TO STUDY THE AFFECT OF SILICA FUME AND STEEL FIBER ON STRENGTH OF CONCRETE BY PARTIAL REPLACEMENT OF CEMENT

Abstract

In this work evaluate the performance of concrete with silica fume and also replace cement by steel fiber. Silica fume use as a mineral admixture in the concrete work for improves the workableproperties and strength properties of concrete in this study use ordinary Portland cement (43 Grade). In this study silica fume has beenreplacedin ordinary Portland cement(43 Grade) cement,which vary2.5% to 10% at an interval of 2.5% by weight of ordinary Portland cement43 Grade and also steel fiberreplaced inordinary Portland cementwhich varies 2.5% to 10% at an interval of 2.5% by weight of OPC cement. A total24 mixes (trial mix, control mix and variation mix) were prepared for M35concrete &M40of concrete. In this study examine the performance of Cube Compressive strength for 7days and 28 days,Beam Flexural strength28 days and Cylinder Splitting tensile strengthfor 28 days respectively. Total numbercubesspecimen140, cylinders 60 and beams60, which were cast for influence of silica fume and steel fiberon concrete. These Concrete cubes, beams, cylinders specimens were cured in waterunder normal atmospheric temperature. On the basis of result thatsilica fume and steel fiberconcrete was found to increase in all strength and durability of variation mix of concrete on all age when compared to normal concrete.Its use should be promoted for better performance as well as for environmental sustainability.