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Thermo-chemo-mechanical understanding of damage development in porous cementitious materials exposed to sodium chloride under thermal cycling
Journal article   Peer reviewed

Thermo-chemo-mechanical understanding of damage development in porous cementitious materials exposed to sodium chloride under thermal cycling

Fadi Althoey, Paul Stutzman, Michael Steiger and Yaghoob Farnam
Cement and concrete research, v 147, 106497
Sep 2021
DOI: https://doi.org/10.1016/j.cemconres.2021.106497
Featured in Collection :   UN Sustainable Development Goals @ Drexel

Abstract

Concrete Damage Mirabilite Phase change Sodium chloride Thermal cycle
Interactions between sodium chloride (NaCl) and cementitious materials have shown to facilitate premature deteriorations of concrete in cold environments. NaCl chemically interacts with tri‑calcium aluminate (C3A) and monosulfate (AFm) resulting in a chemical phase change during thermal cycling. The chemical phase change can create damage in porous cementitious materials. Experimental and thermodynamic modeling were conducted in this study to understand the thermo-chemo-physical interactions between NaCl and cementitious materials and identify the source of the chemical phase change. Results indicates that the destructive chemical phase change is the formation of mirabilite (Na2SO4.10H2O). It was found that the phase change temperature of mirabilite is strongly influenced by the concentration of NaCl in the solution. At high concentration NaCl solutions (>10% by mass), mirabilite is formed due to the release of a small amount of sulfate ions from the concrete matrix.

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13 citations in Web of Science
11 citations in Scopus

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UN Sustainable Development Goals (SDGs)

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#12 Responsible Consumption & Production

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Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Construction & Building Technology
Materials Science, Multidisciplinary
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