Abstract
ABSTRACT This research presents an experimental study on the flexural behavior of concrete beams reinforced with glass fiber-reinforced polymer (GFRP) bars and concrete beams reinforced with conventional steel reinforcements. A total of six full-scale beams (beam dimension of 150x250x2500 mm) reinforced with either steel or GFRP bars is investigated. The test variables include the tension reinforcement type (steel reinforcement grade [SD30 and SD40], GFRP bars). The flexural behavior including the load-deflection relationship, the flexural capacity, the stiffness, and mode of failure is investigated under a four-point loading test. The experimental results show that the maximum load of concrete reinforced with steel bars tended to increase as the steel strength increased. The maximum load of the concrete beams reinforced with GFRP bars was higher than the beams reinforced with steel bars up to 98%. However, the stiffness of the concrete beams reinforced with GFRP bars reduced when compared to the ones reinforced with steel bars.
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