Study on Scope of Copper Slag in Concrete as Partial Replacement of Natural Sand

This study focuses on the use of copper slag in concrete as partial replacement of natural sand. Encourage the waste product as a construction material is the main objective of this work. Copper slag is a waste material which is being obtained during by-product matte smelting, converting and refining of copper. In this work, we used the I.S method for mix design and M25 grade for concrete. We prepared concrete mixtures for making cubes with different proportion of copper slag and sand ranging from (0%CS+100%S), (10%CS+90%S), (20%CS+80%S), (25%CS+75%S), (30%CS+70%S), (35%CS+65%S), (40%CS+60%S), (45%CS+55%S), (50%CS+50%S), (55%CS+45%S), (60%CS+40%S). The curing was done for 7, 14, 28 days. From the above test result we found that after 7 days, the compressive strength of concrete was less than the compressive strength of conventional concrete. But compressive strength was increasing as we increases the replacement level of natural sand with copper slag. We also found that the compressive strength of copper slag concrete is maximum when we replace 45% of natural sand with copper slag and curing is done for 28 days.