Influences of roughness and filling degree on the shear strength and damage evolution characteristics of cement-filled joints.

ABSTRACT: The shear resistance of filling joints is an important factor affecting the stability of rock joints. Pressure-shear tests of cement-filled joints were carried out. Combined with the acoustic emission (AE) technique, the effects of normal stress, roughness and filling degree on the shear strength, damage morphology and damage evolution of cement-filled joints were investigated. The results show that with the increase of roughness, the failure mode is more complicated. When the roughness is low, only the bonding surface of the interface between the filler and the joint surface is damaged, and the filling degree has a weak effect on the failure mode. When the roughness is high, with the increase of normal stress and filling degree, the failure of the filled joint is from the joint failure of

SUBMITTER: Shu Z 

PROVIDER: S-EPMC11761587 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature