Fracture Behavior of Rock with Initial Damage: Theoretical, Experimental, and Numerical Investigations

Table 1

Different kinds of specimens for rock fracture test.

Materials		Flaw type	Flaw number
Natural rocks	Granite	Open	1 [3, 8, 41], 2 [8, 12, 42], 3 [43]
	Sandstone	Closed	2 [44]
		Open	1 [3], 2 [45], 3 [46]
	Marble	Open	1 [13, 47, 48], 2 [49]
Rock-like materials	Cement mortar	Closed	Multiple [50, 51]
		Open	1 [52, 53], 2 [11, 54, 55], 3 [11], multiple [56, 57]
	PMMA	Closed	1 [8], 2 [8]
		Open	1 [8], 2 [8, 58, 59]
	Gypsum	Closed	1 [10, 13, 47], 2 [48, 60], 3 [60], multiple [60]
		Open	1 [10, 18, 47, 61], 2 [47, 60, 61], 3 [58, 60–62], multiple [60, 62]