A Ring Torsion Apparatus for Evaluating Friction Between Soil and Metal Surfaces
- 1 December 1981
- journal article
- other
- Published by ASTM International in Geotechnical Testing Journal
- Vol. 4 (4) , 145-152
- https://doi.org/10.1520/gtj10783j
Abstract
A ring torsion apparatus was used to evaluate friction between-dry sand and a steel surface over wide ranges of surface roughness and sand density. The deformation of sand near the steel surface was observed by X-radiography. The apparatus is suitable for evaluating skin friction under well-defined test conditions. The test results show that frictional resistance is primarily governed by the roughness of the steel surface, irrespective of the density of the sand.Keywords
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