Impact of Moisture Content on the Brittle-Ductile Transition and Microstructure of Sandstone under Dynamic Loading Conditions

Table 2

Effect of moisture content on dynamic peak strain, dynamic peak strength, and dynamic elastic modulus.

Specimen	ω (%)	(‰)		(MPa)		Ed (GPa)
		Sample	Average	Sample	Average	Sample	Average
1	0.00	1.24	1.23	170.72	167.94	18.03	18.03
2		1.35		165.89		16.37
3		1.11		167.22		19.7
1	2.01	1.29	1.32	143.37	150.16	15.25	17.78
2		1.35		155.98		18.11
3		1.33		151.13		19.97
1	2.23	1.36	1.4	122.09	119.82	13.59	11.89
2		1.43		120.82		12.03
3		1.42		116.56		10.06
1	2.40	1.45	1.49	96.44	101.77	7.37	8.48
2		1.41		99.65		8.72
3		1.61		109.23		9.34
1	2.49	1.78	1.73	81.43	79.67	6.33	6.05
2		1.66		83.1		6.57
3		1.75		74.49		5.26
1	2.53	1.83	1.84	64.89	68.10	4.86	5.18
2		1.84		68.1		5.67
3		1.89		71.3		5.01
1	2.58	2.02	2.08	45.07	46.84	2.72	2.80
2		2.06		46.66		2.74
3		2.16		48.8		2.95