Fatigue properties of cracked, saturated and frozen sandstone samples under cyclic loading

Cyclic and Fatigue Behaviour of Rock Materials: Review, Interpretation and Research Perspectives

“…Some clues indicate that the water saturation should not be neglected (Tien et al 1990;Bagde and Petroš 2005a), and it is demonstrated that saturated samples may have a lower strength than dry samples (Baud et al 2000;Li et al 2003). In addition, the influence of water in the stress corrosion or chemical processes indicates this parameter should be taken into account especially when large number of cycles are investigated.…”

Fatigue properties of intact sandstone samples subjected to dynamic uniaxial cyclical loading

“…From the reported literature, it was found that intact [3][4][5][6][7][8][9][10][11][12][13][14][15][16] and failed models of jointed rock [17][18][19][20] were extremely susceptible to cyclic fatigue failure. Some have also studied the dynamic damage properties of nonjointed intact samples [21][22][23][24][25].…”

“…Tien et al [11] studied strain, pore water pressure, and fatigue characteristics of a saturated sandstone under quasi-static, repeated, and cyclic loadings. It was found that, under some testing Li et al [20] conditions, there existed a critical axial strain beyond which the failure of the specimens would occur immediately. Li et al [12] studied critical evidence for fatigue crack propagation in brittle sandstones.…”

“…In their recent publications, Li et al [19,20] studied the mechanical properties and presented a fatiguedamage model for jointed rock masses and dry, frozen, and saturated sandstone samples with intermittent cracks subjected to dynamic cyclical loading. Li et al [19] reported laboratory studies conducted on gypsum samples with man-made intermittent joints under dynamic loading mode with frequencies of 0.2, 2, and 21 Hz.…”

Validation of a New Elastoplastic Constitutive Model Dedicated to the Cyclic Behaviour of Brittle Rock Materials

“…Given the lifespan of the rock structure, the maximum number of cycles or the maximum amplitude that could be sustained must be assessed. Models able to reproduce evolution of rock strength with cyclic loading are very limited (Li et al, 2003;Xiao et al, 2009Xiao et al, , 2010Bastian et al, 2014;Liu et al, 2014). They mostly consist in predicting strength or strain evolution of triaxial or uniaxial laboratory tests for a given material with respect to the number of cycles.…”