Table 1.

Chemical composition of materials (wt %).

Component	CKD1	CKD2	GBFS	MS
CaO	44.72	50.10	41.91	52.26
SiO2	16.35	12.10	35.16	1.12
Al2O3	4.95	4.26	10.76	0.37
Fe2O3	2.93	2.21	1.40	0.11
MgO	3.12	1.67	7.68	0.87
SO3	5.72	17.16	1.92	–
Na2O	0.93	1.26	0.11	0.14
K2O	4.90	5.83	0.14	0.10
Cl−	1.78	0.65	–	–
Alkali equivalent	4.02	4.92	0.18	–
Free-CaO	4.61	13.40	–	–
LoI *	23.30	9.16	1.78	40.74

* Loss on Ignition.