Table 1: Physical and chemical analyses of RHA and FA.

ItemsRHAClass-F fly ash
FAASTM C618

Physical properties
 Specific gravity2.182.08
 Mean particle size (μm)15.121.8
 Blaine fineness (m2/kg)705665
 Loss on ignition (%)2.672.01
 ColorBlack
Chemical composition (%)
 SiO2 (S)95.663.9
 Al2O3 (A)20.0
 Fe2O3 (F)0.246.64
 S + A + F95.8490.54Min: 70%
 CaO0.73.84
 MgO1.25Max: 5%
 SO30.151.32
 P2O50.520.46
 TiO20.021.22
 Na2O
 K2O2.661.08