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Y. N Baizura
Geology Programme, Faculty of Science and Technolgy, Universiti Kebangsaan Malaysia
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Mathematics

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Field and Laboratory-based Approach for the Determination of Friction Angle of Geological Discontinuities of Malaysian Granites R. A Ghani; T. L Goh; A. M Hariri; Y. N Baizura
ASEAN Journal on Science and Technology for Development Vol. 28 No. 2 (2011): ASEAN Journal on Science and Technology for Development (AJSTD)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1147.992 KB) | DOI: 10.29037/ajstd.41

Abstract

The basic friction angle, ?b for artificially sawn discontinuity planes for fresh granite, as determined by tilt testing, has an average value of 30º. For the natural rough discontinuity surfaces, a wide range of values have been determined for the peak friction angle, ?peak ranging from 47º to a maximum value of 80º, depending on the joint roughness coefficient (JRC). The average values of the friction angles for the different degrees of roughness were as follows: JRC 2–4 = 58°; JRC 6–8 = 60°; JRC 8–10 = 47°; JRC 12–14 = 60°; JRC 14–16 = 71° ; JRC 18–20 = 80°.
Co-Authors A. M Hariri R. A Ghani T. L Goh