Fatigue of Concrete Beams Strengthened with Glass-Fiber Composite under Flexure
Publication: Journal of Composites for Construction
Volume 15, Issue 4
Abstract
A detailed investigation on the fatigue performance of concrete beams strengthened with glass-fiber composite (GFC) is performed in this study. Cyclic load tests were conducted on reinforced concrete beam specimens strengthened with two layers of GFC bonded to the beams’ bottom surface using a special epoxy resin. Midspan-deflection and cracks were measured at different numbers of load cycles and varying fatigue loading levels during the tests. Investigated parameters include total midspan-deflection, residual midspan-deflection after unloading, crack width, crack length, and crack distribution at different loading stages. The fatigue performance of concrete beams strengthened with GFC was evaluated by comparing the deflections, crack sizes, and crack distributions with unstrengthened beams. The concrete beams strengthened with GFC investigated in this study showed significant improvement on fatigue performance.
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Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 15 • Issue 4 • August 2011
Pages: 557 - 564
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Feb 3, 2010
Published online: Nov 1, 2010
Accepted: Nov 4, 2010
Published in print: Aug 1, 2011
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