Salts accumulation effect on durability of non-hydrophobized renovation plasters

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F23%3A00368960" target="_blank" >RIV/68407700:21110/23:00368960 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.5593/sgem2023/6.1/s26.40" target="_blank" >https://doi.org/10.5593/sgem2023/6.1/s26.40</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5593/sgem2023/6.1/s26.40" target="_blank" >10.5593/sgem2023/6.1/s26.40</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Salts accumulation effect on durability of non-hydrophobized renovation plasters

Popis výsledku v původním jazyce

This paper focuses on the experimental testing of hydrated lime-, natural hydraulic lime-, and lime-cement-based mortars with improved salt accumulation capacity. Moreover, the effect of varying content of non-hydrophobised expanded perlite (EP) in the mortars on their durability was investigated. The substation of silica sand by expanded perlite was 25%, 50%, 75% and 100% by volume. A modified method based on the adsorption of free salt ions from solution was used to measure the chloride binding isotherms. The salt concentration was analyzed using an apparatus working on liquid chromatography technique. The data acquired were compared with reference mortars with natural silica sand as an only aggregate. The use of expanded perlite significantly increased the chloride binding capacity of the tested mortars, while no deterioration was observed for samples contaminated with salts. The results obtained thus validated the applicability of most of the mortars tested for the repair of masonry structures including the restoration of renders and plasters. When repairing historic masonry, compatibility issues must be considered, in this case with respect to the type of binder used.

Název v anglickém jazyce

Salts accumulation effect on durability of non-hydrophobized renovation plasters

Popis výsledku anglicky

This paper focuses on the experimental testing of hydrated lime-, natural hydraulic lime-, and lime-cement-based mortars with improved salt accumulation capacity. Moreover, the effect of varying content of non-hydrophobised expanded perlite (EP) in the mortars on their durability was investigated. The substation of silica sand by expanded perlite was 25%, 50%, 75% and 100% by volume. A modified method based on the adsorption of free salt ions from solution was used to measure the chloride binding isotherms. The salt concentration was analyzed using an apparatus working on liquid chromatography technique. The data acquired were compared with reference mortars with natural silica sand as an only aggregate. The use of expanded perlite significantly increased the chloride binding capacity of the tested mortars, while no deterioration was observed for samples contaminated with salts. The results obtained thus validated the applicability of most of the mortars tested for the repair of masonry structures including the restoration of renders and plasters. When repairing historic masonry, compatibility issues must be considered, in this case with respect to the type of binder used.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA21-06582S" target="_blank" >GA21-06582S: Experimentální a počítačová analýza transportu, akumulace a krystalizace solí v nehydrofobizovaných omítkových maltách</a><br>

Návaznosti

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

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of 23rd International Multidisciplinary Scientific GeoConference SGEM 2023,volume 23, issue 6.1

ISBN

978-619-7603-61-3

ISSN

1314-2704

e-ISSN

1314-2704

Počet stran výsledku

7

Strana od-do

321-327

Název nakladatele

STEF92 Technology Ltd.

Místo vydání

Sofia

Místo konání akce

Albena

Datum konání akce

4. 7. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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