Research Article
The Physicomechanical Deterioration Characteristics and Mesoscopic Damage Analysis of Sandstone under Acidic Environment
Table 5
Fitting parameters of relationship between peak strain and soaking time.
| Mechanical parameters | Soaking solution | a | b | c | d | R2 | Soaking solution | a | b | c | d | R2 |
| Peak strain (10−3) | pH = 1 H2SO4 | 0.994 | 22.038 | 83.858 | 45.153 | 0.996 | pH = 1 HCl | 1.377 | 22.463 | 82.427 | 40.169 | 0.995 | pH = 3 H2SO4 | 3.072 | 13.205 | 60.410 | 25.065 | 0.996 | pH = 3 HCl | 1.823 | 13.899 | 56.229 | 34.521 | 0.980 | pH = 5 H2SO4 | 3.149 | 11.845 | 61.572 | 26.602 | 0.996 | pH = 5 HCl | 3.098 | 12.411 | 63.538 | 27.143 | 0.996 | pH = 7 H2O | 3.015 | 9.534 | 73.119 | 42.502 | 0.999 | — | — | — | — | — | — |
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