JCE_V4_N2_RP3 Binaya Patnaik Seshadri Sekhar Tirumala P. Srinivasa Rao Journal on Civil Engineering 2249 - 0779 4 2 20 24 Copper slag, Control Mix, Fine aggregate, Compressive Strength, Replacement of Sand The rapid urbanization and natural resources scarcity had created a huge demand for non-conventional resources in the construction industry. Copper slag, which is a by-product obtained during the refining and metal smelting process of Copper Ore having Silica (SiO2) as a major composition, could potentially be used as a partial replacement of Sand in the manufacturing of Concrete. In the present Experimental Investigation, for M30 grade of Concrete, fine aggregate (River Sand) was partially replaced with Copper Slag from 0% to 50% and compressive strength at the ages of 28 & 90 days were investigated. Finally, mathematical equations were derived for compressive strength at 28 & 90 days with percentage of Copper Slag used as partial replacement of Fine aggregate in copper slag admixed concrete. March - May 2014 Copyright © 2014 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=2986