Research Article
Mechanical Properties of the Hard Sandstone Fracture Surface under Hydrochemical Corrosion
Table 2
Comparison chart of porosity changes of specimens under different state conditions before and after corrosion.
| | Specimen number | Hydrochemical environment (%) | Specimen status (d) | Initial porosity (%) | Porosity after soaking (%) | Porosity change rate (%) |
| | 1 | 0 | 15 | 2.7604 | 4.6299 | 0.6772 | | 2 | 1 | 15 | 2.6137 | 5.1087 | 0.9545 | | 3 | 3 | 15 | 2.8173 | 6.3733 | 1.2622 | | 4 | 5 | 15 | 2.1207 | 7.9512 | 2.7493 | | 5 | 10 | 15 | 2.1363 | 9.0723 | 3.2467 | | 6 | 0 | 30 | 2.3703 | 4.3091 | 0.8180 | | 7 | 1 | 30 | 2.9716 | 5.7341 | 0.9296 | | 8 | 3 | 30 | 2.5059 | 7.6134 | 2.0382 | | 9 | 5 | 30 | 2.9578 | 8.7809 | 1.9687 | | 10 | 10 | 30 | 2.7126 | 9.2914 | 2.4253 |
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