Mechanical Properties and Acoustic Emission Characteristics of Karst Limestone under Uniaxial Compression

Figure 13

Fracture propagation type and AE characteristic. (a) Vertical tension fractures. (b) Vertical tension fractures with local shear plane. (c) Shear-tension mixed fractures. (d) Corrosion pore spalling.

(a)

(b)

(c)

(d)