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

Figure 5

Laboratory test sample size and apparatus: (a) sample size used for the laboratory tests; (b) two natural rock samples for different test; (c) compressive test device (MTS 815 rock mechanics test systems); and (d) direct shear strength test device.

(a)

(b)

(c)

(d)