Freeze-Thaw Effects on Stability of Open Pit Slope in High-Altitude and Cold Regions

Table 2

Freeze-thaw coefficients of rock samples.

Number of freeze-thaw cycles	Average saturated compressive strength (MPa)
	Coarse sandstone	Fine sandstone	Muddy siltstone
0	1	1	1
30	0.87	0.95	0.82
60	0.81	0.76	0.66
90	0.71	0.69	0.56
120	0.62	0.63	0.47