Improvement of soil stability along rail corridors through native vegetation

Pallewattha, M; Indraratna, B; Rujikiatkamjorn, C

Improvement of soil stability along rail corridors through native vegetation

Pallewattha, M Indraratna, B

Rujikiatkamjorn, C

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Publisher:: CRC PRESS-TAYLOR & FRANCIS GROUP
Publication Type:: Chapter
Citation:: Unsaturated Soil Mechanics - from Theory to Practice, 2016, pp. 835-838
Issue Date:: 2016-01-01

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Field	Value	Language
dc.contributor.author	Pallewattha, M
dc.contributor.author	Indraratna, B https://orcid.org/0000-0002-2346-8250
dc.contributor.author	Rujikiatkamjorn, C https://orcid.org/0000-0001-8625-2839
dc.contributor.editor	Chen, Z
dc.contributor.editor	Wei, C
dc.contributor.editor	Sun, D
dc.contributor.editor	Xu, Y
dc.date.accessioned	2023-02-06T02:27:05Z
dc.date.available	2023-02-06T02:27:05Z
dc.date.issued	2016-01-01
dc.identifier.citation	Unsaturated Soil Mechanics - from Theory to Practice, 2016, pp. 835-838
dc.identifier.isbn	9781138029217
dc.identifier.uri	http://hdl.handle.net/10453/165928
dc.description.abstract	Field studies have revealed the effective utilization of native trees as an economical and environmental friendly method of soil stabilization along railway lines in Australia. Native trees grown along rail corridors are capable of providing mechanical strength to the subgrade soil through the root network and the additional cohesive increment provided by the osmotic suction generated at the hair roots. Moreover matric suction generation due to evapo-transpiration of the tree canopy has significant influence on shear strength of soil underneath the railway lines. Therefore the true effect of vegetation should be evaluated considering the mechanical root reinforcement effect, evapo-transpiration induced matric suction development and in addition the alteration of potential failure conditions in the soil-root system from a saturated to an unsaturated domain. This paper will discuss the requirement of a shear strength model that combines the root reinforcement effect with both osmotic and matric suction components generated in the soil through naturally coupled osmotic evapo-transpiration phenomenon.
dc.language	en
dc.publisher	CRC PRESS-TAYLOR & FRANCIS GROUP
dc.relation.ispartof	Unsaturated Soil Mechanics - from Theory to Practice
dc.relation.isbasedon	10.1201/b19248-139
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	Improvement of soil stability along rail corridors through native vegetation
dc.type	Chapter
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	2023-02-06T02:27:03Z
pubs.publication-status	Published

Abstract:

Field studies have revealed the effective utilization of native trees as an economical and environmental friendly method of soil stabilization along railway lines in Australia. Native trees grown along rail corridors are capable of providing mechanical strength to the subgrade soil through the root network and the additional cohesive increment provided by the osmotic suction generated at the hair roots. Moreover matric suction generation due to evapo-transpiration of the tree canopy has significant influence on shear strength of soil underneath the railway lines. Therefore the true effect of vegetation should be evaluated considering the mechanical root reinforcement effect, evapo-transpiration induced matric suction development and in addition the alteration of potential failure conditions in the soil-root system from a saturated to an unsaturated domain. This paper will discuss the requirement of a shear strength model that combines the root reinforcement effect with both osmotic and matric suction components generated in the soil through naturally coupled osmotic evapo-transpiration phenomenon.

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http://hdl.handle.net/10453/165928