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Shear behaviour of geosynthetics in the inclined plane test – influence of soil particle size and geosynthetic structure

Shear behaviour of geosynthetics in the inclined plane test – influence of soil particle size and geosynthetic structure
Shear behaviour of geosynthetics in the inclined plane test – influence of soil particle size and geosynthetic structure
This paper reports the investigation of the shear behaviour of six geosynthetics with two granular soils. The test equipment, soils, and geosynthetics properties are described and the soil-geosynthetic interaction behaviour is studied. The influence of soil particle size, geosynthetic structure, and test method are discussed by analysing the results of inclined plane tests. The main conclusions of the study are as follows: geosynthetic structure has an important influence on the soil-geosynthetic interface friction angle; higher soil-geosynthetic interface friction angles are measured when the geosynthetic surface has significantly sized apertures (e.g., geogrids) or allows the penetration of soil particles into the geosynthetic (e.g., nonwoven, spun-bonded geotextiles); geosynthetic surface roughness (e.g., geomembranes) is associated with higher soil-geosynthetic interface friction angles; soil particle size has an important influence on the soil-geosynthetic interface friction angle; broadly graded soils with large average soil particle sizes allow an increase in the soil-geosynthetic interface resistance; the method of test does not significantly influence the soil-geomembrane or soil-geotextile interface friction angles (geosynthetics with continuous surfaces); and the validity of evaluating the soil-geogrid interface resistance using a rigid support (Test method 1) depends on the structure of the geogrid. It is suggested that site conditions is the greatest factor to consider when selecting the most appropriate test method
1072-6349
327-342
Lopes, P.C.
028aefea-8a26-44cd-9eff-5b17c46da84f
Lopes, M.L.
dca0c06e-aaa8-47df-923f-5fa9973552ba
Lopes, M.P.
b7e5f7d6-90d8-48cc-b991-0495445fcea4
Lopes, P.C.
028aefea-8a26-44cd-9eff-5b17c46da84f
Lopes, M.L.
dca0c06e-aaa8-47df-923f-5fa9973552ba
Lopes, M.P.
b7e5f7d6-90d8-48cc-b991-0495445fcea4

Lopes, P.C., Lopes, M.L. and Lopes, M.P. (2001) Shear behaviour of geosynthetics in the inclined plane test – influence of soil particle size and geosynthetic structure. Geosynthetics International, 8 (4), 327-342. (doi:10.1680/gein.8.0198).

Record type: Article

Abstract

This paper reports the investigation of the shear behaviour of six geosynthetics with two granular soils. The test equipment, soils, and geosynthetics properties are described and the soil-geosynthetic interaction behaviour is studied. The influence of soil particle size, geosynthetic structure, and test method are discussed by analysing the results of inclined plane tests. The main conclusions of the study are as follows: geosynthetic structure has an important influence on the soil-geosynthetic interface friction angle; higher soil-geosynthetic interface friction angles are measured when the geosynthetic surface has significantly sized apertures (e.g., geogrids) or allows the penetration of soil particles into the geosynthetic (e.g., nonwoven, spun-bonded geotextiles); geosynthetic surface roughness (e.g., geomembranes) is associated with higher soil-geosynthetic interface friction angles; soil particle size has an important influence on the soil-geosynthetic interface friction angle; broadly graded soils with large average soil particle sizes allow an increase in the soil-geosynthetic interface resistance; the method of test does not significantly influence the soil-geomembrane or soil-geotextile interface friction angles (geosynthetics with continuous surfaces); and the validity of evaluating the soil-geogrid interface resistance using a rigid support (Test method 1) depends on the structure of the geogrid. It is suggested that site conditions is the greatest factor to consider when selecting the most appropriate test method

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More information

Published date: January 2001
Organisations: Infrastructure Group

Identifiers

Local EPrints ID: 374936
URI: http://eprints.soton.ac.uk/id/eprint/374936
ISSN: 1072-6349
PURE UUID: 2c61878a-533c-484f-99b1-a529b36753d7
ORCID for M.P. Lopes: ORCID iD orcid.org/0000-0003-0808-6307

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Date deposited: 09 Mar 2015 09:11
Last modified: 09 Jan 2022 03:43

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Contributors

Author: P.C. Lopes
Author: M.L. Lopes
Author: M.P. Lopes ORCID iD

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