Hygroscopic behavior of zeolite lightened mortars contaminated with Na2SO4

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F24%3A00375595" target="_blank" >RIV/68407700:21110/24:00375595 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1063/5.0210347" target="_blank" >https://doi.org/10.1063/5.0210347</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0210347" target="_blank" >10.1063/5.0210347</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hygroscopic behavior of zeolite lightened mortars contaminated with Na2SO4

Popis výsledku v původním jazyce

Masonry, rendering, and plastering mortars are during their lifetime impressed with many harmful factors that negatively affect their functional, technical, and durability parameters. Inorganic salt and water are considered as the most aggressive agents damaging mortars and other inbuilt structural materials. The excessive salt presence and high moisture content are typical especially for older buildings, where water-proof horizontal insulation is missing or in the case of accidents of water or sewage pipeline, flooding, improper restoration treatments, buildings usage, etc. Except salt crystallization, their hygroscopicity represents serious risk for material vulnerable to moisture induced damage. On this account, the analysis of hygroscopic behavior of non-hydrophobized mortars that should find use in masonry repair is the subject of the presented research. The examined mortars were produced from different type of binder: i) lime hydrate, ii) natural hydraulic lime, iii) lime-cement blend, and zeolite, which fully replaced silica sand in reference samples. The basic characterization of mortars was done by the assessment of their structural parameters, mechanical and thermal properties. Specific attention was paid to the analysis of water vapor storage capacity of mortars, which was done by the measurement of sorption and desorption isotherms. The use of zeolite enabled to produce highly porous mortars with sufficient mechanical strength and high sorption capacity for water vapor which can find use in passive control of indoor climate. According to IUPAC classification, the sorption/desorption isotherm were of type IV, i.e. with hysteresis loop and obvious capillary condensation.

Název v anglickém jazyce

Hygroscopic behavior of zeolite lightened mortars contaminated with Na2SO4

Popis výsledku anglicky

Masonry, rendering, and plastering mortars are during their lifetime impressed with many harmful factors that negatively affect their functional, technical, and durability parameters. Inorganic salt and water are considered as the most aggressive agents damaging mortars and other inbuilt structural materials. The excessive salt presence and high moisture content are typical especially for older buildings, where water-proof horizontal insulation is missing or in the case of accidents of water or sewage pipeline, flooding, improper restoration treatments, buildings usage, etc. Except salt crystallization, their hygroscopicity represents serious risk for material vulnerable to moisture induced damage. On this account, the analysis of hygroscopic behavior of non-hydrophobized mortars that should find use in masonry repair is the subject of the presented research. The examined mortars were produced from different type of binder: i) lime hydrate, ii) natural hydraulic lime, iii) lime-cement blend, and zeolite, which fully replaced silica sand in reference samples. The basic characterization of mortars was done by the assessment of their structural parameters, mechanical and thermal properties. Specific attention was paid to the analysis of water vapor storage capacity of mortars, which was done by the measurement of sorption and desorption isotherms. The use of zeolite enabled to produce highly porous mortars with sufficient mechanical strength and high sorption capacity for water vapor which can find use in passive control of indoor climate. According to IUPAC classification, the sorption/desorption isotherm were of type IV, i.e. with hysteresis loop and obvious capillary condensation.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20501 - Materials 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

2024

Kód důvěrnosti údajů

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

Název statě ve sborníku

AIP Conference Proceedings

ISBN

—

ISSN

1551-7616

e-ISSN

1551-7616

Počet stran výsledku

4

Strana od-do

"070001-1"-"070001-4"

Název nakladatele

AIP Conference Proceedings

Místo vydání

New York

Místo konání akce

Heraklion, Kréta

Datum konání akce

19. 9. 2022

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

001244923000067