Radial consolidation characteristics of soft undisturbed clay based on large specimens

Baral, P; Rujikiatkamjorn, C; Indraratna, B; Kelly, R

Radial consolidation characteristics of soft undisturbed clay based on large specimens

Baral, P Rujikiatkamjorn, C

Indraratna, B

Kelly, R

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Publisher:: SCIENCE PRESS
Publication Type:: Journal Article
Citation:: Journal of Rock Mechanics and Geotechnical Engineering, 2018, 10, (6), pp. 1037-1045
Issue Date:: 2018-12-01

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Field	Value	Language
dc.contributor.author	Baral, P
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	Kelly, R
dc.date.accessioned	2022-08-25T08:44:42Z
dc.date.available	2022-08-25T08:44:42Z
dc.date.issued	2018-12-01
dc.identifier.citation	Journal of Rock Mechanics and Geotechnical Engineering, 2018, 10, (6), pp. 1037-1045
dc.identifier.issn	1674-7755
dc.identifier.issn	2589-0417
dc.identifier.uri	http://hdl.handle.net/10453/160853
dc.description.abstract	In recent years, reconstituted small samples have often been used to assess the performance of radial consolidation due to prefabricated vertical drains (PVDs), but the permeability and compressibility of samples of undisturbed soil often differ from those of the remoulded ones. The problem seems more complex in marine environment due to the presence of random coarse particles including gravels, shells and natural partings. Performing small-scale laboratory experiment with reconstituted samples, especially in marine environment, cannot predict the exact soil behaviour in the field. This paper describes an experimental programme that measures radial consolidation using a conventional Rowe cell and a large-scale consolidometer, where the samples of undisturbed soil obtained from a site along the Pacific Highway (north of Sydney) were compared using measured settlements and excess pore pressures. Moreover, this paper highlights the implications of the smear effect and sample size influence, which are imperative in translating the laboratory testing practices to actual real-life behaviour. The effect of vacuum pressure on the coefficient of radial consolidation of a large-scale undisturbed test specimen is also discussed. The paper demonstrates that the extent of smear zone in the field can be very similar to the large-scale laboratory consolidation test using a scaled-down drain and mandrel, but considerably different from the data obtained for small laboratory specimens.
dc.language	English
dc.publisher	SCIENCE PRESS
dc.relation.ispartof	Journal of Rock Mechanics and Geotechnical Engineering
dc.relation.isbasedon	10.1016/j.jrmge.2018.06.002
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0905 Civil Engineering
dc.title	Radial consolidation characteristics of soft undisturbed clay based on large specimens
dc.type	Journal Article
utslib.citation.volume	10
utslib.for	0905 Civil Engineering
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	open_access	*
dc.date.updated	2022-08-25T08:44:41Z
pubs.issue	6
pubs.publication-status	Published
pubs.volume	10
utslib.citation.issue	6

Abstract:

In recent years, reconstituted small samples have often been used to assess the performance of radial consolidation due to prefabricated vertical drains (PVDs), but the permeability and compressibility of samples of undisturbed soil often differ from those of the remoulded ones. The problem seems more complex in marine environment due to the presence of random coarse particles including gravels, shells and natural partings. Performing small-scale laboratory experiment with reconstituted samples, especially in marine environment, cannot predict the exact soil behaviour in the field. This paper describes an experimental programme that measures radial consolidation using a conventional Rowe cell and a large-scale consolidometer, where the samples of undisturbed soil obtained from a site along the Pacific Highway (north of Sydney) were compared using measured settlements and excess pore pressures. Moreover, this paper highlights the implications of the smear effect and sample size influence, which are imperative in translating the laboratory testing practices to actual real-life behaviour. The effect of vacuum pressure on the coefficient of radial consolidation of a large-scale undisturbed test specimen is also discussed. The paper demonstrates that the extent of smear zone in the field can be very similar to the large-scale laboratory consolidation test using a scaled-down drain and mandrel, but considerably different from the data obtained for small laboratory specimens.

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http://hdl.handle.net/10453/160853