Research Article
Experimental Research on Mechanical Properties of High-Temperature Sandstone with Different Cooling Methods
| | Density before heating(g/cm3) | Average density before heating(g/cm3) | Density after heating(g/cm3) | Average density after heating(g/cm3) | Kρ (%) |
| C | 2.443 | 2.445 | — | — | — | 2.444 | — | 2.448 | — |
| N | 2.44 | 2.441 | 2.403 | 2.406 | 1.43 | 2.443 | 2.407 | 2.439 | 2.408 |
| W | 2.438 | 2.439 | 2.397 | 2.398 | 1.68 | 2.439 | 2.398 | 2.44 | 2.4 |
| R | 2.442 | 2.444 | 2.405 | 2.407 | 1.51 | 2.445 | 2.408 | 2.445 | 2.408 |
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