Concrete is strong in compression but weak in tension and brittle also. Cracks also start forming as soon as the concrete is placed. These above-said drawbacks don’t permit the use of normal concrete in pavements as they lead to a lack of ductility along with fracture and failure. These weaknesses in concrete can be mitigated by using fibers as reinforcement in the concrete mix. Waste materials in the form of polyethylene and tires cause environmental pollution which leads to various health problems. Polyethylene and waste tires can be reused and used efficiently in the concrete as reinforcement in the fiber form. Polyethylene is a synthetic hydrocarbon polymer which can improve the ductility, strength, shrinkage characteristics. This study deals with the effects of addition of polyethylene fiber on the properties of concrete. In this study, Polyethylene and tire fibers were cut into the size of 25mm x 8mm and they were used 1.5% each by volume. Grades of concrete used were M 30, M 35 and M 40. IRC 44:2008 was followed for the design of concrete mix. In this study, the results of the strength properties of Polyethylene fiber reinforced concrete have been presented. Four-point bending and double shear test were performed in the laboratory for flexure and shear strength determinations. There was seen an increase of 18% in the 28-day compressive strength along with an increase of 39% in flexure Strenght and 32% in shear strength. It is also found that 22% reduction in the four-point bending test and 36% reduction in deflection by double shear tests were initiated out from the experiments. Theoretical analysis of deflection was carried out with the help of energy methods. Practical values were verified with the theoretical values within the allowable limits. Finally, it is concluded that polyethylene and tire used efficiently in reinforced cement concrete.
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