Experimental Study on the Effect of Large Temperature Difference on Compressive Strength and Pore Structure of Semirigid Base

Figure 7

SEM images of specimens damaged by compression after 12 cycles at different temperature intervals. (a) 20°C∼60°C (×5000 times). (b) −5°C∼−30°C (×5000 times). (c) 20°C∼−20°C (×5000 times).

(a)

(b)

(c)