Triaxial Creep Behavior of Red Sandstone in Freeze-Thaw Environments

Table 2

Results of the conventional triaxial compression tests of red sandstone after freezing-thawing.

Freeze-thaw cycles	Specimen number	Confining pressure (MPa)	Dry density (g/cm^3)	P wave velocity (m/s)	Uniaxial compressive strength (MPa)	Elastic modulus (GPa)
0	24-13	0	2.23	1169	7.25	1.09
	24-49	2	2.23	1174	20.67	2.41
	24-38	4	2.23	1191	27.53	3.24
	24-5	6	2.23	1197	31.61	4.27
1	24-51	0	2.23	1137	6.07	0.80
	24-47	2	2.23	1238	19.13	2.27
	24-15	4	2.24	1220	25.82	3.15
	24-18	6	2.23	1280	29.97	3.66
5	25-8	0	2.23	1280	5.03	0.71
	24-14	2	2.24	1291	17.79	1.90
	25-1	4	2.24	1274	24.23	2.06
	25-7	6	2.24	1281	28.35	2.31
9	25-13	0	2.24	1258	4.52	0.61
	25-9	2	2.24	1273	16.86	1.65
	25-14	4	2.24	1271	23.19	1.76
	25-11	6	2.24	1249	27.79	2.04
13	25-12	0	2.25	1289	4.32	0.60
	25-3	2	2.25	1293	16.51	1.44
	25-2	4	2.25	1317	22.68	1.65
	25-10	6	2.25	1302	27.47	1.85