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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