Mechanical Behavior and Energy Evolution of Sandstone considering Slenderness Ratio Effect

Table 1

Uniaxial compression tests parameters and mean results.

Test number	Slenderness ratio	Peak strain (%)	Peak strength (MPa)	Elastic modulus (GPa)
0.5-1	0.5	3.26	73.86	37.85
0.5-2	0.5	3.24	73.14	36.92
0.5-3	0.5	3.33	75.55	35.96
0.5-mean	0.5	3.28	74.18	36.91
1-1	1	1.92	68.92	63.78
1-2	1	1.91	62.59	60.99
1-3	1	1.98	64.89	61.61
1-mean	1	1.94	65.47	62.13
1.5-1	1.5	1.42	57.97	64.01
1.5-2	1.5	1.36	61.69	69.24
1.5-3	1.5	1.29	60.76	72.20
1.5-mean	1.5	1.36	60.14	68.48
2-1	2	1.48	53.32	65.31
2-2	2	1.48	52.23	61.41
2-3	2	1.51	56.84	65.58
2-mean	2	1.49	54.13	64.10
3-1	3	1.11	48.64	64.58
3-2	3	1.20	51.46	77.16
3-3	3	1.12	41.02	71.14
3-mean	3	1.14	47.04	70.96