Mechanical Properties of Soft Rocks Subjected to Water-Rock Reaction and Cyclic Pressure

Table 2

Disintegration resistance index and expansion rate of soft rocks.

Soft rock	Muddy siltstone	Silty mudstone
Disintegration resistance index (%)	86.01	78.52
Free swelling rate (%)	7	19
Expansion force (kPa)	0	0.22
Water saturated absorptivity of rock (%)	4.92	5.72