Review of Design Guidelines for FRP Confinement of Reinforced Concrete Columns of Noncircular Cross Sections
Publication: Journal of Composites for Construction
Volume 12, Issue 1
Abstract
Current international design guidelines provide predictive design equations for the strengthening of reinforced concrete (RC) columns of both circular and prismatic cross sections by means of fiber-reinforced polymer (FRP) confinement and subjected to pure axial loading. Extensive studies (experimental and analytical) have been conducted on columns with circular cross sections, and limited studies have been conducted on members with noncircular cross sections. In fact, the majority of available research work has been on small-scale, plain concrete specimens. In this review paper, four design guidelines are introduced, and a comparative study is presented. This study is based on the increment of concrete compressive strength and ductility and includes the experimental results from six RC columns of different cross-sectional shapes. The observed outcomes are used to identify and remark upon the limits beyond the ones specifically stated by each of the guides and that reflect the absence of effects not considered in current models. The purpose of this study is to present a constructive critical review of the state-of-the-art design methodologies available for the case of FRP-confined concrete RC columns and to indicate a direction for future developments.
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Acknowledgments
The writers would like to acknowledge the funding and support received from: National Science Foundation (supplement Grant No. NSF0453808), MAPEI S.p.A. in Milan (Italy), NSF Industry/University Cooperative Research Center on Repair of Buildings and Bridges with Composites , and the University Transportation Center on Advanced Materials and NDT Technologies based at the University of Missouri-Rolla (UMR).
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Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 12 • Issue 1 • February 2008
Pages: 80 - 92
Copyright
© 2008 ASCE.
History
Received: May 2, 2006
Accepted: Aug 17, 2006
Published online: Feb 1, 2008
Published in print: Feb 2008
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