Research Article
Study on Relationship between UCS of Cemented Tailings Backfill and Weight Losses of Hydration Products
Table 4
Relationship model of strength and weight losses of hydration products.
| Type of CTB | Concentration (%) | The model equation | R2 |
| GP-CTB | 65 | Rc = 0.0256 + 1.8251x1 | 0.8749 | 68 | Rc = −0.3204 + 2.3223x1 | 0.7867 | 70 | Rc = −0.2756 + 2.4557x1 | 0.9087 | 72 | Rc = 0.3006 + 2.6276x1 | 0.8008 | 75 | Rc = −1.1966 + 4.7837x1 | 0.7415 | 78 | Rc = 0.8783 + 5.0632x1 | 0.7046 |
| OPC-CTB | 65 | Rc = −1.0637 + 0.9820x1 + 2.7345x2 | 0.7834 | 68 | Rc = −1.9223 + 1.8580x1 + 2.0974x2 | 0.8040 | 70 | Rc = −0.7184 + 0.9294x1 + 3.2307x2 | 0.7692 | 72 | Rc = −2.5127 + 2.4890x1 + 3.1285x2 | 0.8084 | 75 | Rc = −4.1528 + 3.9300x1 + 5.3372x2 | 0.8343 | 78 | Rc = −3.2128 + 2.8356x1 + 6.7251x2 | 0.8319 |
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Rc is the UCS of CTB, MPa; x1 is the weight loss of C-S-H gel, %; x2 is the weight loss of Ca(OH)2, %; R2 is the correlation coefficient.
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