Research Article
Experimental Study of Macro- and Micro-Scopic Damage in Red Sandstone under Dry and Wet Cycling
Table 2
Deterioration analysis of uniaxial compression strength parameters of red sandstone.
| | Cycle stage (i) | Number of cycles (N) | Uniaxial compressive strength, σc (MPa) | Total loss of compressive strength in wet and dry cycles, (Phase i-1 loss ratio) | Elastic modulus, E (GPa) | Total loss of modulus of elasticity in dry and wet cycles, (Phase i-1 loss ratio) |
| | Ⅰ | 0 | 32.41 | 0 | 9.2 | 0 | | Ⅱ | 5 | 31.95 | 1.41 (1.41) | 9.3 | 1.08 (1.08) | | Ⅲ | 10 | 27.90 | 13.91 (12.50) | 7.45 | 20.82 (19.75) | | Ⅳ | 15 | 27.05 | 16.53 (2.61) | 7.51 | 20.10 (−0.71) | | Ⅴ | 25 | 17.30 | 46.62 (30.09) | 4.77 | 49.24 (29.13) |
|
|
