dc.contributor.author | Colombo, Alessia | |
dc.contributor.author | Geiker, Mette Rica | |
dc.contributor.author | Justnes, Harald | |
dc.contributor.author | Lauten, Rolf Andreas | |
dc.contributor.author | De Weerdt, Klaartje | |
dc.date.accessioned | 2017-12-18T10:00:05Z | |
dc.date.available | 2017-12-18T10:00:05Z | |
dc.date.created | 2017-10-23T15:53:17Z | |
dc.date.issued | 2017 | |
dc.identifier.citation | Cement and Concrete Research. 2017, 100 435-444. | nb_NO |
dc.identifier.issn | 0008-8846 | |
dc.identifier.uri | http://hdl.handle.net/11250/2472350 | |
dc.description.abstract | The 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.sponsorship | Acknowledgements. 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.iso | eng | nb_NO |
dc.publisher | Elsevier Ltd. | nb_NO |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no | * |
dc.subject | Lignosulfonate | nb_NO |
dc.subject | Admixture | nb_NO |
dc.subject | Rheology | nb_NO |
dc.subject | Setting retardation | nb_NO |
dc.subject | Adsorption | nb_NO |
dc.subject | Cement | nb_NO |
dc.title | On the effect of calcium lignosulfonate on the rheology and setting time of cement paste | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | acceptedVersion | nb_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.2017.06.009 | nb_NO |
dc.subject.nsi | VDP::Technology: 500 | nb_NO |
dc.source.pagenumber | 435-444 | nb_NO |
dc.source.volume | 100 | nb_NO |
dc.source.journal | Cement and Concrete Research | nb_NO |
dc.identifier.doi | 10.1016/j.cemconres.2017.06.009 | |
dc.identifier.cristin | 1506951 | |
dc.relation.project | Norges forskningsråd: 225358 | nb_NO |
cristin.unitcode | 7401,30,40,0 | |
cristin.unitname | Arkitektur, byggematerialer og konstruksjoner | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 2 | |