Realistic Bond Strength of FRP Rebars in NSC from Beam Specimens
Publication: Journal of Aerospace Engineering
Volume 20, Issue 3
Abstract
The bond strength of reinforcing bars in concrete is a prerequisite for the evaluation of the development length in reinforced concrete structures. This study concerns these phenomena for fiber reinforced polymer (FRP) rebars in normal strength concrete (NSC). Three different types of rebars were tested using the beam specimen: Carbon, glass, and steel. This involved a total of 26 beam specimens containing 10, 16, and rebars. The test embedment lengths were 10, 15, and 20 times the rebar diameter . For each rebar tested, the results concern load deflection curves, bond stress-slip responses, and the mode of failure. The results showed that the bond strength of a FRP rebar is, generally, lower than that of steel rebar. Based on this and previous research, proposals for the average bond strength and for the development length of straight FRP rebars under tension in NSC are made.
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Acknowledgments
The writers wish to acknowledge Doug Gremel of Hughes Brothers for his cooperation and support in the form of material donations.
References
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Information & Authors
Information
Published In
Journal of Aerospace Engineering
Volume 20 • Issue 3 • July 2007
Pages: 133 - 140
Copyright
© 2007 ASCE.
History
Received: Mar 30, 2004
Accepted: Sep 25, 2006
Published online: Jul 1, 2007
Published in print: Jul 2007
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