Experimental Performance of AFRP Concrete Bridge Deck Slab with Full-Depth Precast Prestressed Panels
Publication: Journal of Bridge Engineering
Volume 19, Issue 4
Abstract
While application of full-depth precast bridge deck panels may be appealing because of an accelerated construction schedule and improved safety conditions, corrosion of steel reinforcement is a major factor affecting the structural durability of precast panels and overall serviceability of a bridge deck. Herein, the concept of using aramid fiber reinforced polymer (AFRP) bars as a substitute for conventional steel reinforcement to overcome corrosion issues is verified. For this purpose, a full-scale bridge deck slab consisting of full-depth precast panels reinforced and prestressed with AFRP bars is constructed and experimentally evaluated in terms of load capacity, deformation, crack pattern, and failure mode. The precast panels are reinforced and prestressed in parallel and perpendicular to the traffic directions, respectively, and supported by reinforced concrete beams. Realistic dimensions, boundary conditions, and structural details are physically modeled to represent an actual bridge deck condition, and different concentrated load configurations including wheel and tandem axle loads are applied on both the slab interior span and overhang. The experimental results show the average failure load of the interior spans and overhangs, respectively equal to 3.9 and 1.4 times the maximum factored wheel load, where the deflection serviceability criteria are met and satisfactory deformability performance is achieved.
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Acknowledgments
This research was supported by a grant from the National Science Foundation (NSF 0927333). The authors would like to express appreciation for the generous support from NSF to conduct this research. The findings and opinions presented herein are those of the authors and are not necessarily those of the sponsoring agency. The support provided by the High-Bay Structural and Materials Testing Laboratory at Texas A&M University, where the experimental investigation was conducted, is greatly appreciated.
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Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 19 • Issue 4 • April 2014
Copyright
© 2013 American Society of Civil Engineers.
History
Received: May 1, 2013
Accepted: Sep 23, 2013
Published online: Sep 25, 2013
Published in print: Apr 1, 2014
Discussion open until: May 17, 2014
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