@inproceedings{2f9a813f783142f38a765a79819b556a,
title = "Effects of fracture size and normal stress on the shear behavior of a fracture as estimated by mortar replica",
abstract = "The effects of fracture size and normal stress on the shear behavior of a fracture were investigated in the direct shear tests by using mortar fracture replicas of different sizes, which were produced from a tensile fracture created in granite. Monotonic shear loading was applied at normal stresses of 0.3 and 1MPa for shear displacements of 2 and 20 mm. The change in the surface topography was measured by using a profile measurement system with a laser profilometer to determine the evolution of surface damage and aperture during shear. The results showed that the standard deviation (SD) of the initial aperture during shear increases not only with fracture size but also with normal stress since the matedness decreases due to the fact that asperities are more damaged with normal stress. Consequently, the non-linearity in the closure curve during shear increases with normal stress.",
keywords = "Lab testing, Rock joints, Rock mass, Rock properties",
author = "Giwelli, {A. A.} and K. Matsuki and K. Sakaguchi and A. Kizaki and H. Sekino and K. Okatsu",
year = "2012",
language = "English",
isbn = "9780415804448",
series = "Harmonising Rock Engineering and the Environment - Proceedings of the 12th ISRM International Congress on Rock Mechanics",
pages = "613--616",
booktitle = "Harmonising Rock Engineering and the Environment - Proceedings of the 12th ISRM International Congress on Rock Mechanics",
note = "12th International Congress on Rock Mechanics of the International Society for Rock Mechanics, ISRM 2011 ; Conference date: 18-10-2011 Through 21-10-2011",
}