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Title: SALT CRYSTALLIZATION TEST OF REPAIR LIME PLASTER CONTAINING ZEOLITE
SALT CRYSTALLIZATION TEST OF REPAIR LIME PLASTER CONTAINING ZEOLITE

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M. Zaleska; M. Pavlikova; A. Pivak; O. Jankovsky; Z. Pavlik
10.5593/sgem2021/6.1/s26.53
1314-2704
978-619-7603-30-9
English
21
6.1
• Prof. DSc. Oleksandr Trofymchuk, UKRAINE
• Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Green Buildings Technologies and Materials
Natural zeolites having a structure with a large number of cavities allow design lightweight plasters with improved thermal insulation parameters. Focusing on the assessment of plasters’ durability, their resistance to salt damage should to be taken into consideration, especially in case of their application in repair of salt laden masonry. Although the crystallization of salts in plasters presents a serious problem, there is as yet no standard procedure for its evaluation. To predict salt damage of lime-based plasters in practice, they were subjected to accelerated laboratory salt crystallization test, where sodium chloride solution and cyclic drying and wetting were the observed degradation factors. Studied materials were lime plaster and lime-zeolite plaster, where zeolite was used as a full replacement of silica sand. A comprehensive characterization of both plasters performed before crystallization test cycles included specific density, bulk density, total open porosity, compressive strength, flexural strength, and dynamic modulus of elasticity tests. The assessment of salt damage was done based on the photographical observations, optical microscopy, and mass change after salt crystallization experiment. Obtained results of the plasters’ durability with respect to the salt resistance provided the necessary information for improvement of laboratory salt crystallization tests.
conference
https://www.sgem.org/index.php/jresearch-article?citekey=Zaleska202126417424
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21st International Multidisciplinary Scientific GeoConference SGEM 2021
21st International Multidisciplinary Scientific GeoConference SGEM 2021, 16 - 22 August, 2021
Proceedings Paper
STEF92 Technology
SGEM International Multidisciplinary Scientific GeoConference
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Serbian Acad Sci & Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts & Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci
271-278
16 - 22 August, 2021
website
cdrom
8261
salt damage; crystallization test; lime plaster; zeolite; sodium chloride