Table 1: Chemical composition of fly ashes.

ConstituentNFA (%)MFA (%)

Silica (SiO2)50.9756.88
Alumina (Al2O3)18.8127.65
Ferric (Fe2O3)16.616.28
Calcium (CaO)9.003.62
Magnesium (MgO)1.410.34
Titanium (TiO2)0.280.31
Potassium (K2O)0.230.27
Sodium (Na2O)0.180.19
Loss on ignition2.604.46