The Effect of Acid Mine Drainage Corrosion on the Creep Deformation of Cemented Gangue Backfill

Table 10

Loading stages of given specimens.

Serial number	Medium-grained sandstone		Untreated CGB		CGB soaked in AMD
	Stress (MPa)	Lasting time (d)	Stress (MPa)	Lasting time (d)	Stress (MPa)	Lasting time (d)
1	2.47	5.02	0.76	5.04	4.16	5.69
2	5.01	10.00	1.56	9.99	5.21	7.74
3	7.50	2.08	2.35	1.98	6.25	7.01
4	9.99	3.71	3.12	2.07	8.34	2.29
5	12.51	2.38	3.91	2.10	10.42	3.79
6	15.00	6.65	4.69	2.02	12.50	2.31
7	17.49	4.28	5.48	2.87	13.54	5.59
8	20.01	7.72	6.24	3.78	14.58	2.19
9	22.5	11.26	7.03	4.28	15.62	6.70
10	24.99	33.71	7.81	3.89	16.68	6.51
11	29.98	2.20	9.37	3.84	17.71	2.76
12	40.00	0.04	12.49	7.97	18.76	3.16
13			15.63	15.39	19.79	5.76
14			18.75	6.83	20.83	6.12
15			21.87	12.20	21.90	15.12
16			25.00	19.68	22.96	2.07
17			28.13	17.16	23.00	4.07
18					23.95	10.02
19					25.01	10.60