Effect of Immersion Duration on Shear Behavior of Granite Fractures

An understanding of shear behavior of fractured rocks subjected to different durations of groundwater immersion is essential for practical rock engineering. Direct shear tests were conducted on fractured granite samples after different immersion durations of 1, 3, 6 and 12 months, and the initially dry granite fracture samples were also tested as reference. The results indicate that the peak shear strength, residual shear strength, shear...