Effect of application of lime plasters to salt-laden bricks

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F16%3A00462129" target="_blank" >RIV/68378297:_____/16:00462129 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Effect of application of lime plasters to salt-laden bricks
Original language description
Historic masonry is usually contaminated with soluble salts that change the properties of the original materials. The design of mortars for historical repairs should, therefore, take this condition into account. The aim of this study is to investigate the performance of lime plasters cured on a salt laden substrate. A lime mortar (L) and a lime mortar with a traditional hydrophobic admixture (LO) were applied to sodium sulphate laden bricks, and the properties of the plaster/brick systems were examined after curing. The results indicated that L mortar works as a salt-transporting plaster, whereas LO functions as a salt-blocking plaster and the salt accumulates preferentially at the interface between the plaster and the brick. The capillarity curves showed that the hydrophobic effect of LO plaster was significantly affected despite the small amount of salt that migrated from the brick to the plaster during curing. No change in the water absorption kinetics was observed for L plaster cured on a salt-laden brick and the drying process was only slightly altered while it extracted more than 50 wt.% of the salt initially present in the brick. In contrast, the hydrophobic plaster significantly reduced the drying rate in both salt-free and salt-contaminated bricks.
Czech name
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Czech description
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Project
<a href="/en/project/LO1219" target="_blank" >LO1219: Sustainable advanced development of CET</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
International RILEM Conference on Materials, Systems and Structures in Civil Engineering. Segment on Historical Masonry
ISBN
978-2-35158-174-2
ISSN
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e-ISSN
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Number of pages
10
Pages from-to
117-126
Publisher name
RILEM Publications
Place of publication
Paris
Event location
Lyngby
Event date
Aug 22, 2016
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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