Electrokinetic desalination of protruded areas of stone avoiding the direct contact with electrodes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F17%3APU136737" target="_blank" >RIV/00216305:26110/17:PU136737 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1617/s11527-016-0946-x" target="_blank" >https://link.springer.com/article/10.1617/s11527-016-0946-x</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1617/s11527-016-0946-x" target="_blank" >10.1617/s11527-016-0946-x</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Electrokinetic desalination of protruded areas of stone avoiding the direct contact with electrodes

Popis výsledku v původním jazyce

Soluble salts are considered one of the main deterioration factors of porous building materials such as rocks, bricks or granites. The desalination treatments currently used in order to mitigate this alteration process are usually applied directly on the affected areas, which have often a low degree of cohesion precisely due to the deteriorating effect of the salts. The present study aimed to investigate the evaluation of a new approach based on electrokinetic techniques to desalinate rocks in monuments, specifically to desalinate carved reliefs. The procedure avoids the direct contact with the areas highly affected by salts, which usually show loss of cohesion due to salt crystallization processes, by placing the electrodes on adjacent areas less contaminated with salts. This fact represents another difficulty in the desalination process because the electric field must be adapted to the shape of the sculptural motif. An ashlar of sandstone highly contaminated with salts in a protruded area located in its central part was used for this purpose. The results showed that the electrokinetic setup proposed allowed to achieve high percentages of salt content reduction ( above 80 %) in the protruded area of the sandstone highly contaminated with salts. Therefore, these results confirmed that it was possible to desalinate the sandstone using electrokinetic methods without the need to put in contact the affected areas with the equipment, reducing the possibility of altering it by manipulation.

Název v anglickém jazyce

Electrokinetic desalination of protruded areas of stone avoiding the direct contact with electrodes

Popis výsledku anglicky

Soluble salts are considered one of the main deterioration factors of porous building materials such as rocks, bricks or granites. The desalination treatments currently used in order to mitigate this alteration process are usually applied directly on the affected areas, which have often a low degree of cohesion precisely due to the deteriorating effect of the salts. The present study aimed to investigate the evaluation of a new approach based on electrokinetic techniques to desalinate rocks in monuments, specifically to desalinate carved reliefs. The procedure avoids the direct contact with the areas highly affected by salts, which usually show loss of cohesion due to salt crystallization processes, by placing the electrodes on adjacent areas less contaminated with salts. This fact represents another difficulty in the desalination process because the electric field must be adapted to the shape of the sculptural motif. An ashlar of sandstone highly contaminated with salts in a protruded area located in its central part was used for this purpose. The results showed that the electrokinetic setup proposed allowed to achieve high percentages of salt content reduction ( above 80 %) in the protruded area of the sandstone highly contaminated with salts. Therefore, these results confirmed that it was possible to desalinate the sandstone using electrokinetic methods without the need to put in contact the affected areas with the equipment, reducing the possibility of altering it by manipulation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Materials and Structures

ISSN

1359-5997

e-ISSN

1871-6873

Svazek periodika

50

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

15

Strana od-do

1-15

Kód UT WoS článku

000385022400082

EID výsledku v databázi Scopus

2-s2.0-84990234851