Abstract

In the study, various Fiber Reinforced Plastic (FRP) bars and the flexural behavior of hybrid beams formed by placing concretes produced with different fibers in glass reinforced plastic (GFRP) box profiles were investigated. Hybrid beams were formed by placing polypropylene, steel and glass fiber concretes into GFRP box profile. In addition, flexural tests were performed using carbon, aramid, glass, basalt and steel bars in the tensile zone for each beam type. The load-deflection and moment curvature graphs of the hybrid beams were drawn, and their flexural strength, fracture toughness, stiffness and ductility were calculated and compared. The performances of the FRP bars and fiber type were interpreted and analyzed. The results were evaluated under two headings as the effects of bar type and fiber type on hybrid beam behavior. It was determined that the highest contribution to hybrid beam behavior is provided by carbon fiber reinforced plastic (CFRP) bar in terms of bar types by 70% and steel fiber concrete in terms of fiber concrete types by 53% in flexural strength.

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