INVESTIGATION OF REINFORCED CONCRETE BEAMS BY INCORPORATING POLYPROPYLENE FIBRE REINFORCED POLYMER COMPOSITES

Worldwide, massive research is currently conducted concerning to exploit the fibre reinforced sheets and laminates in the strengthening and repair of Reinforced Concrete members. Fiber-reinforced polymers (FRP is a beneficial way to strengthening and repair structures for those which have become structurally frail over their lifespan. In this project, the experimental investigation conducted on polypropylene fibre of length 12mm and 24mm, having an aspect ratio of around 800 was employed in an equal percentage of 0.5% by weight in cast concrete and tests like compressive strength on cubes, flexural strength on beams and split tensile strength on cylinders conducted. Moreover, the outcome shows the ordinary concrete has the deficient tensile strength and a small resistance to cracking. Internal cracks were primarily present in concrete, and its weak tensile strength is due to the propagation of such microcracks. Fibers added to a certain percentage of concrete improves strain value and also crack resistance and flexure strength.