Geotechnical properties of ballast and the role of geosynthetics in rail track stabilisation

Author:

Indraratna B.1,Khabbaz H.2,Salim W.3,Christie D.3

Affiliation:

1. Faculty of Engineering, University of Wollongong Australia

2. Jeffery and Katauskas Consulting Geotechnical and Environmental Engineers Sydney, Australia

3. Geotechnical Consulting Division, RailCorp (NSW) Sydney, Australia

Abstract

The ballast and its engineering behaviour have a key role in governing the stability and performance of railway tracks. The deformation and degradation behaviour of ballast under static and dynamic loads was studied based on large-scale triaxial testing. The possible use of different types of geosynthetics to improve the performance of fresh and recycled ballast was also investigated. The research findings showed that the inclusion of geosynthetics improves the performance of ballasted tracks. Le ballast et son comportement mécanique ont une influence importante sur la stabilité et la performance des voies ferrées. Nous avons étudié le comportement de détérioration et de déformation du ballast sous charge statiques et dynamiques en nous basant sur des essais triaxiaux à grande échelle. Nous avons également étudié la possibilité d'utiliser divers types de géosynthétiques pour améliorer la performance du ballast neuf et recyclé. Les résultats de cette recherche ont montré que l'adjonction de géosynthétiques améliorait la performance des voies ballastées.

Publisher

Thomas Telford Ltd.

Subject

Mechanics of Materials,Soil Science,Geotechnical Engineering and Engineering Geology,Building and Construction

Reference23 articles.

1. Smear Effects of Vertical Drains on Soft Bangkok Clay

2. The influence of confining pressure on the shear strength of compacted rockfill

3. Chrismer S. M. Considerations of Factors Affecting Ballast Performance, 1985, American Railway Engineering Association (AREA): 118–150, Bulletin 704, AAR Research and Test Department Report No. WP-110.

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