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dc.contributor.author
Zhang, Zhidong
dc.contributor.author
Angst, Ueli
dc.date.accessioned
2022-09-27T08:04:49Z
dc.date.available
2022-09-26T14:37:34Z
dc.date.available
2022-09-27T08:04:49Z
dc.date.issued
2022-12
dc.identifier.issn
0008-8846
dc.identifier.other
10.1016/j.cemconres.2022.106990
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/572775
dc.identifier.doi
10.3929/ethz-b-000572775
dc.description.abstract
Carbonation of cement-based materials may lead to durability problems, so that it is necessary to find a way to reduce the effect of carbonation on concrete durability. This study investigated the effects of cellulose nanofibrils (CNFs) on the durability of carbonated cement-based materials. Two dosages of CNFs were used to prepare cement pastes and mortars. Before and after accelerated carbonation (4 % CO2 concentration and 57 % relative humidity), their microstructure, mineralogical composition, moisture retention capacity, drying kinetics, and water absorption were measured. Results show that the contents of hydration products (CH, C-S-H, and ettringite) slightly decrease with the increase of CNFs dosage. After carbonation, the carbonation ratios of hydration products decrease with CNFs dosage so that more hydration products remain in the carbonated materials. The calcite content was found to increase with the dosage of CNFs which may help the transformation of other metastable calcium carbonates to calcite. The coarsening effect of carbonation on pore structure was clearly observed in measured pore size distribution for all materials, while our results show that this effect is weakened by CNFs. Moisture transport is clearly accelerated by carbonation, but the acceleration rate is diminished with the increasing dosage of CNFs, suggesting that CNFs are able to reduce the microstructural damage by carbonation.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Elsevier
en_US
dc.rights.uri
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject
Carbonation
en_US
dc.subject
Permeability
en_US
dc.subject
Water absorption
en_US
dc.subject
Cement hydration
en_US
dc.subject
Durability
en_US
dc.title
Microstructure and moisture transport in carbonated cement-based materials incorporating cellulose nanofibrils
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
dc.date.published
2022-09-24
ethz.journal.title
Cement and Concrete Research
ethz.journal.volume
162
en_US
ethz.journal.abbreviated
Cement Concrete Res
ethz.pages.start
106990
en_US
ethz.size
17 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.grant
Enhanced Durability Predictions of Reinforced Concrete Exposed to Corrosive Environments (follow-up proposal)
en_US
ethz.grant
Towards mastering the long-standing challenge of ageing infrastructures in corrosive environments
en_US
ethz.grant
New precast pervious concrete pavers incorporated with demolition waste as efficient CO2 storage materials
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Oxford
en_US
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.grant.agreementno
194812
ethz.grant.agreementno
848794
ethz.grant.agreementno
SEED-21 21-1
ethz.grant.fundername
SNF
ethz.grant.fundername
EC
ethz.grant.fundername
ETHZ
ethz.grant.funderDoi
10.13039/501100001711
ethz.grant.funderDoi
10.13039/501100000780
ethz.grant.funderDoi
10.13039/501100003006
ethz.grant.program
SNF-Förderungsprofessuren: Fortsetzungsgesuche
ethz.grant.program
H2020
ethz.grant.program
ETH Seeds
ethz.date.deposited
2022-09-26T14:37:34Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2022-09-27T08:04:51Z
ethz.rosetta.lastUpdated
2023-02-07T06:33:22Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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