Abstract: This paper describes the experimental study of fibre reinforced concrete with manufacturing sand (M-Sand) in addition of crimped steel fibres. Normally a huge quantity of concrete is required for the construction but we know that concrete is weak in tension and strong in compression and the fine aggregate that normally used for concrete is natural river sand but our aim is to replace the natural sand by artificial sand (manufactured sand) and to increase the compressive and tensile strength of the concrete by addition of steel fibre .To over-come the difficulties due to excessive sand mining, M-Sand is used as fine aggregate. M-Sand is uniformly in size, produced from gravel crushers. The main objective of this research is to investigate the effect of steel fibres on concrete manufactured by M-sand as fine aggregate and develop a concrete. It is proposed to determine and compare compressive strength, tensile strength and flexural strength of the concrete grades M30 having different percentage of steel fibre 1%, and 10%, 20%, 30%, 40% and 50% by weight of M-sand added by weight of fine aggregates. Concrete cubes, cylinders and beams are tested at the age of 3, 7 and 28 days of curing. Finally the strength performance of slag blended concrete is compared with the performance of conventional concrete.

Keywords : Steel fiber, M-sand, compression test and split tensile test, flexural strength.

| DOI: 10.17148/ IARJSET.2022.9623