This assignment explores the use of copper tailings as a substitute for natural river sand in concrete mixes. The study evaluates various properties of concrete incorporating copper tailings, including pull-off strength, drying shrinkage, chloride permeability, sulphate attack resistance, alkalinity, flexural strength, compressive strength, and abrasion resistance. The findings suggest that incorporating copper tailings into concrete mixtures can enhance durability and strength, making it a viable option for construction applications.