Copper slag is an industrial by-product produced during the pyro-metallurgical extraction of copper metal from copper concentrate. In this study, mix design of M25 grade of concrete was carried out by using crushed stone aggregates and river sand ascoarse and fine aggregates respectively. In the designed concrete, fine aggregates were replaced with copper slag by 10%, 20%, 30% & 40%, by weight and blended mixes were prepared. The compressive strength and flexural strength tests were carried out on control mix and blended mixes. The experimental results showed that compressive and flexural strength of concrete increased by the replacement of fine aggregates up to 20% by copper slag, but beyond that got decreased. On the basis of present research, it has been concluded that copper slag can be utilized by the partial replacement of fine aggregates in the tune of 20% in M25 grade of
concrete. The utilization of this industrial by-product in concrete can solve the dumping problem of copper industries and can be a step towards ustainable construction.
Copper Slag, Concrete, Fine Aggregates, Compressive Strength, Flexural Strength