Strength and Microscopic Damage Mechanism of Yellow Sandstone with Holes under Freezing and Thawing

Table 3

Damage degree of yellow sandstone with pores under freezing and thawing.

Freezing and thawing times	Hole diameter (mm)
	0	6	8	10	12
0	0.000	0.145	0.168	0.245	0.370
5	0.086	0.191	0.210	0.281	0.374
10	0.145	0.206	0.310	0.353	0.491
20	0.200	0.253	0.346	0.483	0.549
40	0.312	0.357	0.42	0.504	0.683