An Experimental Investigation of the Progressive Failure of Sandstone and Its Energy Evolution Characteristics

<div>(a) Relationship between the crack closures and damage stresses and the <i>H</i>/<i>D</i>; (b) relationship between the stress levels and the <i>H</i>/<i>D</i>.</div>

Advances in Civil Engineering

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Figure 5

Figure 5: An Experimental Investigation of the Progressive Failure of Sandstone and Its Energy Evolution Characteristics 