Study on Mechanical Properties and Acoustic Emission Characteristics of Sandstone under Freezing and Thawing

Figure 13

Axial stress-strain curve. (a) Group A specimens. (b) Group B specimens. (c) Group C specimens. (d) Group D specimens. (e) Group E specimens. (f) Group F specimens.

(a)

(b)

(c)

(d)

(e)

(f)