Lightweight repair plasters: Evaluation of the resistance against NaCl crystallization

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F23%3A00367785" target="_blank" >RIV/68407700:21110/23:00367785 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1063/5.0162275" target="_blank" >https://doi.org/10.1063/5.0162275</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0162275" target="_blank" >10.1063/5.0162275</a>

Result language

angličtina

Original language name

Lightweight repair plasters: Evaluation of the resistance against NaCl crystallization

Original language description

The service life of repair plasters is affected by many factors. Salt crystallization is one of the most important, especially in case of plasters intended for repair of salt laden masonry. To predict the durability of plasters, the accelerated laboratory salt crystallization tests are usually used. However, there is still no standard commonly accepted methodology for evaluating the durability of plasters with regard to salt damage. In this paper, the investigation of sodium chloride (NaCl) crystallization in three lightweight repair plasters is presented. Plasters were subjected to an accelerated laboratory salt crystallization test, which consisted of cyclic drying and wetting with using of NaCl solution. Studied materials were two cement-lime plasters and one gypsum-lime plaster, all lightened by the addition of expanded perlite in order to enhance their thermal insulation parameters. The characterization of plasters before drying-wetting cycles included measurement of specific density, bulk density, total open porosity, compressive strength, flexural strength, and dynamic modulus of elasticity. The evaluation of salt crystallization resistance was determined by means of scanning electron microscopy (SEM) investigation and compressive strength ratio before and after salt crystallization test. Based on the results obtained, the developed plasters can be recommended for use as a material in the repair of the salt laden masonry.

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

2023

Confidentiality

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

Article name in the collection

International Conference of Numerical Analysis and Applied Mathematics ICNAAM 2021

ISBN

978-0-7354-4589-5

ISSN

0094-243X

e-ISSN

1551-7616

Number of pages

4

Pages from-to

"130005-1"-"130005-4"

Publisher name

AIP Publishing

Place of publication

Melville, NY

Event location

Rodos

Event date

Sep 20, 2021

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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