Comparative Experimental Study on Strength Properties of Red Clay Modified by Cement and Industrial Solid Waste Powder

Table 2

Chemical composition of the red clay and the SS, FA, and GGBS used in this study.

Chemical composition	Content (%)
	Red clay	FA	SS	GGBS
Calcium oxide (CaO)	0.74	47.40	41.22	59.31
Silicon dioxide (SiO2)	52.99	15.82	6.32	16.31
Aluminum oxide (Al2O3)	18.78	10.67	2.88	10.24
Ferric oxide (Fe2O3)	13.48	4.96	22.44	1.46
Magnesium oxide (MgO)	1.04	4.49	5.68	5.63
Sulfate oxide (SO3)	0	—	0.59	—
Sodium oxide (Na2O)	0.07	0.65	0.37	0.43
Potassium oxide (K2O)	5.06	0.96	0.33	0.57
Phosphorus pentoxide (P2O5)	0.08	0.06	—	—
Manganese oxide (MnO)	0.17	0.37	3.80	1.00
Zirconia (ZrO2)	0.52	0.32	0.14	0.45
Chloride (Cl)	0	1.24	0.06	0.06
Sulfur (S)	0.02	1.78	—	1.22
Strontium oxide (SrO)	0.06	0.67	0.17	0.67
Loss of ignition	4.97	8.20	12.77	—