Study on Preparation of Coal Gangue-Based Geopolymer Concrete and Mechanical Properties

Table 2

Main chemical components of fly ash.

Compositions	SiO2	Al2O3	CaO	K2O	Na2O	MgO	Fe2O3	TiO2	SO3
Contents	62.02	11.29	6.07	1.63	0.13	1.56	5.19	1.00	1.04