Development of a Zero-Cement Binder Using Slag, Fly Ash, and Rice Husk Ash with Chemical Activator

Table 2

Chemical and physical properties of the materials (wt.%).

(a) Chemical properties and oxide compositions (%)

Materials	SiO2	Al2O3	Fe2O3	CaO	MgO	SO3	Na2O	K2O	P2O5	TiO2	MnO	LOI
Slag	33.75	16.76	0.55	45.40	6.71	1.29	0.12	0.44	—	—	—	3.10
FA	58.95	20.24	5.18	3.04	0.52	0.48	0.14	1.32	0.65	1.08	0.12	3.16
RHA	87.55	0.39	0.20	1.03	0.67	0.57	0.05	2.85	1.31	0.02	0.07	3.14
OPC	20.94	4.63	4.46	67.17	2.53	2.98	0.04	0.15	—	—	—	1.29
^*Z-Cem 1	43.41	17.91	2.39	28.22	4.05	0.92	0.13	0.78	—	—	—	3.13
^*Z-Cem 2	47.59	16.12	2.12	25.92	3.78	0.89	0.13	0.98	—	—	—	3.12
^*Z-Cem 3	51.76	14.33	1.86	23.62	3.50	0.86	0.12	1.17	—	—	—	3.11
^*Z-Cem 4	57.23	12.73	1.82	19.22	2.93	0.80	0.11	1.41	—	—	—	3.11
^*Z-Cem 5	43.70	15.54	1.43	32.21	4.66	1.00	0.12	0.84	—	—	—	3.09

Calculated values.

(b) Physical properties

	Specific gravity	Grain size (μm)			Fineness (m^2/gm)		Specific surface area (m^2/cm^3)	Pore volume (cm^3/gm)
					Blaine	BET
Slag	2.84	2.65	14.87	37.57	0.3935	1.98	1.155	0.00617
FA	2.42	3.27	14.45	64.33	0.3567	2.34	0.785	0.00444
RHA (UG)	1.96	1.99	8.80	38.75	0.5780	—	1.225	—
RHA (G)	2.09	1.66	6.72	29.20	0.6975	12.70	1.502	0.00674
OPC	3.15	3.34	16.79	47.37	0.2302	1.54	0.715	0.00312
Z-Cem 1	2.65	1.24	11.23	65.19	0.8529	—	1.83	—
Z-Cem 2	2.59	1.24	11.03	70.61	0.8507	—	1.87	—
Z-Cem 3	2.55	1.10	9.28	46.83	0.9309	—	2.03	—
Z-Cem 4	2.49	1.03	8.90	47.20	0.9503	—	2.09	—
Z-Cem 5	2.68	1.32	11.65	66.32	0.8326	—	1.80	—