Development and Characterization of Norite-Based Cementitious Binder from an Ilmenite Mine Waste Stream

Table 5

Influence of GGBFS on the compressive strength of the binder. The specimens were cured at ambient pressure.

Specimen	Norite; (g)	GGBFS; (g)	Alkali sol.	Wt. of alkali sol. (g)	K2SiO3; (g)	Na2SiO3; (g)	L/S ratio	Curing temp.; (°C)	Curing time; (days)	Estimated compressive strength; (±2 MPa)
2	183	91	8 M NaOH	52	0	72	0.45	23	7	20
3	183	91	4 M KOH	53	72	0	0.46	23	7	26
4	248	40	10 M NaOH	61	61	0	0.42	87	1	5.0
4	248	40	10 M NaOH	61	61	0	0.42	87	5	9.0
4	248	40	10 M NaOH	61	61	0	0.42	87	7	9.0