Stimulations study on composite reinforced concrete beams

Abstract

Fiber-reinforced polymer (FRP) reinforcements have seen a significant rise in usage in concrete buildings over the past ten years, thanks to their superior corrosion resistance, high tensile strength, and non-magnetization characteristics. However, due to the low modulus of elasticity of the FRP materials and their non-yielding properties, significant deflection and broad fractures are seen in the FRP reinforced concrete components under consideration. As a result, the design of such members may be influenced by serviceability needs in many instances. Flexural stresses are applied to FRP reinforced concrete members in this study, which results in the deflection of the members. The current study focuses on the behavior of concrete beams reinforced with glass fiber reinforced polymer (GFRP) and carbon fiber reinforced polymer (CFRP) bars of various surface geometries with different reinforcement ratios using nonlinear finite element analysis in ABAQUS. Three different cross-sections of CFRP and GFRP bars were scrutinized. From the finite element modeling it was observed that increasing reinforcement ratio of CFRP bars compared to steel and GFRP reinforced beams. Because of low modulus of elasticity causes GFRP reinforced concrete members to deflect more than steel or CFRP reinforced concrete members. It is observed that load bearing capacity of FRP reinforced beam are higher that steel reinforced beams.