Production of Steel Fiber Reinforced Concrete with Different Mix Design Ratios

Concrete is a brittle material and in order to make it ductile steel is used. In the current project, steel fibers were used as an additive material by weight of sand. Tests were performed on three different design mix ratios, i.e., M1, M2 and M3 at 0%, 5%, 10% and 15%. Numerous physical tests were performed on the materials used. The slump test was performed in fresh state and compressive test was performed in the hardened state of concrete mixes. From the result of the slump test, it was concluded that workability decreased due to two reasons. The first reason was an increase in the percentage of steel fiber and the second reason was the difference in mix design ratio. The compressive strength increased at 5% in M1 and M2. On the contrary, the strength decreased in M3 at 5%. In all M3 mixes, the strength significantly decreased. Conclusively, the strength increases due to the crack bridging effect and it decreases due to weak bonding .