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Concrete made with Portland cement has strong compressive strength but it has weak tensile strength and it tends to be brittle. Also cracks start to develop as soon as concrete is placed and before it has properly hardened which may lead to weakening of concrete structures, fracture and failure and general lack of durability. Thus this research is aimed at reducing the aforementioned shortcomings of concrete to increase its applicability and performance. The tensile strength of concrete could be enhanced by using conventional rod reinforcements and to a certain extent by the inclusion of a sufficient volume of fiber. Addition of fibers also leads to a reduction in shrinkage cracking. We have used steel fibers as reinforcements and Polypropylene as the fiber.

Effect of Polypropylene Fibres on Flexural Strength of M30 Grade Concrete