An Assessment of Reuse of Light Ash from Bayer Process Fluidized Bed Boilers in Geopolymer Synthesis at Ambient Temperature

Table 1

Compositions formulated using fly ashes and metakaolin for obtaining geopolymers.

Geopolymers	Fly ash (mass %)	Metakaolin (mass %)	SiO2/Al2O3
1	100	0	4.4
2	94.24	5.76	4.11
3	90.39	9.61	3.94
4	84.62	15.38	3.72
5	75	25	3.4
6	69.2	30.8	3.23
7	61.54	38.46	3.041
8	53.85	46.15	2.87
9	42.31	57.69	2.65
10	34.62	65.38	2.52