Mechanical and Acoustic Emission Characteristics of Sandstone through Triaxial Unloading Test after Cyclic Freezing-Thawing Treatment

Figure 10

The counting rate and the accumulated AE energy of samples after (a) 0, (b) 20, (c) 40, (d) 60, and (e) 80 freezing-thawing cycles.

(a)

(b)

(c)

(d)

(e)