Response of mono and hybrid fiber concrete material and flexural members: A review

One of the most essential and widely used materials in construction is concrete. When it is used in flexural members, it is frequently required to have very high strength and sufficient workability. Research studies from around the world are working to create concrete with high performance by incorporating different types of fibers. The previous studies showed that implementing steel fibers in concrete leads to increase toughness, flexural strength, splitting tensile, and durability. While using glass and Polypropylene fibers led to the lower enhancement of concrete’s compressive strength, they enhanced toughness, significantly splitting tensile strength and flexural strength. The mechanical results of hybrid reinforced self-consolidating concrete mixes are superior to those of other mixes except the splitting tensile strength is found that be reduced in hybrid fiber-reinforced specimens compared to concrete with steel fiber. Utilizing fibers in beams showed an enhancement in the flexural performance (cracking behavior, post-cracking flexural stiffness, flexural strength, and deflection capacity) when the increase of reinforcement ratio was up to minimum reinforcement. Fibers are controlled cracks in beams. Steel fibers improve the RC beam’s first crack load and toughness by 34.5% and 40.5%, respectively. The response to applied load for hybrid fiber flexural members is found to be analogous to steel fiber members.