FRCM Strengthening of Corrosion-Damaged RC Beams Subjected to Monotonic and Cyclic Loading
Publication: Journal of Composites for Construction
Volume 26, Issue 1
Abstract
An experimental investigation assessed the effectiveness of carbon and polyparaphenylene benzobisoxazole (PBO) fabric-reinforced cementitious matrix (C-FRCM and PBO-FRCM) systems in rehabilitating reinforced concrete beams affected by corrosion of the tensile steel reinforcement. Thirteen reinforced concrete beam specimens were tested using a four-point bending setup under monotonic and cyclic loading. The FRCM strengthening of the corrosion-damaged specimens significantly increased the yield and ultimate capacity. The FRCM composites efficiency was demonstrated under cyclic loading; the restoration of the beams’ strength is maintained over the cyclic life. The FRCM strengthening systems were capable of extending the cyclic life up to five times in comparison with nonstrengthened control beam. The rehabilitated beams maintained their stiffness during the cyclic loading, indicating that FRCM-strengthening systems efficiently resist cyclic loads.
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Acknowledgments
This research was partially funded by the Natural Sciences and Engineering Research Council of Canada (NSERC) grant. The FRCM products were provided by Ruredil. This support is acknowledged.
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Journal of Composites for Construction
Volume 26 • Issue 1 • February 2022
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© 2021 American Society of Civil Engineers.
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Received: Feb 2, 2021
Accepted: Oct 13, 2021
Published online: Nov 24, 2021
Published in print: Feb 1, 2022
Discussion open until: Apr 24, 2022
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