Durability Study on High Calcium Fly Ash Based Geopolymer Concrete

Table 1

Chemical Composition of Class C fly ash.

Elements	Silicon dioxide; (SiO2)	Aluminium oxide; (Al2O3)	Ferric oxide; (Fe2O3)	Calcium oxide; (CaO)	Magnesium oxide; (MgO)	Sodium oxide; (Na2O3)	Sulphur trioxide; (SO3)	Loss of ignition; (LOI)
Composition, % tested	25.69	17.10	9.43	24.54	4.06	1.62	4.25	0.5
Specified as per ASTM	25–42	15–21	5–10	17–32	4–12.5	0.8–6.0	0.4–5.0	0.1–1.0