Laboratory Performance Evaluation of Copper Slag in Semi-dense Bituminous Concrete

In this research, the use the industrial waste, copper slag as the fine aggregate in the asphalt mix that has the properties similar to the natural sand having more toughness than the any other fine aggregate that can resist the wear and tear due to rubbing action of wheel on road surface. In this research, an attempt finds the possible use of copper slag by improving the engineering properties of asphalt mixes. The benefits of addition of copper slag as dosage 0–100% with increment of 10% by volume of aggregate on volumetric properties such as air voids, voids in mineral aggregate, and voids filled with bitumen and physical properties such as stability, flow, in asphalt mixes were investigated. The copper slag dosage of 30% dosage by volume of aggregate with an optimum bitumen content of 4.8% by weight of mix showed optimum performance.