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dc.contributor.author
Wyrzykowski, Mateusz
dc.contributor.author
Gajewicz-Jaromin, Agata M.
dc.contributor.author
McDonald, Peter J.
dc.contributor.author
Dunstan, David J.
dc.contributor.author
Scrivener, Karen L.
dc.contributor.author
Lura, Pietro
dc.date.accessioned
2019-07-30T09:03:02Z
dc.date.available
2019-07-24T02:21:37Z
dc.date.available
2019-07-30T09:03:02Z
dc.date.issued
2019-07-05
dc.identifier.issn
1932-7455
dc.identifier.issn
1932-7447
dc.identifier.other
10.1021/acs.jpcc.9b02436
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/354784
dc.identifier.doi
10.3929/ethz-b-000354784
dc.description.abstract
The mobility of water within the microstructure of hardened cement paste has been at the center of a long-lasting debate, motivated by the need to understand the fundamental mechanisms that play a role in drying, shrinkage, creep, and thermal expansion. Our 1H NMR results show for the first time that externally applied pressure can lead to migration of water within the microstructure (microdiffusion). Upon compression, the gel water signal decreases. For the most part, this is accommodated by a corresponding increase in the signal of water in larger, interhydrate, and capillary spaces. However, there is also an increase in the signal corresponding to the water in most confined spaces. Normally, such tiny spaces are classified as hydrate interlayers. However, we do not conclude that there is a significant increase in interlayer water. Rather, we attribute this part of the increase to a rearrangement of the microstructure upon compression with some water confined in increasingly small gel pore spaces. These findings show that the deformability of the microstructure (C–S–H gel) at the expense of gel porosity may explain part of the macroscopic deformations due to short-term creep.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
American Chemical Society
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.title
Water Redistribution-Microdiffusion in Cement Paste under Mechanical Loading Evidenced by 1H NMR
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2019-06-07
ethz.journal.title
The Journal of Physical Chemistry C
ethz.journal.volume
123
en_US
ethz.journal.issue
26
en_US
ethz.journal.abbreviated
J. Phys. Chem. C
ethz.pages.start
16153
en_US
ethz.pages.end
16163
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Washington, DC
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2019-07-24T02:21:43Z
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2019-07-30T09:03:12Z
ethz.rosetta.lastUpdated
2023-02-06T17:28:02Z
ethz.rosetta.versionExported
true
ethz.COinS
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