Freeze-Thaw Cycle Effect on Sputtering Rate of Water-Saturated Yellow Sandstone under Impact Loading

Table 1

Physicomechanical parameters of sandstone under different freeze-thaw temperatures.

Freezing and thawing temperature T (°C)	Number	σs (MPa)		εs (10^−3)		Es (GPa)
		Single sample	Average value	Single sample	Average value	Single sample	Average value
25	T0-1	34.56	34.82	13.25	13.62	4.61	4.43
	T0-2	34.18		13.52		4.41
	T0-3	35.72		14.09		4.27
−5	T1-1	30.78	30.57	13.68	14.29	4.15	4.28
	T1-2	29.39		14.47		4.23
	T1-3	31.54		14.73		4.47
−10	T2-1	29.38	30.29	15.34	15.26	3.81	3.99
	T2-2	30.82		15.12		4.04
	T2-3	30.67		15.31		4.12
−15	T3-1	27.54	28.57	15.52	15.51	3.44	3.35
	T3-2	29.19		15.87		3.15
	T3-3	28.98		15.13		3.45
−20	T4-1	25.41	26.43	17.54	17.34	3.35	3.06
	T4-2	26.09		17.07		2.95
	T4-3	27.79		17.41		2.87
−30	T5-1	25.41	24.39	18.86	18.71	2.72	2.80
	T5-2	23.66		19.00		2.58
	T5-3	24.09		18.26		3.10

Note: σ_s is the uniaxial compressive strength, ε_s is the peak strain, and E_s is the elastic modulus.