Abstract
The evolution of the shear strength of rock joints due to weathering processes is evaluated in terms of the joint wall compressive strength (JCS) and residual friction angle. Laboratory direct shear tests were performed on 32 porphyritic granite joints sampled from granitic rock slopes along a highway in the area of Jechon in South Korea. These samples were classified according to their initial weathering state and morphological conditions of the joint surface before direct shear tests. This study shows that JCS can be reduced by 20–25% of the initial JCS value for a fresh joint wall by weathering processes and that the residual friction angle depends mainly on the weathering state of the joint surface.
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References
Bandis, S., Lumsden, A.C., and Barton, N., 1981, Experimental studies of scale effects on the shear behaviour of rock joints. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstract, 18, 1–21.
Barton, N., 1973, Review of a new shear strength criterion for rock joints. Engineering Geology, 7, 287–332.
Barton, N. and Choubey, V., 1977, The shear strength of rock joints in theory and practice. Rock Mechanics, 10, 1–54.
Bell, F.G. and Le Roux, K., 1998, The chemical and engineering properties of weathered granite in the Valley of a Thousand Hills, Natal, South Africa. In: Proceedings of the 8th International IAEG, Vancouver, September 21–25, 267–274.
Dearman, W.R., 1976, Weathering classification in the characterization of rock. Bulletin of the International Association of Engineering Geology, 13, 123–127.
Geological Society of Korea, 1998, Geology of Korea. Sigma press, Seoul, 802 p. (in Korean).
G.S.E.G., 1995, Geological Society Engineering Group Working Party Report: The description and classification of weathered rocks for engineering purposes. Quarterly Journal of Engineering Geology, 28, 207–242.
Hamrol, A., 1961, A quantitative classification of the weathering and weatherability of rocks. In: Proceedings of the 5th International Conference of Soil Mechanics And Foundation Engineering, Paris, 2, 771–774.
Irfan, T.Y. and Dearman, W. R., 1978, Engineering classification and index properties of a weathered granite. Bulletin of the International Association of Engineering Geology, 17, 79–90.
Kulatilake, P.H.S.W., 1995, New peak shear strength criteria for anisotropic rock joints. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstract, 32, 673–697.
Lee, S.G. and De Freitas, M.H., 1989, A revision of the description and classification of weathered granite and its application to granites in Korea. Quarterly Journal of Engineering Geology, 22, 31–48.
Lee, Y.H., Carr, R., Barr, D.J., and Hass, C.J., 1990, The fractal dimension as a measure of the roughness of rock discontinuity profiles. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstract, 27, 453–464.
Martin, G.R. and Millar, P.J., 1974, Joint strength charcteristcs of a weathered rock. In: Proceedings of the 3rd ISRM Conference, Denver, 263–270.
Myres, N.O., 1962, Characterization of surface roughness. Wear, 5, 182–189.
Reeves, M.J., 1990, Rock surface roughness and frictional strength. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstract, 22, 429–442
Tse, R. and Cruden, D.M., 1979, Estimating joint roughness coefficients. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstract, 16, 303–307.
Woo, I., 2003, Engineering Geology, Altérabilité de granites et gneiss de Corée du Sud-Conséquences sur la stabilité à la long-terme des talus rocheux. Ph.D. thesis, Ecole des Mines de Paris, Paris, 205 p. (in French).
Yu, X. and Vayssade, B., 1991, Joint Profiles and their Roughness Parameters. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstract, 28, 333–336.
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Woo, I., Fleurisson, JA. & Park, HJ. Influence of weathering on shear strength of joints in a porphyritic granite rock mass in Jechon area, South Korea. Geosci J 14, 289–299 (2010). https://doi.org/10.1007/s12303-010-0026-0
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DOI: https://doi.org/10.1007/s12303-010-0026-0