Long-term durability of underground reinforced concrete pipes in natural chloride and carbonation environments

Nguyen, QD; Castel, A

Long-term durability of underground reinforced concrete pipes in natural chloride and carbonation environments

Nguyen, QD Castel, A

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Publisher:: ELSEVIER SCI LTD
Publication Type:: Journal Article
Citation:: Construction and Building Materials, 2023, 394
Issue Date:: 2023-08-29

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Field	Value	Language
dc.contributor.author	Nguyen, QD
dc.contributor.author	Castel, A https://orcid.org/0000-0003-1619-9643
dc.date.accessioned	2024-04-11T07:12:32Z
dc.date.available	2024-04-11T07:12:32Z
dc.date.issued	2023-08-29
dc.identifier.citation	Construction and Building Materials, 2023, 394
dc.identifier.issn	0950-0618
dc.identifier.issn	1879-0526
dc.identifier.uri	http://hdl.handle.net/10453/177760
dc.description.abstract	In this study, concrete cores extracted from different underground reinforced concrete pipelines exposed to chloride and carbonation environments were investigated. The age of the pipelines was ranging from 43 to 70 years. The main purpose of this study was to determine the minimum concrete cover to reinforcement allowing 100 years of service life with respect to the exposure conditions of the pipelines. Chloride content at the steel–concrete interface, the carbonation depth, the reinforcement corrosion and other concrete durability related properties were assessed. The service-life of the pipelines was thoroughly discussed based on both corrosion rates measured and corrosion induced concrete cracking observed. The high humidity in concrete pipes is suspected to greatly delay oxygen renewal at the steel–concrete interface. Concrete cover of 25 mm and 20 mm seem adequate for 100 years of service life in chloride and carbonation environments respectively.
dc.language	English
dc.publisher	ELSEVIER SCI LTD
dc.relation	Concrete Pipe Association of Australasia
dc.relation.ispartof	Construction and Building Materials
dc.relation.isbasedon	10.1016/j.conbuildmat.2023.132230
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering, 1202 Building
dc.subject.classification	Building & Construction
dc.subject.classification	3302 Building
dc.subject.classification	4005 Civil engineering
dc.subject.classification	4016 Materials engineering
dc.title	Long-term durability of underground reinforced concrete pipes in natural chloride and carbonation environments
dc.type	Journal Article
utslib.citation.volume	394
utslib.for	0905 Civil Engineering
utslib.for	1202 Building
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	closed_access	*
dc.date.updated	2024-04-11T07:12:30Z
pubs.publication-status	Published
pubs.volume	394

Abstract:

In this study, concrete cores extracted from different underground reinforced concrete pipelines exposed to chloride and carbonation environments were investigated. The age of the pipelines was ranging from 43 to 70 years. The main purpose of this study was to determine the minimum concrete cover to reinforcement allowing 100 years of service life with respect to the exposure conditions of the pipelines. Chloride content at the steel–concrete interface, the carbonation depth, the reinforcement corrosion and other concrete durability related properties were assessed. The service-life of the pipelines was thoroughly discussed based on both corrosion rates measured and corrosion induced concrete cracking observed. The high humidity in concrete pipes is suspected to greatly delay oxygen renewal at the steel–concrete interface. Concrete cover of 25 mm and 20 mm seem adequate for 100 years of service life in chloride and carbonation environments respectively.

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http://hdl.handle.net/10453/177760