Ferrochrome ash, a byproduct of the ferrochrome manufacturing process, is emerging as a supplementary cementitious material (SCM) for use in concrete production. Rich in silica and alumina, ferrochrome ash can enhance the mechanical properties and durability of concrete, similar to how fly ash and slag are used. Its utilization not only offers a sustainable disposal method for this industrial waste but also reduces the environmental footprint of concrete production by partially replacing Portland cement, which is a significant source of CO 2 emissions.