The University of Southampton
University of Southampton Institutional Repository

Effects of random fibre reinforcement on the density of granular materials

Effects of random fibre reinforcement on the density of granular materials
Effects of random fibre reinforcement on the density of granular materials
The growing need for the development of resilient track materials (including ballast) to cope with increasing train speed, load and frequency has led to a focus on optimizing performance and minimizing maintenance requirements. The use of fibres of random orientation has been shown to improve significantly the mechanical properties of sand. It is reasonable to expect that such random reinforcement will have similar effects on ballast, provided that a thorough understanding of the reinforcement mechanisms at both the micro and macro-scale is reached. This paper presents data based on macro-observations of fibre reinforced scaled ballast that suggest that fibres influence the micro-mechanical interactions governing the volume change of the mixture rather than influencing shear strength mobilization which is enhanced by the tensile capacity of the fibres in the mixture. In addition, the potential benefits of the proposed reinforcement technique in railway ballast are illustrated and discussed
9781138027077
1363-1367
Ajayi, O.
891d2375-234e-476f-a10c-45e0ef2c0f5f
Le Pen, L.
4a38e256-d113-4bba-b0d4-32d41995928a
Zervos, A.
9e60164e-af2c-4776-af7d-dfc9a454c46e
Powrie, W.
600c3f02-00f8-4486-ae4b-b4fc8ec77c3c
Ajayi, O.
891d2375-234e-476f-a10c-45e0ef2c0f5f
Le Pen, L.
4a38e256-d113-4bba-b0d4-32d41995928a
Zervos, A.
9e60164e-af2c-4776-af7d-dfc9a454c46e
Powrie, W.
600c3f02-00f8-4486-ae4b-b4fc8ec77c3c

Ajayi, O., Le Pen, L., Zervos, A. and Powrie, W. (2014) Effects of random fibre reinforcement on the density of granular materials. International Symposium on Geomechanics from Micro and Macro, Cambridge, United Kingdom. 01 - 03 Sep 2014. pp. 1363-1367 .

Record type: Conference or Workshop Item (Paper)

Abstract

The growing need for the development of resilient track materials (including ballast) to cope with increasing train speed, load and frequency has led to a focus on optimizing performance and minimizing maintenance requirements. The use of fibres of random orientation has been shown to improve significantly the mechanical properties of sand. It is reasonable to expect that such random reinforcement will have similar effects on ballast, provided that a thorough understanding of the reinforcement mechanisms at both the micro and macro-scale is reached. This paper presents data based on macro-observations of fibre reinforced scaled ballast that suggest that fibres influence the micro-mechanical interactions governing the volume change of the mixture rather than influencing shear strength mobilization which is enhanced by the tensile capacity of the fibres in the mixture. In addition, the potential benefits of the proposed reinforcement technique in railway ballast are illustrated and discussed

Text
AJAYI_Camb.pdf - Author's Original
Restricted to Registered users only
Download (558kB)
Request a copy

More information

Published date: 1 September 2014
Venue - Dates: International Symposium on Geomechanics from Micro and Macro, Cambridge, United Kingdom, 2014-09-01 - 2014-09-03
Organisations: Infrastructure Group

Identifiers

Local EPrints ID: 370249
URI: http://eprints.soton.ac.uk/id/eprint/370249
ISBN: 9781138027077
PURE UUID: a3cb2ad1-395c-4df1-ac6e-bfe93ff97dfa
ORCID for L. Le Pen: ORCID iD orcid.org/0000-0002-4362-3895
ORCID for A. Zervos: ORCID iD orcid.org/0000-0002-2662-9320
ORCID for W. Powrie: ORCID iD orcid.org/0000-0002-2271-0826

Catalogue record

Date deposited: 27 Oct 2014 11:45
Last modified: 15 Mar 2024 03:24

Export record

Contributors

Author: O. Ajayi
Author: L. Le Pen ORCID iD
Author: A. Zervos ORCID iD
Author: W. Powrie ORCID iD

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×