Spent Blast Media (SBM) refers to materials such as sand, grit, or other abrasive compounds used in blasting operations to clean or prepare surfaces for painting or other treatments. When these materials become contaminated, typically with heavy metals, hydrocarbons, or other hazardous substances, they pose significant environmental risks. In the context of concrete, SBM contamination can occur when recycled materials or aggregates containing residues from SBM are used in concrete mixtures. The mechanism of contamination generally involves the leaching of hazardous substances into the mix, potentially affecting the chemical reactions during the cement hydration process and altering the physical properties of the hardened concrete.