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dc.contributor.author
Angst, Ueli M.
dc.contributor.author
Elsener, Bernhard
dc.date.accessioned
2018-01-23T12:53:38Z
dc.date.available
2018-01-23T12:53:13Z
dc.date.available
2018-01-23T12:53:38Z
dc.date.available
2018-01-12T09:41:51Z
dc.date.available
2017-10-04T14:28:23Z
dc.date.available
2017-10-05T06:46:28Z
dc.date.issued
2017-08
dc.identifier.issn
2375-2548
dc.identifier.other
10.1126/sciadv.1700751
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/234747
dc.identifier.doi
10.3929/ethz-b-000189835
dc.description.abstract
Forecasting the life of concrete infrastructures in corrosive environments presents a long-standing and socially relevant challenge in science and engineering. Chloride-induced corrosion of reinforcing steel in concrete is the main cause for premature degradation of concrete infrastructures worldwide. Since the middle of the past century, this challenge has been tackled by using a conceptual approach relying on a threshold chloride concentration for corrosion initiation (Ccrit). All state-of-the-art models for forecasting chloride-induced steel corrosion in concrete are based on this concept. We present an experiment that shows that Ccrit depends strongly on the exposed steel surface area. The smaller the tested specimen is, the higher and the more variable Ccrit becomes. This size effect in the ability of reinforced concrete to withstand corrosion can be explained by the local conditions at the steel-concrete interface, which exhibit pronounced spatial variability. The size effect has major implications for the future use of the common concept of Ccrit. It questions the applicability of laboratory results to engineering structures and the reproducibility of typically small-scale laboratory testing. Finally, we show that the weakest link theory is suitable to transform Ccrit from small to large dimensions, which lays the basis for taking the size effect into account in the science and engineering of forecasting the durability of infrastructures.
en_US
dc.format
application/pdf
dc.language.iso
en
en_US
dc.publisher
AAAS
dc.rights.uri
http://creativecommons.org/licenses/by-nc/4.0/
dc.title
The size effect in corrosion greatly influences the predicted life span of concrete infrastructures
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution-NonCommercial 4.0 International
ethz.journal.title
Science Advances
ethz.journal.volume
3
en_US
ethz.journal.issue
8
en_US
ethz.journal.abbreviated
Sci Adv
ethz.pages.start
e1700751
en_US
ethz.size
9 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.publication.place
Washington, DC
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02606 - Institut für Baustoffe (IfB) / Institute for Building Materials::09593 - Angst, Ueli / Angst, Ueli
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02606 - Institut für Baustoffe (IfB) / Institute for Building Materials::09593 - Angst, Ueli / Angst, Ueli
en_US
ethz.date.deposited
2017-10-04T14:28:24Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2018-01-25T14:54:35Z
ethz.rosetta.lastUpdated
2024-02-02T03:48:29Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
dc.identifier.olduri
http://hdl.handle.net/20.500.11850/189835
dc.identifier.olduri
http://hdl.handle.net/20.500.11850/227914
ethz.COinS
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