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

Table 3

Chemical composition in % of ash and of metakaolin.

Material	SiO2	Al2O3	CaO	Fe2O3	Na2O	MgO	TiO2	P2O5	Loi
Ash	42.531	16.399	19.005	7.081	0.941	0.264	0.897	0	12.882
Metakaolin	53.36	43.58	0	0.6	0.33	0	1.51	0.13	0.49