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The characterization of chloride effect on concrete water sorption and its application in the modelling of concrete conditions in tidal zones

Wang, Y; Oleiwi, HM; Wang, C-Y; Xiang, N; Geng, J

Authors

Profile image of Yu Wang

Dr Yu Wang Y.Wang@salford.ac.uk
Associate Professor/Reader

HM Oleiwi

C-Y Wang

N Xiang

J Geng



Abstract

Concrete exposed to cyclic wetting and drying in salty water conditions is thought to be subjected to an accelerated ingress of chloride from the outside environment, and prone to a worsening deterioration process inside. Additionally, there is an osmotic effect on salty water flow in porous concrete. However, so far, a fully profound understanding of the coupled cyclic wetting–drying and osmosis effects on the chloride movement in concrete is still limited. This paper reports on a comprehensive study on the
topic. A series of experimental tests was conducted initially for the vapour-water sorption isotherm (VWSI) of normal concrete of different porosity and chloride content. Thereafter, a novel mathematical model was proposed and validated to characterise the effect of chloride salt on the vapour absorption and water retention behaviour of concrete. Finally, the proposed haracteristic model was implemented in a numerical model to simulate chloride ingress in concrete in tidal zones. The vapour-water sorption sotherm model successfully provides an effective tool to quantify the coupled influence of cyclic wetting–drying and osmosis on chloride transportation in concrete

Citation

Wang, Y., Oleiwi, H., Wang, C.-Y., Xiang, N., & Geng, J. (2020). The characterization of chloride effect on concrete water sorption and its application in the modelling of concrete conditions in tidal zones. Construction and Building Materials, 253, 119074. https://doi.org/10.1016/j.conbuildmat.2020.119074

Journal Article Type Article
Acceptance Date Apr 5, 2020
Online Publication Date Apr 25, 2020
Publication Date Aug 30, 2020
Deposit Date Apr 27, 2020
Publicly Available Date Apr 25, 2021
Journal Construction and Building Materials
Print ISSN 0950-0618
Publisher Elsevier
Volume 253
Pages 119074
DOI https://doi.org/10.1016/j.conbuildmat.2020.119074
Publisher URL https://doi.org/10.1016/j.conbuildmat.2020.119074
Related Public URLs http://www.journals.elsevier.com/construction-and-building-materials/

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