Dynamic Mechanical Properties and Damage Mechanism of Freeze-Thaw Sandstone under Acid Corrosion

Table 1

Test results of samples at different pH values and impact speeds.

No.	pH	(m·s^-1)	(s^-1)	(MPa)	(10^-3)	(GPa)
1	7.0	5.5	66.2	33.6	16.4	1.4
2	7.0	6.0	89.5	34.1	16.9	1.3
3	7.0	7.0	120.3	35.9	17.3	1.33
4	7.0	7.8	133.5	38.5	17.9	1.5
5	5.8	5.5	71.8	32.8	17.5	1.08
6	5.8	6.0	97.1	33.3	18.1	1.22
7	5.8	7.0	107.7	35.0	18.7	1.23
8	5.8	7.8	142.6	37.4	19.1	1.28
9	3.2	5.5	68.4	30.1	19.9	0.87
10	3.2	6.0	86.6	31.9	20.6	0.91
11	3.2	7.0	118.3	34.1	21.0	1.05
12	3.2	7.8	147.7	37.1	22.1	0.99
13	1.1	5.5	75.9	28.8	22.4	0.76
14	1.1	6.0	93.1	30.9	23.6	0.78
15	1.1	7.0	115.3	33.3	24.3	0.75
16	1.1	7.8	145.6	36.2	25.0	0.80