ELECTROCHEMICAL INJECTION OF NANOPARTICLES INTO CONCRETE

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F16%3A43902883" target="_blank" >RIV/60461373:22310/16:43902883 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21110/16:00301622
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
ELECTROCHEMICAL INJECTION OF NANOPARTICLES INTO CONCRETE
Original language description
In this contribution, the possibility of nanoparticle injection by electromigration, as a novel approach for concrete repair, is presented. The electromigration was employed to inject nanosilica particles and an organosiliconate into normal Portland cement concrete. Several different concentrations of solutions were tested. Incorporation of nanosilica to inner pore system and the effect on the densification were studied by means of SEM-EDS and accelerated chloride penetration tests on treated and control samples. It was found that nanosilica can penetrate a few millimeter zone in a reasonable time and further block chloride penetration. The effect is higher if a higher concentration of nanoparticles is used. Large decrease in chloride concentration in outer parts of concrete later exposed to accelerated chloride penetration test was achieved on samples treated with both nanosilica and organosiliconate solution. Several issues still remain open like particles agglomeration or the change in the subsequent chloride profile in the sample compared to natural diffusion or accelerated migration.
Czech name
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Czech description
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Project
<a href="/en/project/GA16-11879S" target="_blank" >GA16-11879S: Rehabilitation of Reinforced Concrete Structures by Simultaneous Chloride Removal and Nanoparticle Injection</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
International RILEM Conference Materials Systems and Structures in Civil Engineering 2016 (MSSCE 2016) on Electrochemistry in Civil Engineering
ISBN
978-2-35158-176-6
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
81-87
Publisher name
RILEM Publications S.A.R.L.
Place of publication
Bagneux
Event location
Lyngby
Event date
Aug 22, 2016
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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