Experimental Study on the Softening Characteristics of Sandstone and Mudstone in Relation to Moisture Content

Table 2

The mechanical properties of rock samples under different moisture content.

Rock type	Moisture content	Shear strength/MPa	Cohesion/MPa	Internal friction angle/°
Sandstone	1.27%	64.95	21.68	31.93
	1.85%	45.01	15.54	29.20
	1.91%	33.97	14.73	29.14
	2.16%	30.14	13.06	29.16
	2.24%	30.10	12.65	28.82
	2.29%	30.04	12.64	28.62
	2.27%	29.96	12.40	28.88
Mudstone	1.97%	15.44	5.95	28.18
	3.41%	9.38	4.98	27.20
	4.59%	8.01	4.60	26.19
	4.84%	7.75	4.36	26.14
	4.97%	8.03	4.27	26.57