Table 2: Chemical composition of quicklime, Portland cement, slag, cement clinker, and dihydrate gypsum (wt%).

CaOSiO2Al2O3Fe2O3SO3MgO

Quicklime 81.12 0.49 0.09 0.04 0.01
Portland cement 59.82 24.13 6.35 3.57 2.24 0.98
Slag 37.68 30.46 14.95 1.12 1.95 9.9
Cement clinker 63.83 21.48 4.72 3.63 0.67 3.70
Dihydrate gypsum 42.87 4.2 0.25 0.05 44.22 1.17