Research Article
The Effect of Calcium Formate, Sodium Sulfate, and Cement Clinker on Engineering Properties of Fly Ash-Based Cemented Tailings Backfill
Table 2
Chemical composition of tailings and fly ash used.
| Composition (wt.%) | SiO2 | Al2O3 | Fe2O3 | MgO | CaO | FeO | K2O | TiO2 | Na2O | MnO | SO3 | Ignition loss |
| Tailings | 79.99 | 2.54 | 8.04 | 2.04 | 2.78 | 1.16 | — | — | 0.31 | 0.013 | — | 3.127 | Fly ash | 43.77 | 19.05 | 5.85 | 4.41 | 10.84 | 0.71 | 2.46 | 1.38 | — | — | — | 8.45 | Cement | 20.34 | 5.02 | 3.11 | 1.09 | 64.78 | — | 0.35 | 0.26 | 0.10 | — | 2.20 | 1.73 | Cement clinker | 22.56 | 4.40 | 3.04 | 1.82 | 67.42 | — | 0.13 | — | 0.27 | — | — | 0.36 |
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