Nanoparticle Injection into Concrete Using Electromigration

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F14%3A00222285" target="_blank" >RIV/68407700:21110/14:00222285 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.4028/www.scientific.net/AMR.1054.6" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/AMR.1054.6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/AMR.1054.6" target="_blank" >10.4028/www.scientific.net/AMR.1054.6</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Nanoparticle Injection into Concrete Using Electromigration

Popis výsledku v původním jazyce

This paper aims at investigation of possibilities and effectiveness of chloride extraction from concrete and nanoparticle injection into existing reinforced concrete structures by means of electromigration technique. Concrete specimens are exposed to accelerated chloride penetration tests in order to simulate a natural chloride exposure. The developed chloride profile is removed by electroextraction by reversing the polarity in the testing chamber. In a similar manner, concrete specimens are injected with different concentrations of colloidal nanosilica particles. It was shown in the paper that chlorides can be effectively extracted from the concrete using small voltage lasting for several days. Higher concentration solutions of nanosilica can also beeffectively transported into concrete via the electric field. Once injected nanosilica can act as microstructure densifier and further reduce chloride penetration as demonstrated by decreased diffusivity of the treated concrete.

Název v anglickém jazyce

Nanoparticle Injection into Concrete Using Electromigration

Popis výsledku anglicky

This paper aims at investigation of possibilities and effectiveness of chloride extraction from concrete and nanoparticle injection into existing reinforced concrete structures by means of electromigration technique. Concrete specimens are exposed to accelerated chloride penetration tests in order to simulate a natural chloride exposure. The developed chloride profile is removed by electroextraction by reversing the polarity in the testing chamber. In a similar manner, concrete specimens are injected with different concentrations of colloidal nanosilica particles. It was shown in the paper that chlorides can be effectively extracted from the concrete using small voltage lasting for several days. Higher concentration solutions of nanosilica can also beeffectively transported into concrete via the electric field. Once injected nanosilica can act as microstructure densifier and further reduce chloride penetration as demonstrated by decreased diffusivity of the treated concrete.

Druh

D - Stať ve sborníku

CEP obor

JN - Stavebnictví

OECD FORD obor

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Projekt

<a href="/cs/project/GA14-19561S" target="_blank" >GA14-19561S: Cementové kompozity v náročných podmínkách prostředí</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název statě ve sborníku

Special Concrete and Composites 2014

ISBN

978-3-03835-317-1

ISSN

1022-6680

e-ISSN

—

Počet stran výsledku

5

Strana od-do

6-10

Název nakladatele

Trans Tech Publications

Místo vydání

Uetikon-Zurich

Místo konání akce

Skalský Dvůr

Datum konání akce

16. 10. 2014

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

000348436200002