INFLUENCE OF STEEL FIBERS AND PARTIAL REPLACEMENT OF SAND BY IRON ORE TAILINGS ON THE COMPRESSIVE AND SPLITTING TENSILE STRENGTH OF CONCRETE

In this work, the effects of steel fibers and partial replacement of sand by iron ore tailings (IOT) on the compressive and splitting tensile strength of concrete are experimentally studied. The mix proportions used for concrete are 1:1.43:2.94. The percentages of steel fibers by weight of cement used were 0.0, 0.5, 0.7, 0.9, 1.0, 1.2, 1.4, 1.6, 1.8 and 2.0. The sand replacement (by IOT) percentages used were 0, 5, 10, 20, 25, 30 and 35.C ompressive strength tests were conducted on 150 mm size concrete cubes and splitting tensile strength tests on 150 mm diameter and 300 mm length concrete cylinders as per Bureau of Indian Standard s specifications.