Research Article
The Physicomechanical Deterioration Characteristics and Mesoscopic Damage Analysis of Sandstone under Acidic Environment
Table 6
Damage variables of the intermediate scanning layer of rock samples at different time intervals in different solutions.
| Soaking time | Corrosion time (days) | Damage variables (D) |
| pH = 1 H2SO4 | 30 | 0.1935 | 60 | 0.2825 | 90 | 0.3416 | 180 | 0.5038 |
| pH = 3 H2SO4 | 30 | 0.1412 | 60 | 0.2135 | 90 | 0.2614 | 180 | 0.3507 |
| pH = 5 H2SO4 | 30 | 0.1308 | 60 | 0.1754 | 90 | 0.2097 | 180 | 0.2813 |
| pH = 1 HCl | 30 | 0.2123 | 60 | 0.3014 | 90 | 0.3602 | 180 | 0.5184 |
| pH = 3 HCl | 30 | 0.1685 | 60 | 0.2310 | 90 | 0.2732 | 180 | 0.3713 |
| pH = 5 HCl | 30 | 0.1385 | 60 | 0.1886 | 90 | 0.2301 | 180 | 0.2988 |
|
|