Hygroscopic behavior of zeolite lightened mortars contaminated with Na2SO4

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

Hygroscopic behavior of zeolite lightened mortars contaminated with Na2SO4

Original language description

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.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20501 - Materials engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2024

Confidentiality

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

Article name in the collection

AIP Conference Proceedings

ISBN

—

ISSN

1551-7616

e-ISSN

1551-7616

Number of pages

4

Pages from-to

"070001-1"-"070001-4"

Publisher name

AIP Conference Proceedings

Place of publication

New York

Event location

Heraklion, Kréta

Event date

Sep 19, 2022

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

001244923000067