Effect of Prestressing on the Performance of GFRP-Reinforced Concrete Slab Bridge Strips
Publication: Journal of Composites for Construction
Volume 17, Issue 2
Abstract
Deterioration of reinforced concrete structures caused by corrosion of steel reinforcement is currently a major concern affecting the safety and functionality of our infrastructure. Fiber-reinforced polymer (FRP) materials have shown tremendous potential as an alternative reinforcement for reinforced and prestressed concrete structures. FRPs have been used in a wide variety of structural applications, from reinforced concrete deck slabs to posttensioned parking garages. However, one promising application for FRP reinforcing bars which has yet to be investigated thoroughly is their use in reinforced concrete slab bridges. This paper presents the results of an experimental study on 10 full-scale glass FRP (GFRP)-reinforced slab bridge strips posttensioned with 0, 2, or 4 carbon FRP (CFRP) tendons with and without shear reinforcement. The tendons were either fully bonded or fully nonbonded to evaluate the effect of bond on the serviceability and ultimate performance of the slabs, particularly in terms of their deformability. Based on the test results, the addition of prestressed CFRP tendons resulted in significantly improved serviceability and ultimate load-carrying capacity with good deformability.
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Acknowledgments
The authors gratefully acknowledge the following: Dr. Ahmed El-Sayed, Assistant Professor at King Saud University for his invaluable assistance in the formative stages of this study; the staff at Hanson Pipe and Precast Company for their assistance in casting the test specimens; and the technical staff at the University of Waterloo for their assistance in the testing phase of this study. Financial support from NSERC is gratefully acknowledged.
References
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Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 17 • Issue 2 • April 2013
Pages: 188 - 196
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Apr 16, 2012
Accepted: Aug 9, 2012
Published online: Aug 22, 2012
Published in print: Apr 1, 2013
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