Table 1.

Chemical compositions of the materials used in the mixtures.

Composition (wt. %)	Metakaolin	Fly Ash	Chamotte	WG 1	WG 2
SiO2	55.01	49.82	53.95	24.90	23.22
Al2O3	40.94	24.67	42.15
Fe2O3	0.55	7.05	1.25
CaO	0.55	3.91	0.13
MgO	0.14	2.68	0.18
Stotal	0.34	0.91
Na2O	0.09	0.70	0.05	18.47	12.25
K2O	0.60	2.78	0.75