Fracture Morphology Analysis of Frozen Red Sandstone under Impact

Figure 18

Fracture morphology of red sandstone at different temperatures: (a) 25°C, red sandstone, ×150; (b) 5°C, red sandstone, ×150; (c) −10°C, red sandstone, ×150; (d) −20°C, red sandstone, ×150; (e) −30°C, red sandstone, ×150; (f) −40°C, red sandstone, ×150.

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