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Resin recovery and the use of computed tomography for quantitative image analysis of railway ballast

Le Pen, L., Ahmed, S., Zervos, A., Harkness, J. and Powrie, W., (2014) Resin recovery and the use of computed tomography for quantitative image analysis of railway ballast Pombo, J. (ed.) At The second International Conference on Railway Technology: Research, Development and Maintenance, France. 08 - 11 Apr 2014. 15 pp. (doi:10.4203/ccp.104.130).

Record type: Conference or Workshop Item (Paper)

Abstract

Over its life cycle, railway ballast undergoes changes to its fabric structure due to train loading and maintenance (e.g. tamping). Understanding these changes and linking them quantitatively to the loading regime has the potential to inform improved designs for new track and more cost-effective maintenance of the existing network. However, a method for recovering samples of ballast from in service track with the fabric structure preserved for detailed examination is required. This paper describes the development and application of such a method using a polyurethane resin, and demonstrates the ability of powerful X-ray scanners and CT (computed tomography) techniques to construct 3D images of recovered samples up to 300 mm in diameter. It is believed that obtaining preserved samples from in-service railway track and using CT scanning on such large samples have not been done before. To demonstrate the quality and versatility of the CT images illustrative results for CT analysis to measure the coordination number and particle orientation of the field samples obtained are also presented.

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Published date: April 2014
Venue - Dates: The second International Conference on Railway Technology: Research, Development and Maintenance, France, 2014-04-08 - 2014-04-11
Organisations: Faculty of Engineering and the Environment

Identifiers

Local EPrints ID: 366500
URI: http://eprints.soton.ac.uk/id/eprint/366500
PURE UUID: b40b0597-af72-4b1e-8afc-5b0538dc3306
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 J. Harkness: ORCID iD orcid.org/0000-0001-7598-0080
ORCID for W. Powrie: ORCID iD orcid.org/0000-0002-2271-0826

Catalogue record

Date deposited: 09 Jul 2014 13:04
Last modified: 18 Jul 2017 02:11

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Contributors

Author: L. Le Pen ORCID iD
Author: S. Ahmed
Author: A. Zervos ORCID iD
Author: J. Harkness ORCID iD
Author: W. Powrie ORCID iD
Editor: J. Pombo

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