Experimental Study on Mechanical Damage and Fracture Characteristics of Granite under Different Water Cooling Conditions

Figure 7

Time evolutions of stress, acoustic emission ringing count rate, and cumulative ring-down count during loading. (a) Room temperature, (b) temperature drop of 10°C, 4 cycles, (c) temperature drop of 10°C, 8 cycles, (d) temperature drop of 20°C, 12 cycles, (e) temperature drop of 15°C, 4 cycles, (f) temperature drop of 15°C, 8 cycles, (g) temperature drop of 15°C, 12 cycles, (h) temperature drop of 20°C, 4 cycles, (i) temperature drop of 20°C, 8 cycles, (j) temperature drop of 20°C, 12 cycles.

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