Experimental Study of the Dynamic Mechanical Behavior and Degradation Mechanism of Red Sandstone in Acid Dry-Wet Cycles

Table 1

SHPB test results of red sandstone in different environments.

pH		No.	Diameter (mm)	Height (mm)	Dynamic UCS (MPa)	Elastic modulus (GPa)
—	0	DC1-0	49.60	30.06	188.35	18.65
7	5	DC1-5	49.48	29.50	179.22	15.91
7	10	DC1-10	49.60	30.21	167.08	14.46
7	20	DC1-20	49.70	30.02	156.29	13.17
7	30	DC1-30	49.83	29.40	143.37	12.29
7	40	DC1-40	49.20	29.58	130.76	11.42
4.5	5	DC2-5	48.36	30.04	163.66	14.13
4.5	10	DC2-10	49.48	30.02	148.56	13.05
4.5	20	DC2-20	49.85	30.02	132.83	12.24
4.5	30	DC2-30	49.51	29.50	116.55	11.06
4.5	40	DC2-40	49.60	29.52	102.61	10.83
2.5	5	DC3-5	49.64	28.46	145.60	13.42
2.5	10	DC3-10	49.70	28.62	130.53	12.25
2.5	20	DC3-20	48.50	29.68	108.01	10.74
2.5	30	DC3-30	48.86	29.86	90.12	9.92
2.5	40	DC3-40	49.45	30.05	76.61	9.31