A laboratory study of railway ballast behaviour under various fouling degree

Rujikiatkamjorn, C; Indraratna, B; Ngo, NT; Coop, M

A laboratory study of railway ballast behaviour under various fouling degree

Rujikiatkamjorn, C

Indraratna, B

Ngo, NT Coop, M

Permalink

Publication Type:: Conference Proceeding
Citation:: GA 2012 - 5th Asian Regional Conference on Geosynthetics: Geosynthetics for Sustainable Adaptation to Climate Change, 2012, pp. 507-514
Issue Date:: 2012-01-01

Closed Access

	Filename	Description	Size
	GA2012 Paper_from TRUNG.pdf	Accepted version	745.24 kB	Adobe PDF	View/Open

Copyright Clearance Process

Recently Added
In Progress
Closed Access

This item is closed access and not available.

Full metadata record

Field	Value	Language
dc.contributor.author	Rujikiatkamjorn, C https://orcid.org/0000-0001-8625-2839
dc.contributor.author	Indraratna, B https://orcid.org/0000-0002-9057-1514
dc.contributor.author	Ngo, NT
dc.contributor.author	Coop, M
dc.date.accessioned	2022-07-28T00:12:04Z
dc.date.available	2022-07-28T00:12:04Z
dc.date.issued	2012-01-01
dc.identifier.citation	GA 2012 - 5th Asian Regional Conference on Geosynthetics: Geosynthetics for Sustainable Adaptation to Climate Change, 2012, pp. 507-514
dc.identifier.uri	http://hdl.handle.net/10453/159233
dc.description.abstract	This paper presents a laboratory study of interface behavior between ballast and geogrid under various degree of fouling by coal fines. The stress-displacement behaviour of fresh and fouled ballast with geogrid was investigated through a series of large-scale direct shear tests where the fouling degree varied from 0% to 95% Void Contamination Index (VCI), at normal stresses ranging from 15kPa to 75kPa. The results showed that geogrid enhances the shear strength and increases apparent angle of shearing resistance, while only slightly reduces the vertical displacement of the composite geogrid-ballast system. However, when ballast was contaminated by coal fines, the influences of geogrid reinforcement decreased in proportion to the increasing level of fouling. A conceptual normalized shear strength model was introduced to calculate this decrease in peak shear stress and peak angle of shearing resistance caused by coal fouling.
dc.language	en
dc.relation.ispartof	GA 2012 - 5th Asian Regional Conference on Geosynthetics: Geosynthetics for Sustainable Adaptation to Climate Change
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	A laboratory study of railway ballast behaviour under various fouling degree
dc.type	Conference Proceeding
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2022-07-28T00:12:03Z
pubs.publication-status	Published

Abstract:

This paper presents a laboratory study of interface behavior between ballast and geogrid under various degree of fouling by coal fines. The stress-displacement behaviour of fresh and fouled ballast with geogrid was investigated through a series of large-scale direct shear tests where the fouling degree varied from 0% to 95% Void Contamination Index (VCI), at normal stresses ranging from 15kPa to 75kPa. The results showed that geogrid enhances the shear strength and increases apparent angle of shearing resistance, while only slightly reduces the vertical displacement of the composite geogrid-ballast system. However, when ballast was contaminated by coal fines, the influences of geogrid reinforcement decreased in proportion to the increasing level of fouling. A conceptual normalized shear strength model was introduced to calculate this decrease in peak shear stress and peak angle of shearing resistance caused by coal fouling.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/159233