Počet záznamů: 1
Effect of application of lime plasters to salt-laden bricks
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SYSNO ASEP 0462129 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Effect of application of lime plasters to salt-laden bricks Tvůrce(i) Nunes, Cristiana Lara (UTAM-F) RID, ORCID, SAI
Slížková, Zuzana (UTAM-F) RID, SAI, ORCIDCelkový počet autorů 2 Zdroj.dok. International RILEM Conference on Materials, Systems and Structures in Civil Engineering. Segment on Historical Masonry. - Paris : RILEM Publications, 2016 / Rörig-Dalgaard I. ; Ioannou I. - ISBN 978-2-35158-174-2 Rozsah stran s. 117-126 Poč.str. 10 s. Forma vydání Tištěná - P Akce International RILEM Conference on Materials, Systems and Structures in Civil Engineering. Conference segment on Historical Masonry Datum konání 22.08.2016 - 24.08.2016 Místo konání Lyngby Země DK - Dánsko Typ akce WRD Jazyk dok. eng - angličtina Země vyd. FR - Francie Klíč. slova lime plaster ; salt-laden bricks ; historic mortars Vědní obor RIV AL - Umění, architektura, kulturní dědictví CEP LO1219 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Anotace 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. Pracoviště Ústav teoretické a aplikované mechaniky Kontakt Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285 Rok sběru 2017
Počet záznamů: 1