The influence of building materials on salt formation in rural environments |
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| Authors: | Vesna Matovi? Suzana Eri? Danica Sre?kovi?-Bato?anin Philippe Colomban Aleksandar Kremenovi? |
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| Institution: | 1. Department of Mineralogy, Crystallography, Petrology and Geochemistry, Faculty of Mining and Geology, University of Belgrade, Djusina 7, Belgrade, Serbia
2. LADIR, UMR 7075 CNRS, Université Pierre and Marie Curie, C49, 4 Place Jussieu, 75252, Paris 05, France
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| Abstract: | Blocks of limestone and sandstone used in walls of the Manasija Monastery complex showed damage caused by the efflorescence and subflorescence of different salts in a low-pollution rural environment. In addition to common salts such as thenardite, thermonatrite, trona and gypsum, a small amount of eugsterite and darapskite was also present. Although these sodium and sodium–calcium salts formed where cement mortar was used for repairs, the lithological type and chemical composition of the substrate also had an influence on the development of distinct salts. The interaction between limestone and sandstone (substrates) and a solution rich in sodium (without calcium) was successfully simulated in the laboratory. The presence of gypsum and sodium–calcium sulphate, as experimental products, solely on the limestones indicated that, in addition to the cement-mortar solution, part of the calcium required for the formation of calcium and double sodium–calcium salts could occur from this substrate. |
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