Coupling Effect of Strain Rate and Freeze-Thaw Temperature on Dynamic Mechanical Properties and Fractal Characteristic of Saturated Yellow Sandstone

Table 1

Experimental result of dynamic compressive mechanical behavior for yellow sandstone under different temperatures and strain rates.

Number	Temperature (°C)	Strain rate (s^-1)	Average value (s^-1)	Dynamic compressive strength (MPa)	Peak strain (10^-3)	Elastic modulus (GPa)	DE (J)
1	25	72.51	74.22	70.41	5.02	34.42	30.13
2	-5	74.57		67.16	6.70	23.48	27.81
3	-10	76.00		61.83	7.84	13.46	24.77
4	-15	73.87		53.55	8.55	9.13	23.52
5	-20	75.02		44.97	10.40	7.97	24.20
6	-30	73.95		36.39	11.72	3.68	20.19
1	25	92.35	91.64	76.49	6.61	35.36	48.64
2	-5	91.58		73.68	8.16	17.46	43.55
3	-10	91.10		66.20	9.14	11.91	38.93
4	-15	92.47		62.92	10.36	5.69	34.00
5	-20	91.93		56.84	11.91	4.83	34.45
6	-30	90.41		47.49	15.50	3.08	30.69
1	25	116.94	118.22	90.94	6.61	23.92	72.22
2	-5	118.27		85.67	8.70	21.56	61.74
3	-10	119.33		82.46	10.26	17.71	54.54
4	-15	118.93		74.85	12.44	9.45	49.74
5	-20	117.86		70.76	13.57	7.63	46.08
6	-30	117.99		60.23	17.30	6.42	44.74
1	25	168.43	169.41	92.42	8.61	23.46	85.47
2	-5	169.35		90.38	11.04	12.48	82.66
3	-10	170.39		86.30	12.09	10.33	78.87
4	-15	169.47		82.22	14.00	8.82	66.74
5	-20	168.98		76.09	15.57	8.53	63.41
6	-30	169.84		65.02	19.57	7.70	54.23