Flexural Behavior of Concrete Beams Reinforced with Hybrid (GFRP and Steel) Bars
Publication: Journal of Composites for Construction
Volume 13, Issue 5
Abstract
Reinforcing concrete with a combination of steel and glass fiber-reinforced polymer (GFRP) bars promises favorable strength, serviceability, and durability. To verify its promise and to support design of concrete structures with this hybrid type of reinforcement, we have experimentally and theoretically investigated the load-deflection behavior of concrete beams reinforced with hybrid GFRP and steel bars. Eight beams, including two control beams reinforced with only steel or only GFRP bars, were tested. The amount of reinforcement and the ratio of GFRP to steel were the main parameters investigated. Hybrid GFRP/steel-reinforced concrete beams with normal effective reinforcement ratios exhibited good ductility, serviceability, and load carrying capacity. Comparisons between the experimental results and the predictions from theoretical analysis showed that the models we adopted could adequately predict the load carrying capacity, deflection, and crack width of hybrid GFRP/steel-reinforced concrete beams.
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Acknowledgments
This work was funded by National Basic Research Program of China (973 Program) (Grant No. UNSPECIFIED2009CB623204) and National Natural Science Foundation of China (Grant No. NNSFC50178050). The writers thank Dr. Shengdong Zhang and Dr. Guangjing Xiong for their help in revising this paper.
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Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 13 • Issue 5 • October 2009
Pages: 350 - 359
Copyright
© 2009 ASCE.
History
Received: Jun 24, 2008
Accepted: Feb 27, 2009
Published online: Mar 6, 2009
Published in print: Oct 2009
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