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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

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

20101 - Civil engineering

Project

<a href="/en/project/GA21-06582S" target="_blank" >GA21-06582S: Experimental and computational analysis of salt transport, accumulation, and crystallization in non-hydrophobized rendering mortars</a><br>

Continuities

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

Publication year

2022

Confidentiality

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

Article name in the collection

Proceedings of 22nd International Multidisciplinary Scientific GeoConference SGEM 2022

ISBN

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ISSN

1314-2704

e-ISSN

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Number of pages

8

Pages from-to

209-216

Publisher name

STEF92 Technology Ltd.

Place of publication

Sofia

Event location

Albena

Event date

Jul 2, 2022

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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