Behavior of concrete beams reinforced with GFRP bars
DOI:
https://doi.org/10.6008/CBPC2179-6858.2021.003.0019Keywords:
Beams, Concrete, Composite material, GFRP bars, BendingAbstract
This work focuses on structural behavior of concrete beams reinforced with glass fiber reinforced polymer (GFRP) bars. From an experimental program, 6 (six) reinforced concrete beams of 150 mm x 150 mm x 1500 mm in dimensions were subjected to four-point flexural test. The varied parameters in these beams were the material of the bars (steel or GFRP) and the longitudinal reinforcement ratio (0.88% and 2.02%). The average value of concrete compressive strength was 25 MPa. The values of deflection, strain of reinforcement (transverse and longitudinal) and concrete, and crack width in the pure flexion span were monitored until the beams rupture. The results showed that the GFRP beams showed resistance close to that of the steel bars beams. Because of the lower flexural stiffness, the values of deflection and crack width of GFRP beams were higher than those of steel bars beams.
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