期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 23, 期 5, 页码 1751-1759出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2008.08.006
关键词
Paints; Soluble salts; Salt crystallization; Salt decay; Historical buildings buildings; Old masonry; Porous building materials; NMR; MRI
Paints are widely used as finishing coats on all kinds of buildings. Aiming at a better understanding of how paints influence salt decay processes, experiments were performed on painted and unpainted specimens: (a) crystallization tests on specimens composed of a plaster on brick substrate: (b) drying experiments on stone specimens, monitored by means of a two-dimensional magnetic resonance imaging technique. The results of these experiments suggest that: (i) paints tend to increase the presence of moisture and salt deposition on or close to the surface of walls; (ii) the salt-accumulation behaviour and related features of different plasters/renders may be differently affected by paint layers. (c) 2008 Elsevier Ltd. All rights reserved.
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