Experimental Investigation on the Strength Enhancement of High Strength Concrete Using Polypropylene Fibers Alternatives

This research focuses on enhancing the mechanical properties of high-strength concrete (HSC) through the incorporation of Polypropylene (PP) fibers. The objective of this study is to analyze the effects of different fiber percentages (3%, 4%, and 5%) on the compressive, split tensile, and flexural strength of M60 grade concrete. The inclusion of PP fibers aims to improve ductility, crack resistance, and overall structural integrity. Experimental results indicate that the mechanical properties of concrete significantly improve with the addition of PP fibers up to 5%. The compressive strength increased by approximately 7.9%, split tensile strength by 9.6%, and flexural strength by 8.2% compared to conventional concrete. This study concludes that PP fiber reinforcement effectively enhances the strength and durability of high-performance concrete, making it a viable material for advanced structural applications.

Keywords: Polypropylene fiber, high-strength concrete, compressive strength, tensile strength, flexural strength, fiber reinforcement.