Research Article
Strength Characteristics and the Reaction Mechanism of Stone Powder Cement Tailings Backfill
Table 2
Elemental composition of the tailings and the stone powder along with the chemical composition of Portland cement (%).
| | Elemental composition | O | Fe | S | Ca | Si | Mg | Al |
| | Tailings A | 34.699 | 23.098 | 15.857 | 14.025 | 4.476 | 2.117 | 1.113 | | Tailings B | 44.376 | 12.662 | 8.877 | 9.091 | 16.24 | 0.403 | 3.057 | | Stone powder | 58.301 | 0.942 | 0.298 | 23.279 | 14.901 | 0.471 | 1.273 |
| | Chemical composition | 3CaO·SiO2 | 2CaO·SiO2 | 3CaO·Al2O3 | 4CaO·Al2O3·Fe2O3 | | Portland cement | 52.8 | 20.7 | 11.5 | 8.8 |
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