Classification and Fractal Characteristics of Limestone Fragments Obtained in Conventional Compression and Cyclic Loading Tests under Uniaxial and Triaxial Conditions

Table 2

Test schemes and results of representative specimens subjected to cyclic loading under the confining pressure of 10 MPa.

Frequency (Hz)	Stress rank	Valley stress level (%)	Peak stress level (%)	Cycle number	Failure state
0.25	1	30	80	3000	Not failed
	2	30	85	3000	Not failed
	3	30	90	3000	Not failed
	4	30	92.5	425	Failed
0.5	1	30	80	3000	Not failed
	2	30	85	3000	Not failed
	3	30	90	3000	Not failed
	4	30	92.5	3000	Not failed
	5	30	95	247	Failed