Table 2: Chemical Properties of cement.

Parameter Chemical Content (%) ASTM C 150 Limits
SiO2 20.98 -
Al2O3 5.67 -
Fe2O3 2.374 -
MgO 0.8 Maximum of 6%
SO3 3.45 Maximum of 3.5%
Loss of ignition 2.85 Maximum of 3.0%
P2O5 0.407 -
Na2O 0.4 -
CaO 65.519 -
Sr 0.176 -