50 Kg Dalmia DSP 53 Grade Cement is engineered for high-strength applications like roofs, columns, and foundations. Made with high-quality clinker, processed fly ash, gypsum, and additives, its key feature is high reactive silica. This silica reacts with liberated lime to form additional "CSH" gel, a process called secondary hydration. This fills pores in the concrete, significantly reducing permeability and protecting it from water damage and chemical penetration, resulting in exceptionally strong and durable structures.