Table 1.

Chemical composition and physical properties of GGBS and GWS.

Characteristics	GGBS (wt. %)	GWS (wt. %)
Chemical Composition
Silica	27–38	72.04%
Aluminum oxide	7–12	14.42%
Iron oxide	0.2–1.6	1.68%
Calcium oxide	34–43	1.82%
Magnesium oxide	0.15–0.76	0.71%
Titanium oxide	-	0.30%
Phosphorous	-	0.12%
Sulfates	1.0–1.9	-
Alkali oxide	-	-
Loss of ignition	1.9	0.29
Physical Properties
Specific Gravity	2.91	2.59
Specific Surface Area	400 m2/kg	370 m2/kg