Research Article
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 |
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