Analysis of Changes in the Micromorphology of Sandstone Joint Surface under Dry-Wet Cycling

Table 6

Calculation results for shear strength of jointed rock masses under dry-wet cycling.

Number of dry-wet cycles (n)	Shear strength of jointed rock masses under dry-wet cycling
	1.0 MPa	1.5 MPa	2.0 MPa	2.5 MPa
0	1.287	1.774	2.229	2.662
1	1.221	1.687	2.123	2.538
3	1.171	1.621	2.042	2.443
5	1.109	1.536	1.936	2.317
8	1.055	1.463	1.844	2.207
12	1.005	1.393	1.757	2.103
16	0.963	1.336	1.685	2.017
20	0.954	1.324	1.670	1.998