Brittleness Evaluation of Shale Based on the Brazilian Splitting Test

Table 6

Crack distribution characteristics of samples in numerical Brazilian splitting tests.

Sample number	Brittleness index	Number of cracks
A-1	0.32	102
B-1	0.71	163
B-7	0.68	161
B-8	0.62	142
B-10	0.43	114
B-12	0.58	137
C-2	0.75	175
C-4	0.87	206
D-1	0.56	126