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dc.contributor.authorPlusquellec, Gilles
dc.contributor.authorGeiker, Mette Rica
dc.contributor.authorLindgård, Jan
dc.contributor.authorDe Weerdt, Klaartje
dc.identifier.citationCement and Concrete Research. 2018, 105 111-125.nb_NO
dc.description.abstractIn concrete affected by alkali–silica reaction (ASR), aggregates react in the high pH environment and cause deleterious expansion and cracking of the concrete. Leaching of alkali metals from the concrete might therefore locally reduce ASR. However, few data on alkali metals leaching are available in the literature. Our goal was to document the alkali metal leaching and to build-up an alkali inventory (the amount in solid and in solution, and the amount released by the aggregates) in a full-scale structure, the 50-year-old Votna I dam in Norway. Free alkali metal profiles were determined on cores taken at four locations with different exposure conditions: permanently immersed, periodically immersed, exposed to rain, or sheltered. Alkali leaching was observed at all four locations up to a depth of 100 mm. The leached zone exhibited less intense cracking than the non-leached concrete, indicating that the alkali leaching might be limiting ASRnb_NO
dc.description.sponsorshipAcknowledgments. The authors acknowledge the financial support from the project 236661/O30 “Alkali–silica reaction in concrete – reliable concept for performance testing”, managed by SINTEF Building and Infrastructure and supported by the Norwegian Research Council and industrial partners: Norcem, NorStone, Norsk Stein, Hydro Energy, Axion, and the Norwegian Roads Administration. We are also very grateful to Havvagul Vurucu (NTNU), Tone Anita Østnor (SINTEF), and Anne‐Kristin Mjøen (SINTEF) for their help during the experimental study. The authors also want to thank Marit Haugen (SINTEF) for her help with the planepolished section analysis and for the documentation of the Votna I dam, Syverin Lierhagen (NTNU) for the ICP‐MS analysis, and Torill Sørlokk (NTNU) for the XRF analysis. We are also very grateful to Benoit Fournier, Josée Duchesne and Mathieu Champagne (Université Laval), Børge Johannes Wigum (NTNU/Heildelberg Cement), and Max Hendriks for our fruitful discussions. The authors also acknowledge Lawrence White (Language Support Centre) for the proofreading.nb_NO
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.subjectAlkali-aggregate reaction (C)nb_NO
dc.subjectpH (A)nb_NO
dc.subjectAlkalis (D)nb_NO
dc.subjectPore solution (B)nb_NO
dc.subjectConcrete aggregatesnb_NO
dc.titleDetermining the free alkali metal content in concrete – Case study of an ASR-affected damnb_NO
dc.title.alternativeDetermining the free alkali metal content in concrete – Case study of an ASR-affected damnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.rights.holder© 2018 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
dc.subject.nsiVDP::Teknologi: 500nb_NO
dc.source.journalCement and Concrete Researchnb_NO
dc.relation.projectNorges forskningsråd: 236661nb_NO
cristin.unitnameArkitektur, byggematerialer og konstruksjoner

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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
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