Mechanical Behavior of Cracked Rock in Cold Region Subjected to Step Cyclic Loading

Figure 6

Elastic moduli of specimens evolution process under different stress paths. (a) evolution with number of cycles under stress paths 2 and 4; (b) influences of stress level on under stress path 2; (c) influences of stress level on under stress path 4; (d) evolution with number of cycles under stress paths 3 and 5; (e) influences of stress level on under stress path 3; (f) influences of stress level on under stress path 5.

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(b)

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(f)