Response Prediction of RC Beams Externally Bonded with Steel-Reinforced Polymers
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Volume 10, Issue 3
Abstract
This paper deals with an innovative technique for strengthening reinforced concrete (RC) structures using steel-reinforced polymer (SRP) materials. The results of an experimental campaign using RC beams strengthened in flexure with carbon fiber-reinforced polymer or SRP laminates are summarized, and the experimental outcomes are compared to the predictions provided by analytical models and code formulations in terms of flexural strength, curvature of the cross section, deflections, and crack widths. Under ultimate conditions, the ACI 440.2R-02 approach provided conservative flexural strength, and a modified expression for the bond coefficient was proposed. Under serviceability conditions, good agreement was obtained between experimental results and a theoretical model developed by the writers. Comparisons of code models in terms of both crack width and deflections highlighted the need for a calibration of code formulas to account for effects due to externally bonded reinforcement.
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Acknowledgments
The writers would like to thank Hardwire LLC, Pocomoke City, Maryland; Mapei Spa, Milan, Italy; and Sika Italia, Milan, Italy, for donating the steel tapes, FRP system, and epoxy resin/cementitious grout used to bond SRP, respectively.
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Information
Published In
Journal of Composites for Construction
Volume 10 • Issue 3 • June 2006
Pages: 195 - 203
Copyright
© 2006 ASCE.
History
Received: Nov 23, 2004
Accepted: Sep 6, 2005
Published online: Jun 1, 2006
Published in print: Jun 2006
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