Author : Kalyani R Kothule 1
Date of Publication :7th July 2016
Abstract: Civil structures made of steel reinforced concrete normally suffer from corrosion of the steel by the salt, which results in the failure of those structures. Constant repairing and maintenance is needed to enhance the life cycle of those civil structures. There are many ways to minimize the failure of the concrete structures made of steel reinforce concrete. The custom approach is to adhesively bond fiber polymer composites onto the structure. This also helps to increase the toughness and tensile strength and improve the cracking and deformation characteristics of the resultant composite. The main aim of this experiment is to study the strength properties of polypropylene fiber concrete for M20 grade with 0%, 1.5%, 5%, 7.5% and 10% by weight of concrete. Experimental program consisted of compressive strength test, split tensile strength test and flexural strength tests on conventional concrete and polypropylene fiber concrete. Polypropylene Fiber Concrete is an embryonic construction material which can be described as a concrete having high mechanical strength, Stiffness and durability. By utilization of Polypropylene fibers in concrete not only optimum utilization of materials is achieved but also the cost reduction is achieved. The samples with added Polypropylene fibers of 1.5 % showed better results in comparison with the others. The influence of polypropylene fibers has been studied in different proportioning and fiber length to improve the performance characteristics of the lightweight cement composites. Fibers used in length of 12mm by cement weight in the mixture design. Hardened concrete properties such as: 7days, 21 days and 28 days compressive strength, splitting tensile strength, flexural strength, water absorption, and shrinkage were evaluated. Fiber addition was seen to enhance the physical and mechanical properties of lightweight concrete. Hence this hybrid fiber reinforced concrete with industrial waste fibers is doubly advantageous as it provides a superior performance without increasing the cost of the concrete
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