Hybrid Failure of Cemented Paste Backfill

The hybrid failure is a coupled mechanism under the action of tensile and shear stresses. critical in cemented paste backfill (CPB) since there are no visible signs prior to failure. Few studies have been conducted on stress response CPB. This most likely due lack suitable laboratory equipment test procedures. paper presents new punching apparatus evaluate We harness two-dimensional finite element analysis (FEA) for supplementing experimental study providing transformation, deformation, possible mechanisms. Our suggests that combination strength function angle frustum. strengths measured by comparable those direct tests, which properties CPB curing time binder content dependent. FEA results substantiate effectiveness proposed model predicting