Laboratory Investigation on the Effects of Natural Fracture on Fracture Evolution of Granite Exposed to Freeze-Thaw-Cyclic (FTC) Loads

Figure 8

Depict of the changes of natural fracture aperture with F-T cycles. (a) Closed-type natural fracture; (b) opened-type natural fracture; (c) filled-type natural fracture.

(a)

(b)

(c)