CHEMICAL COMPOSITION OF CEMENT: MgO 3% max, SO3 2.8% max, Al2O3 5.7% max, SiO2 21.5% max, Fe2O3 4% max, CaO 64% max, LOI 1.5% max, Insoluble residue 0.7% max, LS.F 0.93% max, SM 2.4% max PHYSICAL COMPOSITION OF CEMENT: Blain 2.800 sm2/gm, Expansion 1-1.5 mm, Time of setting (minutes) Initial set 130-145-Final set 180-200, Compressive strength of Mortar Cubes 3 days 4200-4600 PSI,7 days 5200-5