Crack Evolution Characteristics and Cracking Mechanism of Red Beds in Central Sichuan during Seepage and Swelling

Table 3

Final crack degree of samples.

Sample number	Lithology	Method of water absorption	Initial water content (%)	Final crack degree (%)
1#	Mudstone	Capillary absorption	4.01	8.06
2#			2.95	12.81
3#			1.56	17.18
4#		Soaking absorption	4.01	14.50
5#			2.90	28.20
6#	Argillaceous sandstone	Soaking absorption	3.37	7.25
7#			2.56	8.36
8#	Sandstone		3.34	0