An Experimental Study on the Water-Induced Strength Reduction in Zigong Argillaceous Siltstone with Different Degree of Weathering

Table 1

The uniaxial compressive strength of the argillaceous siltstone samples.

Condition	Highly weathered			Moderately weathered
	Sample	UCS (MPa)	Average (MPa)	Sample	UCS (MPa)	Average (MPa)
Natural	t1-N-1	7.19	6.87	t2-N-1	19.21	20.46
	t1-N-2	6.52		t2-N-2	21.53
	t1-N-3	6.91		t2-N-3	20.65
Saturated	t1-S-1	2.63	3.13	t2-S-1	10.89	11.86
	t1-S-2	2.23		t2-S-2	13.43
	t1-S-3	4.53		t2-S-3	11.26