Microstructural origins of crushing strength for ...
For rocks not presenting an inherent anisotropy, the failure strength is independent of the loading orientation θ.However, for highly layered rocks such as slate, schist or shale, the failure strength largely varies with θ in a ‘U’ shape with minimal strength for an orientation around θ ≃ 25 °, and increasing strength as θ → 0 ° or 90 ° (Amadei, 1996, Saroglou and Tsiambaos ...
