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The serviceability concerns, specially cracking and deflections usually govern the design of reinforced concrete deck slabs. This research program is designed to investigate the flexural behaviour of concrete one-way (deck) slabs reinforced with different types of FRP composite bars. A total of 7 full size slabs were constructed and tested. The slabs were 3100-mm long xlOOOmm wide x 200-mm deep. The test parameters are the type of FRP reinforcing bars as well as the reinforcement ratio. Three slabs were reinforced with glass FRP, three were reinforced with carbon FRP bars, and one control slab was reinforced with conventional steel. The slabs were tested under four-point bending over a simply supported clear span of 2500 mm and a shear span of 1000 mm. The test results are presented in terms of deflection, crack width, strains in concrete and reinforcement, ultimate capacity, and mode of failure. Comparison with the predictions of CAN/CSA-S806-02 Code and ACI 440.1R-01 design guidelines were also made.

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