stress–strain behavior of FRP-confined concrete have been reviewed. The existing stress–strain models are applied to predict the stress–strain response of the experimental results presented in this study. A comparison between the experimental results and those predicted by the existing models are presented. Few of the available models that were derived based on small-size cylinders were found to accurately predict the stress–strain response of large-scale columns.
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Acknowledgments
The writers wish to acknowledge the financial support provided by the IWT (Institute for the Promotion of Innovation by Science and Technology in Flanders). The financial support provided by Magnel Laboratory and Ghent University to support the sabbatical leave of the second author, Dr. Toutanji, is also greatly acknowledged. In addition, the writers would like to thank Fortius, Syncoglas, ECC, Resiplast, and S&P companies for their contributions of materials.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 132 • Issue 1 • January 2006
Pages: 123 - 133
Copyright
© 2006 ASCE.
History
Received: Nov 25, 2003
Accepted: Mar 10, 2005
Published online: Jan 1, 2006
Published in print: Jan 2006
Notes
Note. Associate Editor: Jin-Guang Teng
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