Microscopic Characteristics of Fractured Sandstone after Cyclic Freezing-Thawing and Triaxial Unloading Tests

Figure 10

The characteristics of the azimuthal angle in (a) the intercrystalline crack, (b) the transcrystalline crack, and (c) the intracrystalline crack under freezing-thawing cycles.

(a)

(b)

(c)