Thermal Insulation Repair Lime Plaster with Perlite - Functional Parameters and Salt Crystallization Resistance

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F22%3A00363830" target="_blank" >RIV/68407700:21110/22:00363830 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.5593/sgem2022/6.1/s26.27" target="_blank" >https://doi.org/10.5593/sgem2022/6.1/s26.27</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5593/sgem2022/6.1/s26.27" target="_blank" >10.5593/sgem2022/6.1/s26.27</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermal Insulation Repair Lime Plaster with Perlite - Functional Parameters and Salt Crystallization Resistance

Popis výsledku v původním jazyce

The aim of the presented work was to develop and evaluate the novel thermal insulation plaster intended for repair and renovation application. The thermal parameters of the reference lime plaster were enhanced with the substitution of 50 vol. % of silica sand with expanded perlite. The hardened plasters were characterized by their specific density, bulk density, total open porosity, compressive strength, flexural strength, and dynamic modulus of elasticity. The thermal conductivity and the volumetric heat capacity were investigated as well. As the studied plasters should find use in repair of salt-laden masonry, the specific attention was paid to the assessment of their durability in terms of resistance to salt damage. Plasters were subjected to the accelerated laboratory salt crystallization test that consisted of ten wetting/drying cycles, where the used salt was sodium chloride. For comparison, the same process was performed with distilled water. The salt crystallization resistance was evaluated using the photographical observations and the measurement of the residual compressive strength. The results obtained showed that the use of expanded perlite allows the development of the lightweight repair plaster with sufficient mechanical parameters and improved thermal insulation properties. Moreover, the high porosity of lime-perlite plaster has contributed to its great durability against salt crystallization.

Název v anglickém jazyce

Thermal Insulation Repair Lime Plaster with Perlite - Functional Parameters and Salt Crystallization Resistance

Popis výsledku anglicky

The aim of the presented work was to develop and evaluate the novel thermal insulation plaster intended for repair and renovation application. The thermal parameters of the reference lime plaster were enhanced with the substitution of 50 vol. % of silica sand with expanded perlite. The hardened plasters were characterized by their specific density, bulk density, total open porosity, compressive strength, flexural strength, and dynamic modulus of elasticity. The thermal conductivity and the volumetric heat capacity were investigated as well. As the studied plasters should find use in repair of salt-laden masonry, the specific attention was paid to the assessment of their durability in terms of resistance to salt damage. Plasters were subjected to the accelerated laboratory salt crystallization test that consisted of ten wetting/drying cycles, where the used salt was sodium chloride. For comparison, the same process was performed with distilled water. The salt crystallization resistance was evaluated using the photographical observations and the measurement of the residual compressive strength. The results obtained showed that the use of expanded perlite allows the development of the lightweight repair plaster with sufficient mechanical parameters and improved thermal insulation properties. Moreover, the high porosity of lime-perlite plaster has contributed to its great durability against salt crystallization.

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

2022

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of 22nd International Multidisciplinary Scientific GeoConference SGEM 2022

ISBN

—

ISSN

1314-2704

e-ISSN

—

Počet stran výsledku

8

Strana od-do

209-216

Název nakladatele

STEF92 Technology Ltd.

Místo vydání

Sofia

Místo konání akce

Albena

Datum konání akce

2. 7. 2022

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—