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Abstract
Plain concrete has low tensile strength, less ductility, destructive and brittle failure. In order to improve these properties of plain concrete, an attempt has been made to study the effect of addition of polypropylene fibre, coir fibre in the weight of Ordinary Portland Cement and also replacement of silica fume in weight of Ordinary Portland Cement for concrete. In this experimental investigation polypropylene fibre, coir fibre in different percentage from 0 to 2% additional with weight of
cement and also silica fume in different percentage from 0 to 20 % replacement with weight of cement will be studied for the effect on mechanical properties like compressive strength, split tensile strength and flexural strength for M40 grade of concrete at 3, 7, 28 days.