Performance of marine clay stabilised with vacuum pressure: Based on Queensland experience

Indraratna, B; Rujikiatkamjorn, C; Baral, P; Ameratunga, J

Performance of marine clay stabilised with vacuum pressure: Based on Queensland experience

Indraratna, B

Rujikiatkamjorn, C Baral, P Ameratunga, J

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Publisher:: SCIENCE PRESS
Publication Type:: Journal Article
Citation:: Journal of Rock Mechanics and Geotechnical Engineering, 2019, 11, (3), pp. 598-611
Issue Date:: 2019-06-01

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Field	Value	Language
dc.contributor.author	Indraratna, B https://orcid.org/0000-0002-9057-1514
dc.contributor.author	Rujikiatkamjorn, C
dc.contributor.author	Baral, P
dc.contributor.author	Ameratunga, J
dc.date.accessioned	2020-05-08T03:45:07Z
dc.date.available	2020-05-08T03:45:07Z
dc.date.issued	2019-06-01
dc.identifier.citation	Journal of Rock Mechanics and Geotechnical Engineering, 2019, 11, (3), pp. 598-611
dc.identifier.issn	1674-7755
dc.identifier.issn	1674-7755
dc.identifier.uri	http://hdl.handle.net/10453/140575
dc.description.abstract	© 2018 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences Stabilising soft marine clay and estuarine soils via vacuum preloading has become very popular in Australasia over the past decades because it is a cost-effective and time-efficient approach. In recent times, new land on areas outside but adjacent to existing port amenities, the Fisherman Islands at the Port of Brisbane (POB), was reclaimed to cater for an increase in trade activities. A vacuum preloading method combined with surcharge to stabilise the deep layers of soil was used to enhance the application of prefabricated vertical drains (PVDs). This paper describes the performance of this combined surcharge fill and vacuum system under the embankment and also compares it with a surcharge loading system to demonstrate the benefits of vacuum pressure over conventional fill. The performance of this embankment is also presented in terms of field monitoring data, and the relative performance of the vacuum together with non-vacuum systems is evaluated. An analytical solution to radial consolidation with time-dependent surcharge loading and vacuum pressure is also presented in order to predict the settlement and associated excess pore water pressure (EPWP) of deposits of thick soft clay.
dc.language	English
dc.publisher	SCIENCE PRESS
dc.relation.ispartof	Journal of Rock Mechanics and Geotechnical Engineering
dc.relation.isbasedon	10.1016/j.jrmge.2018.11.002
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.subject	0905 Civil Engineering
dc.title	Performance of marine clay stabilised with vacuum pressure: Based on Queensland experience
dc.type	Journal Article
utslib.citation.volume	11
utslib.for	0905 Civil Engineering
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	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2020-05-08T03:45:05Z
pubs.issue	3
pubs.publication-status	Published
pubs.volume	11
utslib.start-page	598
utslib.citation.issue	3

Abstract:

© 2018 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences Stabilising soft marine clay and estuarine soils via vacuum preloading has become very popular in Australasia over the past decades because it is a cost-effective and time-efficient approach. In recent times, new land on areas outside but adjacent to existing port amenities, the Fisherman Islands at the Port of Brisbane (POB), was reclaimed to cater for an increase in trade activities. A vacuum preloading method combined with surcharge to stabilise the deep layers of soil was used to enhance the application of prefabricated vertical drains (PVDs). This paper describes the performance of this combined surcharge fill and vacuum system under the embankment and also compares it with a surcharge loading system to demonstrate the benefits of vacuum pressure over conventional fill. The performance of this embankment is also presented in terms of field monitoring data, and the relative performance of the vacuum together with non-vacuum systems is evaluated. An analytical solution to radial consolidation with time-dependent surcharge loading and vacuum pressure is also presented in order to predict the settlement and associated excess pore water pressure (EPWP) of deposits of thick soft clay.

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http://hdl.handle.net/10453/140575