Roughness-Shear Strength Relationship

by Ralf Peek,

Serial Information: Journal of the Geotechnical Engineering Division, 1981, Vol. 107, Issue 5, Pg. 672-677

Document Type: Journal Paper


The method presented in the following samples the roughness of an area, rather than a line, on the joint surface by measuring the area of shadow cast by the asperities when the joint is illuminated by oblique unidirectional light. The data thus required may be used directly in a theoretical model to estimate shear strength.

Subject Headings: Joints | Shear strength | Hydraulic roughness | Structural models | Terrain models | Structural strength

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