Macro- and Microresearch on Swelling Characteristics and Deformation Mechanism of Red-Bed Mudstone in Central Sichuan, China

Table 4

Porosity at different depths of the sample varies with the number of wet and dry cycles.

State	1/5 layer	2/5 layer	3/5 layer	4/5 layer	5/5 layer	Average
Undistributed	0.454	0.021	0.009	0.461	0	0.169
One cycle	4.736	3.596	3.198	2.627	3.318	3.495
Two cycles	5.391	4.412	4.165	4.165	6.851	5.054