Field and Laboratory-based Approach for the Determination of Friction Angle of Geological Discontinuities of Malaysian Granites | Zendy

Rohana Abdul Ghani | Zendy; T. L. Goh | Zendy; A. M Hariri | Zendy; Y. N Baizura | Zendy

Open Access

Field and Laboratory-based Approach for the Determination of Friction Angle of Geological Discontinuities of Malaysian Granites

Author(s) -

Rohana Abdul Ghani,

T. L. Goh,

A. M Hariri,

Y. N Baizura

Publication year - 2011

Publication title -

asean journal on science and technology for development

Language(s) - English

Resource type - Journals

eISSN - 2224-9028

pISSN - 0217-5460

DOI - 10.29037/ajstd.41

Subject(s) - classification of discontinuities , discontinuity (linguistics) , tilt (camera) , surface finish , surface roughness , friction angle , inclination angle , geology , materials science , geotechnical engineering , geometry , composite material , mathematics , mathematical analysis

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°.

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