Case Study of a High-Performance Concrete Bridge in Tennessee
Publication: Practice Periodical on Structural Design and Construction
Volume 11, Issue 4
Abstract
This paper presents a case study on a high-performance concrete (HPC) bridge in Tennessee. The bridge is a twin bridge with high-strength concrete (HSC) beams in one bridge lane and normal-strength concrete (NSC) beams in the other bridge lane. The compressive strength of HSC and NSC were and , respectively. The bridge was instrumented for strains and temperatures in precast beams, cast-in-place decks, and diaphragms during various construction stages. Test results presented in this paper include temperature changes in the concrete, time-dependent strains and cambers of precast HSC and NSC beams, and strain changes of deck and diaphragm. It was observed that the HSC members exhibited rapidly developed early-age creep and shrinkage strains, rapidly developed time-dependent cambers, and apparent differential shrinkage relative to the deck concrete. Recommendations for design and construction of HSC bridges are also presented in the paper.
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Acknowledgments
The writers would like to gratefully acknowledge the financial support of the Tennessee Department of Transportation for this research project. The authors would also like to thank many individuals who provided assistance during the study, particularly Henry Pate, Mark Holloran, Cabrina Dieters, and David Sisson from the TDOT; and Dr. L. K. Crouch and Rick Maxwell from Tennessee Tech University. The cooperation and support of Ross Prestressed Concrete Company and Charles Blalock & Sons Construction Company are greatly appreciated.
References
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Information & Authors
Information
Published In
Practice Periodical on Structural Design and Construction
Volume 11 • Issue 4 • November 2006
Pages: 229 - 237
Copyright
© 2006 ASCE.
History
Received: Apr 21, 2005
Accepted: May 26, 2005
Published online: Nov 1, 2006
Published in print: Nov 2006
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