Salt crystallization test of repair lime plaster containing zeolite

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F21%3A00353055" target="_blank" >RIV/68407700:21110/21:00353055 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.5593/sgem2021/6.1/s26.53" target="_blank" >http://dx.doi.org/10.5593/sgem2021/6.1/s26.53</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5593/sgem2021/6.1/s26.53" target="_blank" >10.5593/sgem2021/6.1/s26.53</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Salt crystallization test of repair lime plaster containing zeolite

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Salt crystallization test of repair lime plaster containing zeolite

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

21th International Multidisciplinary Scientific Geoconference SGEM 2021 Conference Proceedings

ISBN

978-619-7603-30-9

ISSN

1314-2704

e-ISSN

—

Počet stran výsledku

8

Strana od-do

417-424

Název nakladatele

STEF92 Technology Ltd.

Místo vydání

Sofia

Místo konání akce

Albena

Datum konání akce

14. 8. 2021

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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