Effect of Magnesium Sulphate on Self-Compacting Concrete Containing Supplementary Cementitious Materials

Table 2

Chemical composition of binder materials.

Constituents (wt %)	OPC	RHA	(FA)	GGBS
SiO2	16.5	90.55	41.29	35
Fe2O3	3.633	0.91	12.36	0.52
CaO	69.43	1.23	1.0	40
MgO	1.29	0.44	2.62	8
K2O	0.489	5.52	2.49	0.46
SO3	4.23	0.81	3.0	2.09
Al2O3	3.65	0.67	23.59	11.72
LOI	2.14	2.62	6	1.42
Physical properties
Specific surface area (m²/kg)	320	350	570	450
Specific gravity	3.14	2.15	2.6	2.1