Table 1.

A brief summary of the constituents of geopolymers.

Constituents	Composition	Temperature [°C]	Time [Days]	Chemicals	Compressive Strength [MPa]	References
Coal fly ash & metakaolin	-	250	3	NaOH	-	[34]
Fly ash, GGBFS & zeolite	Al/Si	32	1	NaOH	100	[35]
Coal fly ash	Al/Si	80	1	NaOH	18	[36]
Fly ash	SiO2/Al2O3	85	3	KOH	19	[37]