ISSN: 1945-7545
Page Count: 8

A Ring Torsion Apparatus for Evaluating Friction Between Soil and Metal Surfaces

Yoshimi, Y
Professor, Tokyo Institute of Technology, Yokohama,

Kishida, T
Senior Engineer, Toa Harbor Works, Ltd., Yokohama,

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:
soil tests, friction, sands, laboratory tests, surface roughness, radiography

Paper ID: GTJ10783J
DOI: 10.1520/GTJ10783J
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