Mechanical Characteristics and Mesostructural Damage of Saturated Limestone under Different Load and Unload Paths

Figure 8

Mesopore structure of bound water and free water in L22 and L32 rock samples. ③ and ⑤ show the pore structure of bound water in the two rock samples after the test. ④ and ⑥ show the free-water pore structures after the test. ① and ② show the bound-water and free-water pore structures before the test.