One-Way Shear Behavior of Lightweight Concrete Panels Reinforced with GFRP Bars
Publication: Journal of Composites for Construction
Volume 16, Issue 1
Abstract
Corrosion of steel bars used in reinforced concrete bridge decks exposed to moisture and deicing salts is of concern. The chloride-induced corrosion of steel reinforcement increases the maintenance cost of the structure. The resistance of glass fiber reinforced polymer (GFRP) reinforcing bars to corrosion provides a viable alternative to steel reinforcement. Lightweight concrete allows structural members to have a reduced weight, which is advantageous for lifting and moving operations when precast concrete elements are used. This paper evaluates the one-way shear capacity of lightweight concrete panels reinforced with GFRP reinforcement. Three normal weight concrete and three lightweight concrete specimens reinforced with identical GFRP reinforcement details were tested to failure. The results of the tests are compared with the shear strength predictions of the American Concrete Institute (ACI) 440.1R-06 recommendations and a theoretical model based on the modified compression field theory.
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Acknowledgments
The writers would like to acknowledge the financial support of the Utah Department of Transportation and the Expanded Shale, Clay and Slate Institute. They would also like to acknowledge the contribution of Hughes Bros Inc., Utelite Corporation, and Hanson Structural Precast. The writers would like to acknowledge the invaluable contributions of Professor Lawrence D. Reaveley and Mark Bryant of the Univ. of Utah in the experimental portion of the research.
References
American Association of State and Highway Transportation Officials (AASHTO). (2009). AASHTO load resistance factor design (LRFD) bridge design guide specifications for GFRP reinforced concrete bridge decks and traffic railings, 1st Ed., Washington, DC.
American Concrete Institute (ACI). (2006). “Guide for the design and construction of structural concrete reinforced with FRP bars.” ACI 440.1R-06, Farmington Hills, MI.
American Concrete Institute (ACI). (2008). “Building code requirements for structural concrete and commentary.” ACI 318-08; 318 R-08, Farmington Hills, MI.
Bentz, E. C., and Collins, M. P. (2006). “Development of the 2004 Canadian Standards Association (CSA) A23.3 shear provisions for reinforced concrete.” Can. J. Civ. Eng. CJCEB8, 33(5), 521–534.
Hoult, N. A., Sherwood, E. G., Bentz, E. C., and Collins, M. P. (2008). “Does the use of FRP reinforcement change the one-way shear behavior of reinforced concrete slabs?” J. Compos. Constr. JCCOF2, 12(2), 125–133.
Utelite Corporation. (2010). “What is utelite lightweight aggregate?” 〈http://www.utelite.com/about_us.html〉 (Sep. 9, 2009).
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Information
Published In
Journal of Composites for Construction
Volume 16 • Issue 1 • February 2012
Pages: 2 - 9
Copyright
© 2012. American Society of Civil Engineers.
History
Received: Jan 25, 2011
Accepted: Jun 14, 2011
Published in print: Feb 1, 2012
Published online: Apr 27, 2012
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