Utilization of Slag as an Aggregate Replacement for Road Base/Subbase Layers

Ferrochrome and Steel slags are by-products of the stainless steel and steel
production, respectively. The utilization of slag as an aggregate replacement to provide a
sustainable solution has gained attention from the construction industry in recent years. By
reducing the demand for natural aggregate and providing an alternative use for industrial waste
products, the use of slag is an environmentally conscious and economically viable option. This
paper focuses on the potential application of using slag as road base/subbase layers. The paper
examines the physical and chemical properties of the slag and reports on the strength and toxic
metal analysis results. Slag can be processed into a coarse and fine aggregate that satisfies the
necessary standards for road base/subbase layers. The testing results highlight the successfulness
of using slag as an aggregate replacement for base/subbase layers, making it a promising and
sustainable solution for the construction industry.