Print Email Facebook Twitter Revisiting concrete frost salt scaling Title Revisiting concrete frost salt scaling: On the role of the frozen salt solution micro-structure Author Bahafid, Sara (Norwegian University of Science and Technology (NTNU)) Hendriks, M.A.N. (TU Delft Concrete Structures; Norwegian University of Science and Technology (NTNU)) Jacobsen, Stefan (Norwegian University of Science and Technology (NTNU)) Geiker, Mette (Norwegian University of Science and Technology (NTNU)) Date 2022 Abstract We simulate the glue-spall stress due to mechanical interactions between a frozen saline solution (brine-ice composite) and a non-air entrained concrete surface including the impact of the micro-structure of the frozen solution. The presence of brine channels at the ice/concrete interface was found to be a prerequisite to induce stress during freezing and hence for scaling to occur. Pure ice does not result in scaling as it does not have brine channels. Furthermore, the size of the brine channels and their distribution was found determinant for the magnitude of the glue-spall stress in the concrete and the experimentally observed pessimum effect of a medium salt concentration was explained based on the change of the microstructure of the brine-ice composite at different salt concentrations and temperatures. The predicted results are in good agreement with the experimental observations and the few numerical demonstrations related to frost salt scaling in the literature. Subject DurabilityFreezing and thawingFrost salt scalingGlue-spallModelling To reference this document use: http://resolver.tudelft.nl/uuid:605bfbbd-6873-4aeb-9c72-314650096b1a DOI https://doi.org/10.1016/j.cemconres.2022.106803 Embargo date 2022-11-14 ISSN 0008-8846 Source Cement and Concrete Research, 157 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2022 Sara Bahafid, M.A.N. Hendriks, Stefan Jacobsen, Mette Geiker Files PDF 1_s2.0_S0008884622000941_main.pdf 1.37 MB Close viewer /islandora/object/uuid:605bfbbd-6873-4aeb-9c72-314650096b1a/datastream/OBJ/view