Experimental Investigation on Mechanical Properties of Hybrid Steel and Polyvinyl Alcohol Fiber Reinforced Concrete

The mechanical properties of hybrid fiber-reinforced composite concrete (HyFRCC) comprising varying amounts of steel fiber (SF) and Polyvinyl Alcohol fiber (PVA) are discussed in this study. The mechanical properties are studied in this study such as Concrete compressive cube strength and flexural strength. SF is known to improve flexural and tensile strengths, as well as prevent or minimize macro cracking patterns. Meanwhile, PVA increases tensile strain capacity and compressive strength, as well as delaying micro-cracks. Also, PVA increases tensile strain capacity and compressive strength, as well as delaying micro-cracks. This study used two hooked-end distorted varieties of SF fiber (65/35 for 3D and (65/60 for 5D) as well as PVA fiber with a 12 mm length. Also, grade C30 concrete strength is maintained. SF-PVA fiber percentages were varied between 0.0 percent, 0.50 percent, and 1.00 percent. According to the test results, the percentage proportion of SF (65/60 for 5D) fiber with 1.0 percent offered the maximum values of flexural strength, tensile strength, and flexural toughness. The 0.5 percent percentage of SF-PVA fibers helps to improve compressive strength when compared to ordinary concrete. Furthermore, the test findings revealed that the steel fibers' ability to regulate the crack spread of the specimens was demonstrated by the shift in failure mode from brittle to ductile