Cohesion degradation and friction mobilization in brittle failure of rocks

The progressive process of brittle failure was studied using the results of laboratory damage-controlled tests on the samples of Lac du Bonnet granite and Indiana limestone under uniaxial and triaxial loading conditions. A similar trend of decreasing crack damage stress, peak stress and cohesion and increasing friction angle with increasing damage was observed for both rocks which confirmed the previous findings from the results of uniaxial...