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A behavioural framework for fibre reinforced gravel

A behavioural framework for fibre reinforced gravel
A behavioural framework for fibre reinforced gravel
The mechanical behaviour of granular materials is known to be influenced by the addition of fibres.
However, most previous research has been carried out on materials with relatively small grains (sands),
and its application to larger grains is not well documented. This paper reports an investigation into the
mechanical behaviour of a fibre-reinforced granular material with a relatively large grain size
corresponding to one-third and one-fifth scale railway ballast. The investigation was carried out by
means of triaxial tests incorporating a full-field, image-based deformation measurement technique; this
enabled detailed observations to be made of each triaxial test specimen during shearing. The test data
demonstrate the benefits of random fibre reinforcement for aggregates that have a relatively large grain
size. Analysis taking into account the effect of fibre tension on the effective stresses experienced by the
granular skeleton provides new insights into the mechanisms of reinforcement in larger sized granular
materials.
Deformation, Fabric/structure of soils, Gravels, Ground improvements, Laboratory tests, Shear strength
0016-8505
56-68
Ajayi, Olufemi
acdec1f1-e3ef-4ae4-bb6b-5f27ebd4f980
Le Pen, Louis
4a38e256-d113-4bba-b0d4-32d41995928a
Zervos, Antonios
9e60164e-af2c-4776-af7d-dfc9a454c46e
Powrie, William
600c3f02-00f8-4486-ae4b-b4fc8ec77c3c
Ajayi, Olufemi
acdec1f1-e3ef-4ae4-bb6b-5f27ebd4f980
Le Pen, Louis
4a38e256-d113-4bba-b0d4-32d41995928a
Zervos, Antonios
9e60164e-af2c-4776-af7d-dfc9a454c46e
Powrie, William
600c3f02-00f8-4486-ae4b-b4fc8ec77c3c

Ajayi, Olufemi, Le Pen, Louis, Zervos, Antonios and Powrie, William (2016) A behavioural framework for fibre reinforced gravel. Geotechnique, 67 (1), 56-68. (doi:10.1680/jgeot.16.P.023). (In Press)

Record type: Article

Abstract

The mechanical behaviour of granular materials is known to be influenced by the addition of fibres.
However, most previous research has been carried out on materials with relatively small grains (sands),
and its application to larger grains is not well documented. This paper reports an investigation into the
mechanical behaviour of a fibre-reinforced granular material with a relatively large grain size
corresponding to one-third and one-fifth scale railway ballast. The investigation was carried out by
means of triaxial tests incorporating a full-field, image-based deformation measurement technique; this
enabled detailed observations to be made of each triaxial test specimen during shearing. The test data
demonstrate the benefits of random fibre reinforcement for aggregates that have a relatively large grain
size. Analysis taking into account the effect of fibre tension on the effective stresses experienced by the
granular skeleton provides new insights into the mechanisms of reinforcement in larger sized granular
materials.

Text FRSB_May2016_final2.pdf - Accepted Manuscript
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Accepted/In Press date: 27 May 2016
Keywords: Deformation, Fabric/structure of soils, Gravels, Ground improvements, Laboratory tests, Shear strength
Organisations: Infrastructure Group

Identifiers

Local EPrints ID: 396440
URI: https://eprints.soton.ac.uk/id/eprint/396440
ISSN: 0016-8505
PURE UUID: c261f880-7386-41ea-b6fe-3dd657350b8f
ORCID for Louis Le Pen: ORCID iD orcid.org/0000-0002-4362-3895
ORCID for Antonios Zervos: ORCID iD orcid.org/0000-0002-2662-9320
ORCID for William Powrie: ORCID iD orcid.org/0000-0002-2271-0826

Catalogue record

Date deposited: 09 Jun 2016 12:55
Last modified: 06 Jun 2018 13:06

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Contributors

Author: Olufemi Ajayi
Author: Louis Le Pen ORCID iD
Author: Antonios Zervos ORCID iD
Author: William Powrie ORCID iD

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