Research Article
Effects of Different Ratios of Fly Ash and River Sand on Mechanical Properties of Cemented Paste Backfill Materials
Table 2
Chemical composition of raw materials, in weight %.
| | Raw materials | SiO2 | Al2O3 | K2O | Fe2O3 | CaO | MgO | Na2O | Others |
| | OPC | 16.54 | 17.16 | 0.11 | 10.12 | 49.46 | 1.03 | 0.57 | 5.01 | | CG | 40.36 | 24.3 | 0.94 | 4.97 | 22.7 | — | — | 6.73 | | FA | 47.24 | 16.49 | 0.19 | 12.4 | 9.73 | 1.88 | 0.95 | 11.12 | | RS | 65.6 | 12.33 | 3.01 | 2.55 | 3.26 | 1.59 | 1.12 | 10.54 |
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