Experimental Investigation on Conctrete by Adding Recron 3S Fibre

This study investigates the impact of Recron 3S fiber addition on the mechanical properties of M20 grade concrete, aiming to enhance its strength, durability, and crack resistance. Recron 3S, a synthetic micro-fiber, was incorporated into concrete mixes at varying percentages (0%, 0.25%, 0.50%, 0.75%, and 1% by weight of cement), and the resulting properties were compared with conventional concrete. Fresh and hardened properties, including workability, compressive strength, split tensile strength, and flexural strength, were evaluated through laboratory testing on casted cubes and cylinders at 7, 14, and 28 days of curing. The results demonstrate that the inclusion of Recron 3S fibers significantly improves the tensile and flexural strength of concrete, effectively reducing crack formation and enhancing impact resistance. Notably, the split tensile and flexural strength showed considerable improvements with the addition of fibers. However, an increase in fiber content slightly reduced the workability of the concrete mix, necessitating potential adjustments in water content or admixture dosage. The study concludes that incorporating Recron 3S fibers is an effective method to enhance the mechanical performance of concrete, making it suitable for applications demanding enhanced durability and crack resistance, such as pavements, bridges, and industrial floors. This research contributes to the development of high-performance fiber-reinforced concrete, offering a cost-effective solution for improving the properties of conventional concrete and promoting sustainable and durable construction practices, supporting the growing trend of utilizing fibers for composite fortification due to their high strength and thermal resistance. Keywords:Recron 3S fibers, fiber-reinforced concrete, compressive strength, tensile strength, flexural strength, durability, crack resistance, workability, M20 concrete, sustainable construction.