Study on the shear performance of hybrid reinforced concrete beams made with FRP rebars

A feasible replacement for steel reinforcement is offered in reinforced-concrete construction Steel reinforcing corrodes with time, lowering the capacity of a reinforced concrete structure. Some concrete structures have utilized composite fiber reinforced polymer (FRP) reinforcement as a steel substitute; however, this corrosion-resistant alternative comes at the expense of the structure’s flexibility. FRP reinforcement is now manufactured in a linear elastic (or brittle) state till failure. The suggested hybrid rebar is made up of multiple types of fibers that fail at different strains during the rebar’s load history, allowing for gradual rebar failure. Experiments on concrete beams reinforced with glass fiber reinforced polymer are described in this paper (GFRP) The effect of mixing GFRP bars was explored in detail, and the independent behavior of GFRP reinforced beams was evaluated. In addition, existing analytical methods for predicting the shear strength of GFRP and steel fiber reinforced beams were examined and compared. Based on the findings, the best model for predicting the shear strength of GFRP reinforced beams with steel fibers were chosen and changed.