Long-term strength of soil-cement columns in coastal areas

Pham, VN; Turner, B; Huang, J; Kelly, R

Long-term strength of soil-cement columns in coastal areas

Pham, VN Turner, B

Huang, J Kelly, R

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Soils and Foundations, 2017, 57, (4), pp. 645-654
Issue Date:: 2017-08-01

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Field	Value	Language
dc.contributor.author	Pham, VN
dc.contributor.author	Turner, B https://orcid.org/0000-0002-8894-9610
dc.contributor.author	Huang, J
dc.contributor.author	Kelly, R
dc.date.accessioned	2022-09-06T03:50:58Z
dc.date.available	2022-09-06T03:50:58Z
dc.date.issued	2017-08-01
dc.identifier.citation	Soils and Foundations, 2017, 57, (4), pp. 645-654
dc.identifier.issn	0038-0806
dc.identifier.issn	1881-1418
dc.identifier.uri	http://hdl.handle.net/10453/161418
dc.description.abstract	The soil-cement column is a ground improvement technique formed by the deep mixing method. In coastal areas, the soil-cement columns can deteriorate due to the attack of sulfate present in sea water. After long periods of exposure, the strength of these columns may decrease significantly, ultimately resulting in failure in the worst case scenario. In this study, needle penetration tests, uniaxial compression tests and a thermogravimetric analysis were applied to determine the extent of the deterioration of soil-cement columns exposed to synthetic sea water. An analysis model was developed and calibrated using the experimental data to predict the change in the total strength of the soil-cement columns as a function of time. The results show that the deterioration rate increases when the diameter of the samples decreases. The model proposed has potential to be used to design more durable soil-cement columns in coastal environments.
dc.language	English
dc.publisher	Elsevier
dc.relation.ispartof	Soils and Foundations
dc.relation.isbasedon	10.1016/j.sandf.2017.04.005
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0503 Soil Sciences, 0905 Civil Engineering, 0999 Other Engineering
dc.subject.classification	Geological & Geomatics Engineering
dc.title	Long-term strength of soil-cement columns in coastal areas
dc.type	Journal Article
utslib.citation.volume	57
utslib.for	0503 Soil Sciences
utslib.for	0905 Civil Engineering
utslib.for	0999 Other 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	*
pubs.consider-herdc	false
dc.date.updated	2022-09-06T03:50:56Z
pubs.issue	4
pubs.publication-status	Published
pubs.volume	57
utslib.citation.issue	4

Abstract:

The soil-cement column is a ground improvement technique formed by the deep mixing method. In coastal areas, the soil-cement columns can deteriorate due to the attack of sulfate present in sea water. After long periods of exposure, the strength of these columns may decrease significantly, ultimately resulting in failure in the worst case scenario. In this study, needle penetration tests, uniaxial compression tests and a thermogravimetric analysis were applied to determine the extent of the deterioration of soil-cement columns exposed to synthetic sea water. An analysis model was developed and calibrated using the experimental data to predict the change in the total strength of the soil-cement columns as a function of time. The results show that the deterioration rate increases when the diameter of the samples decreases. The model proposed has potential to be used to design more durable soil-cement columns in coastal environments.

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http://hdl.handle.net/10453/161418