A Study on the Performance of Hybrid Fibre Reinforced Concrete

Traditional concrete, made from binding material, fine aggregate, coarse aggregate, and water, often suffers from low tensile strength and susceptibility to cracking.Microscopic cracks can develop before any significant load is applied, making the structure vulnerable to damage.Fiber reinforced concrete (FRC) tackles these issues by adding different types of fibers, like steel, glass, and polypropylene, to enhance strength and flexibility.This study aims to find the best mix for Steel Fiber Reinforced Concrete (SFRC) and Hybrid Fiber Reinforced Concrete (HFRC) of M25 grade.Compressive strength, split tensile strength, flexural strength, Young's modulus, and ultrasonic pulse velocity tests are conducted to see how well the fibers work to prevent cracks and boost strength.Results have showed that SFRC with 1.5% steel fiber content significantly improve compressive strength, split tensile strength, and flexural strength compared to normal concrete.Similarly, HFRC mix of steel, glass, and polypropylene fibers, performs well, showing a notable increase in split tensile and flexural strength.The percentage increase in strength highlights how effective fiber reinforcement can be, with HFRC showing better results in some aspects compared to SFRC.Furthermore, both SFRC and HFRC are stiffer than normal concrete, indicating better overall structural integrity.Our comparison suggests that incorporating a blend of fibers, as seen in HFRC, can provide even better results, particularly in enhancing split tensile and flexural strength, showing promise for future reinforced concrete applications.