The effect of the sodium sulphate solution exposure on properties and mechanical resistance of different kinds of renders

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F18%3A43916061" target="_blank" >RIV/60461373:22310/18:43916061 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68145535:_____/18:00494096

Výsledek na webu

<a href="https://www.irsm.cas.cz/materialy/cs_content/2018_doi/Pavlikova_CS_2018_0027.pdf" target="_blank" >https://www.irsm.cas.cz/materialy/cs_content/2018_doi/Pavlikova_CS_2018_0027.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.13168/cs.2018.0027" target="_blank" >10.13168/cs.2018.0027</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The effect of the sodium sulphate solution exposure on properties and mechanical resistance of different kinds of renders

Popis výsledku v původním jazyce

The effect of 5 % water solution of the sodium sulphate and the reference environment of distilled water on changes in mechanical resistance of the commercial dry render mixes was researched in the paper. The prism-shaped specimens cured 28 days in humid and stable conditions were immersed in water or sodium sulphate water solution. At chosen time, the particular specimens were collected, dried to constant mass, and subjected to tests. The maximum time of specimen exposure to moisture or salt action was 168 days. Within the performed experiments, length changes, mass gain, mechanical and basic properties were measured in order to reveal the effect of sulphate corrosion on researched materials. Additionally, pore size distribution measurement and X-Ray CT analysis for the most damaged render were done, in order to characterize the disruptive impact of sulphate solution on porous microstructure of lime-metakaolin-based render. The obtained data revealed the high capacity of porous space of the tested renders for salt storage. For shorter times of exposure to salt action, most of the studied renders exhibited improvement in mechanical resistance. On the other hand, after the full filling of the porous space, the evoked crystallization pressures led to the decrease in mechanical resistance and materials damage. However, one type of studied renders originally designed for restoration of salt laden masonry maintained its excellent mechanical properties even after 168 days of sulphate exposure. © 2018 Institute of Chemical Technology. All rights reserved.

Název v anglickém jazyce

The effect of the sodium sulphate solution exposure on properties and mechanical resistance of different kinds of renders

Popis výsledku anglicky

The effect of 5 % water solution of the sodium sulphate and the reference environment of distilled water on changes in mechanical resistance of the commercial dry render mixes was researched in the paper. The prism-shaped specimens cured 28 days in humid and stable conditions were immersed in water or sodium sulphate water solution. At chosen time, the particular specimens were collected, dried to constant mass, and subjected to tests. The maximum time of specimen exposure to moisture or salt action was 168 days. Within the performed experiments, length changes, mass gain, mechanical and basic properties were measured in order to reveal the effect of sulphate corrosion on researched materials. Additionally, pore size distribution measurement and X-Ray CT analysis for the most damaged render were done, in order to characterize the disruptive impact of sulphate solution on porous microstructure of lime-metakaolin-based render. The obtained data revealed the high capacity of porous space of the tested renders for salt storage. For shorter times of exposure to salt action, most of the studied renders exhibited improvement in mechanical resistance. On the other hand, after the full filling of the porous space, the evoked crystallization pressures led to the decrease in mechanical resistance and materials damage. However, one type of studied renders originally designed for restoration of salt laden masonry maintained its excellent mechanical properties even after 168 days of sulphate exposure. © 2018 Institute of Chemical Technology. All rights reserved.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Ceramics-Silikáty

ISSN

0862-5468

e-ISSN

—

Svazek periodika

62

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

14

Strana od-do

311-324

Kód UT WoS článku

000455110000001

EID výsledku v databázi Scopus

2-s2.0-85056587202