Deterioration and Microstructural Evolution of the Fly Ash Geopolymer Concrete against MgSO₄ Solution

Table 2

Chemical compositions of OPC and fly ash.

	SiO2	Al2O3	CaO	Fe2O3	MgO	K2O	P2O5	TiO2	Na2O	LOI
OPC	18.63	2.49	71.70	2.62	3.24	0.48	/	0.84	/	4.75
Fly ash	74.18	9.44	5.53	4.22	2.48	1.46	1.41	0.96	0.32	0.82

The value presented is the weight percentage. LOI: loss on ignition.