A frost heave model of unsaturated coarse-grained soil considering vapour transfer

Liu, J; Teng, J; Zhang, S; Sheng, D

A frost heave model of unsaturated coarse-grained soil considering vapour transfer

Liu, J Teng, J Zhang, S Sheng, D

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Publisher:: EDP Sciences
Publication Type:: Conference Proceeding
Citation:: E3S Web of Conferences, 2020, 195, pp. 02017-02017
Issue Date:: 2020-10-16

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Field	Value	Language
dc.contributor.author	Liu, J
dc.contributor.author	Teng, J
dc.contributor.author	Zhang, S
dc.contributor.author	Sheng, D https://orcid.org/0000-0002-1665-6931
dc.date.accessioned	2021-02-22T05:01:47Z
dc.date.available	2021-02-22T05:01:47Z
dc.date.issued	2020-10-16
dc.identifier.citation	E3S Web of Conferences, 2020, 195, pp. 02017-02017
dc.identifier.issn	2555-0403
dc.identifier.issn	2267-1242
dc.identifier.uri	http://hdl.handle.net/10453/146281
dc.description.abstract	© The Authors, published by EDP Sciences 2020. Substantial frost heave has been observed in coarse fills in high-speed railway embankments. These coarse fills have low fine contents and very low water content. The groundwater table is located below the coarse fills. The coarse fills were considered not susceptible to frost heave. Recent experimental results in the literature showed that vapour transfer has a considerable influence on the frost heaving of unsaturated coarse-grained soil. But vapour transfer has been rarely considered in the modelling of frost heave. This study presents a new frost heave model with considering vapour transfer and its contribution to ice formation. The rigid ice theory is applied to initiate an ice lens formation in the frozen fringe. An updated computer programme PCHeave is developed by considering the vapour transfer. The results of the proposed model are compared with laboratory test results, which show reasonable agreement. The prediction of the model agrees well with the measured frost heave and frost depth, which indicates that the proposed model can reasonably reflects the process of frost heave in unsaturated coarse soil.
dc.language	en
dc.publisher	EDP Sciences
dc.relation.ispartof	E3S Web of Conferences
dc.relation.isbasedon	10.1051/e3sconf/202019502017
dc.rights	info:eu-repo/semantics/openAccess
dc.title	A frost heave model of unsaturated coarse-grained soil considering vapour transfer
dc.type	Conference Proceeding
utslib.citation.volume	195
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
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	open_access	*
dc.date.updated	2021-02-22T05:01:33Z
pubs.publication-status	Published
pubs.volume	195

Abstract:

© The Authors, published by EDP Sciences 2020. Substantial frost heave has been observed in coarse fills in high-speed railway embankments. These coarse fills have low fine contents and very low water content. The groundwater table is located below the coarse fills. The coarse fills were considered not susceptible to frost heave. Recent experimental results in the literature showed that vapour transfer has a considerable influence on the frost heaving of unsaturated coarse-grained soil. But vapour transfer has been rarely considered in the modelling of frost heave. This study presents a new frost heave model with considering vapour transfer and its contribution to ice formation. The rigid ice theory is applied to initiate an ice lens formation in the frozen fringe. An updated computer programme PCHeave is developed by considering the vapour transfer. The results of the proposed model are compared with laboratory test results, which show reasonable agreement. The prediction of the model agrees well with the measured frost heave and frost depth, which indicates that the proposed model can reasonably reflects the process of frost heave in unsaturated coarse soil.

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http://hdl.handle.net/10453/146281