Research Article

Crack Initiation Behaviors of Granite Specimens Containing Crossing-Double-Flaws with Different Lengths under Uniaxial Loading

Table 2

First macrocracks, crack initiation stresses, crack initiation angles, and crack initiation locations of granite specimens under different simulation conditions (microcracks presented in black colour).

Conditions = 30°,  = 0° = 30°,  = 30° = 30°,  = 45° = 30°,  = 60° = 30°,  = 90° = 45°,  = 0° = 45°,  = 30° = 45°,  = 45° = 45°,  = 60° = 45°,  = 90°

Initiation of first macrocracks
Crack initiation stress (MPa)30.51130.18330.26232.16233.81235.60434.04133.56633.30936.852
, (°)86, 8586, 9286, 8784, 85147, 11584, 9089, 9288, 9490, 8685, 89
, (mm)2.05, 2.451.96, 2.312.00, 2.221.70, 2.181.20, 0.710.45, 1.230.48, 1.270.46, 1.600.38, 1.550.42, 1.69