Salt mixtures in stone weathering.

Autor: Godts S; Monuments Lab, Royal Institute for Cultural Heritage (KIK-IRPA), Brussels, Belgium. sebastiaan.godts@kikirpa.be.; Antwerp Cultural Heritage Sciences, ARCHES, University of Antwerp, Antwerp, Belgium. sebastiaan.godts@kikirpa.be.; Department of Geology, PProGRess, Ghent University, Ghent, Belgium. sebastiaan.godts@kikirpa.be., Orr SA; Institute for Sustainable Heritage, University College London (UCL), London, UK., Steiger M; Department of Chemistry, University of Hamburg, Hamburg, Germany., Stahlbuhk A; Department of Chemistry, University of Hamburg, Hamburg, Germany., De Kock T; Antwerp Cultural Heritage Sciences, ARCHES, University of Antwerp, Antwerp, Belgium., Desarnaud J; Monuments Lab, Royal Institute for Cultural Heritage (KIK-IRPA), Brussels, Belgium.; Laboratoire de Recherche Des Monuments Historiques (LMRH), Paris, France., De Clercq H; Monuments Lab, Royal Institute for Cultural Heritage (KIK-IRPA), Brussels, Belgium., Cnudde V; Department of Geology, PProGRess, Ghent University, Ghent, Belgium.; Department of Earth Sciences, Utrecht University, Utrecht, The Netherlands.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2023 Aug 16; Vol. 13 (1), pp. 13306. Date of Electronic Publication: 2023 Aug 16.
DOI: 10.1038/s41598-023-40590-y
Abstrakt: Salt related weathering of stones has been attributed to pressures exerted by repeated cycles of crystallization within pores. Relative Humidity (RH) is a key driver for dissolution and crystallization processes. Despite the prevalence of salt mixtures in natural environments, most experimental work has focused on single salts. Thus, the identification of salt mixture composition and their behavior is necessary to understand weathering. Thermodynamic calculations are used to analyze several thousand realistic salt mixtures found in weathered stone. We identify two common mixture types and their behavior. From at least 85 salt species theoretically present, 14 common salts are identified that occur most frequently and their critical RH points are discussed. These findings have wide-reaching implications for understanding salt weathering processes and informing the design of experimental stone weathering research.
(© 2023. Springer Nature Limited.)
Databáze: MEDLINE
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