Properties―Fly ash

Result (%)

Class-F

ASTM

C 618

Requirements as per IS:3812

Fly ash

Siliceous

Calcareous

Silica Content (SiO2)

60.7

-

35 min

25 min

Alumina Content (Al2O3) and Ferric Oxide (Fe2O3)

32.19

-

-

-

Silica + Alumina + Ferric Oxide [(SiO2) + (Al2O3) + (Fe2O3)]

92.89

70 min

70 min

50 min

Calcium Oxide (CaO)

1.79

-

-

-

Magnesium Oxide (MgO)

0.66

-

5 max

5 max

Sulphur Tri Oxide (SO3)

0.50

5.0 max

3 max

3 max

Loss of Ignition

1.05

6.0 max

5 max

5 max

Chloride

-

-

0.05 max

0.05 max