ISSN: 1945-7545
CODEN: GTJODJ
Page Count: 7

A Circular Arc Test for Soil-Geosynthetic Interface Strength

Ghiassian, H
Graduate student and research assistant, University of Michigan, Ann Arbor, MI

Hryciw, RD
Associate professor and professor, University of Michigan, Ann Arbor, MI

Gray, DH
Associate professor and professor, University of Michigan, Ann Arbor, MI

Abstract

A circular arc test is described for determining the residual, or constant volume, interface strength parameters between soil and geosynthetics. The model is based on the variation of tension in a circular arc of fabric placed over a soil specimen and dead-loaded on two ends. The test method is simple and boundary conditions are well defined. The apparatus, theoretical formulation, and testing procedures are presented. The interface friction angle between dry Muskegon sand and three different materials: a cotton fabric, a fiber-glass mesh, and a nonwoven Geolon N35 filter, as determined by the circular arc test, are presented. Results of a staged circular arc test are also presented for the cotton fabric, and comparison to direct shear test results is made.

Keywords:
geosynthetics, sand, interface friction, shear strength

Paper ID: GTJ10407J
DOI: 10.1520/GTJ10407J
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