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dc.contributor.authorColombo, Alessia
dc.contributor.authorGeiker, Mette Rica
dc.contributor.authorJustnes, Harald
dc.contributor.authorLauten, Rolf Andreas
dc.contributor.authorDe Weerdt, Klaartje
dc.date.accessioned2017-12-18T10:00:05Z
dc.date.available2017-12-18T10:00:05Z
dc.date.created2017-10-23T15:53:17Z
dc.date.issued2017
dc.identifier.citationCement and Concrete Research. 2017, 100 435-444.nb_NO
dc.identifier.issn0008-8846
dc.identifier.urihttp://hdl.handle.net/11250/2472350
dc.description.abstractThe effect of softwood calcium lignosulfonate, LSs, on the rheology and setting time of cement paste has been investigated. Two Portland cements with different surface area and C3A content were used. The lignosulfonate was added either immediately with the mixing water or delayed after 10 min of hydration. The cement pastes were characterized in terms of specific surface, rheology and heat of hydration. Extracted pore solutions were analysed for free lignosulfonate concentration and for changes in elemental composition. Immediate addition of LSs increased the specific surface, but not delayed addition. Correlations were found between rheology and surface coverage by LSs, as determined by adsorption isotherms, and between the setting time and the amount of free LSs in the pore solution. An increased setting retardation upon delayed addition related to an increased concentration of Al in the pore solution.nb_NO
dc.description.sponsorshipAcknowledgements. The authors wish to acknowledge the Norwegian Research Council (NFR 225358/O30) and Borregaard AS, Norway, for financing this research work. Gwenn Le Saoût and Nathalie Azéma, Ecole des Mines d'Alès, France, are also acknowledged for the helpful discussions. Irene Bragstad, SINTEF, Norway, is acknowledged for performing the BET measurements. Syverin Lierhagen, NTNU, Norway, is acknowledged for performing the ICP-MS analysis.nb_NO
dc.language.isoengnb_NO
dc.publisherElsevier Ltd.nb_NO
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.no*
dc.subjectLignosulfonatenb_NO
dc.subjectAdmixturenb_NO
dc.subjectRheologynb_NO
dc.subjectSetting retardationnb_NO
dc.subjectAdsorptionnb_NO
dc.subjectCementnb_NO
dc.titleOn the effect of calcium lignosulfonate on the rheology and setting time of cement pastenb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.rights.holder© 2017 Elsevier B.V. All rights reserved. This is the authors' accepted and refereed manuscript to the article, post-print. Released with a Creative Commons Attribution Non-Commercial No Derivatives License. The final publication is available at https://doi.org/10.1016/j.cemconres.2017.06.009nb_NO
dc.subject.nsiVDP::Technology: 500nb_NO
dc.source.pagenumber435-444nb_NO
dc.source.volume100nb_NO
dc.source.journalCement and Concrete Researchnb_NO
dc.identifier.doi10.1016/j.cemconres.2017.06.009
dc.identifier.cristin1506951
dc.relation.projectNorges forskningsråd: 225358nb_NO
cristin.unitcode7401,30,40,0
cristin.unitnameArkitektur, byggematerialer og konstruksjoner
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode2


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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
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