Acoustic Emission Waveform Analysis of Sandstone Failure with Different Water Content

Table 1

Physical parameters and experimental results of samples.

Sample no.	Density (before water absorption) (g/cm^3)	Soaking time (h)	Water content (%)		Uniaxial compressive strength (MPa)		Elastic modulus (GPa)		Total AE energy (aJ)
			Value	Mean	Value	Mean	Value	Mean	Value	Mean
A-1	2.30	0	0	0	40.70	42.02	8.68	8.84	312621	324275
A-2	2.31	0	0		42.23		8.73		342312
A-3	2.30	0	0		43.12		9.12		317892
B-1	2.31	0.50	1.03	1.03	35.64	33.48	6.90	6.54	212348	214161
B-2	2.31	0.50	1.01		31.34		6.44		203412
B-3	2.31	0.50	1.05		33.45		6.27		226723
C-1	2.30	2.00	2.05	2.04	29.14	28.10	5.90	5.28	167364	158423.67
C-2	2.30	2.00	2.04		27.14		5.03		149214
C-3	2.31	2.00	2.03		28.03		4.91		158693
D-1	2.31	5.00	3.17	3.14	20.91	22.86	3.81	4.05	133603	124167.33
D-2	2.31	5.00	3.11		23.32		4.13		127967
D-3	2.30	5.00	3.14		24.34		4.21		110932