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Article: Field-scale constructability evaluation of underwater vacuum preloading

TitleField-scale constructability evaluation of underwater vacuum preloading
Authors
KeywordsUnderwater vacuum preloading
Soil improvement
Soft marine deposit
Airtight barrier
Marine environment
Issue Date2009
PublisherTaylor & Francis Ltd. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/17486025.asp
Citation
Geomechanics and Geoengineering, 2009, v. 4 n. 3, p. 245-252 How to Cite?
AbstractThere is an ever-increasing demand for land to cope with the rapid economic development worldwide. As a result, new land is always reclaimed from the sea to meet the demand. The soft marine deposit in the seabed is often too weak to support the reclamation and the infrastructure to be built upon it. However, dredging of marine deposit has to be minimized to prevent ecological damage to the marine environment. In-situ improvement of the marine deposit is thus often required. Vacuum preloading is a proven technique to improve the engineering properties of soft clay onshore. However, the viability of applying the technique underwater is yet to be established. Practicality and constructability are important issues. The results of a field-scale constructability evaluation of underwater vacuum preloading are presented in the paper. Different techniques to install a membrane underwater to provide the required air-proof barrier were evaluated by monitoring the vacuum pressure underneath the membrane, pore pressure in the clay in the seabed, and ground settlement as a function of treatment duration.
Persistent Identifierhttp://hdl.handle.net/10722/71036
ISSN
2015 SCImago Journal Rankings: 0.558

 

DC FieldValueLanguage
dc.contributor.authorYeung, ATen_HK
dc.contributor.authorSo, STCen_HK
dc.contributor.authorKwong, AKLen_HK
dc.contributor.authorTham, LGen_HK
dc.contributor.authorZhao, WBen_HK
dc.date.accessioned2010-09-06T06:28:20Z-
dc.date.available2010-09-06T06:28:20Z-
dc.date.issued2009en_HK
dc.identifier.citationGeomechanics and Geoengineering, 2009, v. 4 n. 3, p. 245-252en_HK
dc.identifier.issn1748-6025en_HK
dc.identifier.urihttp://hdl.handle.net/10722/71036-
dc.description.abstractThere is an ever-increasing demand for land to cope with the rapid economic development worldwide. As a result, new land is always reclaimed from the sea to meet the demand. The soft marine deposit in the seabed is often too weak to support the reclamation and the infrastructure to be built upon it. However, dredging of marine deposit has to be minimized to prevent ecological damage to the marine environment. In-situ improvement of the marine deposit is thus often required. Vacuum preloading is a proven technique to improve the engineering properties of soft clay onshore. However, the viability of applying the technique underwater is yet to be established. Practicality and constructability are important issues. The results of a field-scale constructability evaluation of underwater vacuum preloading are presented in the paper. Different techniques to install a membrane underwater to provide the required air-proof barrier were evaluated by monitoring the vacuum pressure underneath the membrane, pore pressure in the clay in the seabed, and ground settlement as a function of treatment duration.-
dc.languageengen_HK
dc.publisherTaylor & Francis Ltd. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/17486025.aspen_HK
dc.relation.ispartofGeomechanics and Geoengineeringen_HK
dc.subjectUnderwater vacuum preloading-
dc.subjectSoil improvement-
dc.subjectSoft marine deposit-
dc.subjectAirtight barrier-
dc.subjectMarine environment-
dc.titleField-scale constructability evaluation of underwater vacuum preloadingen_HK
dc.typeArticleen_HK
dc.identifier.emailYeung, AT: yeungat@hkucc.hku.hken_HK
dc.identifier.emailKwong, AKL: kwongakl@hkucc.hku.hken_HK
dc.identifier.emailTham, LG: hrectlg@hkucc.hku.hken_HK
dc.identifier.authorityYeung, AT=rp00203en_HK
dc.identifier.authorityKwong, AKL=rp00129en_HK
dc.identifier.doi10.1080/17486020903171382-
dc.identifier.hkuros164589en_HK
dc.identifier.volume4-
dc.identifier.issue3-
dc.identifier.spage245-
dc.identifier.epage252-
dc.publisher.placeUnited Kingdom-

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