Reinforced Concrete T-Beams Strengthened in Shear with Fiber Reinforced Polymer Sheets
Publication: Journal of Composites for Construction
Volume 7, Issue 4
Abstract
This research studies the interaction of concrete, steel stirrups, and external fiber reinforced polymer (FRP) sheets in carrying shear loads in reinforced concrete beams. A total of eight tests were conducted on four laboratory-controlled concrete T-beams. The beams were subjected to a four-point loading. Each end of each beam was tested separately. Three types of FRP, uniaxial glass fiber, uniaxial carbon fiber, and triaxial glass fiber, were applied externally to strengthen the web of the T-beams, while some ends were left without FRP. The test results show that FRP reinforcement increases the maximum shear strengths between 15.4 and 42.2% over beams with no FRP. The magnitude of the increased shear capacity is dependent not only on the type of FRP but also on the amount of internal shear reinforcement. The triaxial glass fiber reinforced beam exhibited more ductile failure than the other FRP reinforced beams. This paper also presents a test model that is based on a rational mechanism and can predict the experimental results with excellent accuracy.
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Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 7 • Issue 4 • November 2003
Pages: 302 - 310
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Jul 12, 1999
Accepted: Oct 21, 2002
Published online: Oct 15, 2003
Published in print: Nov 2003
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