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Soil-geosynthetic interaction - influence of soil particles size and geosynthetic structure

Soil-geosynthetic interaction - influence of soil particles size and geosynthetic structure
Soil-geosynthetic interaction - influence of soil particles size and geosynthetic structure
This paper reports the results of pullout tests on five different geosynthetics embedded in two different granular soils. Soil and geosynthetic properties are described and soil-geosynthetic interaction behaviour is studied. Based on the results of pullout tests, the influence of soil particle size, geosynthetic structure, and the role of geogrid bearing members are discussed. The main conclusion is that the influence of soil particle size on soil-geosynthetic interaction is important, but its significance depends on several factors. With geogrids, the relative sizes of soil particles and geogrid apertures, and the thickness of the geogrid bearing members, determine soil-geogrid interface shear resistance. A marked increase in soil-geogrid interface shear resistance was observed when the soil contained a significant percentage of particles with sizes slightly greater than the thickness of the geogrid bearing members, but smaller than the geogrid apertures. Tests, on geogrids in which the bearing members had been cut, show a significant decrease in soil-geogrid interface shear resistance. The influence of soil particle size is less important for geotextiles and geocomposites. Although the structure of geotextiles and geocomposites has an effect on soil-reinforcement interface behaviour, mobilised pullout resistance is also affected by the axial tensile stiffness of geotextiles and geocomposites
1072-6349
261-282
Lopes, M.J.
b7e5f7d6-90d8-48cc-b991-0495445fcea4
Lopes, M.L.
dca0c06e-aaa8-47df-923f-5fa9973552ba
Lopes, M.J.
b7e5f7d6-90d8-48cc-b991-0495445fcea4
Lopes, M.L.
dca0c06e-aaa8-47df-923f-5fa9973552ba

Lopes, M.J. and Lopes, M.L. (1999) Soil-geosynthetic interaction - influence of soil particles size and geosynthetic structure. Geosynthetics International, 6 (4), 261-282. (doi:10.1680/gein.6.0153).

Record type: Article

Abstract

This paper reports the results of pullout tests on five different geosynthetics embedded in two different granular soils. Soil and geosynthetic properties are described and soil-geosynthetic interaction behaviour is studied. Based on the results of pullout tests, the influence of soil particle size, geosynthetic structure, and the role of geogrid bearing members are discussed. The main conclusion is that the influence of soil particle size on soil-geosynthetic interaction is important, but its significance depends on several factors. With geogrids, the relative sizes of soil particles and geogrid apertures, and the thickness of the geogrid bearing members, determine soil-geogrid interface shear resistance. A marked increase in soil-geogrid interface shear resistance was observed when the soil contained a significant percentage of particles with sizes slightly greater than the thickness of the geogrid bearing members, but smaller than the geogrid apertures. Tests, on geogrids in which the bearing members had been cut, show a significant decrease in soil-geogrid interface shear resistance. The influence of soil particle size is less important for geotextiles and geocomposites. Although the structure of geotextiles and geocomposites has an effect on soil-reinforcement interface behaviour, mobilised pullout resistance is also affected by the axial tensile stiffness of geotextiles and geocomposites

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More information

Published date: January 1999
Organisations: Infrastructure Group

Identifiers

Local EPrints ID: 374933
URI: http://eprints.soton.ac.uk/id/eprint/374933
ISSN: 1072-6349
PURE UUID: bb1898e8-0363-4601-98ed-10c13a4b760b
ORCID for M.J. Lopes: ORCID iD orcid.org/0000-0003-0808-6307

Catalogue record

Date deposited: 09 Mar 2015 09:06
Last modified: 17 Dec 2019 01:37

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