Experimental study on the influence of height and dip angle of asperity on the mechanical properties of rock joints

Joint roughness significantly affects the damage areas and peak shear strength of the rock joint. In this study, theoretical analysis and numerical simulations were carried out, and the results indicated that the resistance angles and heights of asperities quantified the damage range and damage degree, respectively, during the shearing process. Direct shear tests and 3D scanning tests were conducted on sets of mortar joint replicas and sandstone...