Electrochemical injection of corrosion inhibitors and chloride extraction for protection of steel reinforcement
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F19%3A43919491" target="_blank" >RIV/60461373:22310/19:43919491 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Electrochemical injection of corrosion inhibitors and chloride extraction for protection of steel reinforcement
Original language description
Electrochemical chloride extraction from a reinforced concrete structure may be accompanied with an electrochemical injection of healing agents if such agents are positively charged and are able migrate towards the activated reinforcement. Positive charge carrying nanoparticles or cationic corrosion inhibitors might be the proper choice. Organic substances with a positive charge and their salts are mostly such inhibitors. Critical concentration of chlorides was investigated for fresh and carbonated concrete pore solution. Corrosion inhibition efficiency was evaluated by means of polarization resistance as a measure of corrosion rate. Sodium nitrite was taken as a reference corrosion inhibitor. Migration tests were performed in order to test the migration ability of promising cation corrosion inhibitors, namely guanidine carbonate, tetrabutylammonium bromide, tetrabutylphosphonium bromide or triethylenetetraammine. Concentration profile of the inhibitors and chlorides was investigated in the testing concrete blocks. The best results have been obtained for guanidine carbonate and triethylenetetraammine. Both showed reasonable corrosion inhibition efficiency, the migration ability was performed only by guanidine
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
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)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
NACE - International Corrosion Conference Series
ISBN
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ISSN
0361-4409
e-ISSN
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Number of pages
14
Pages from-to
14
Publisher name
National Assoc. of Corrosion Engineers International
Place of publication
Nashville
Event location
Nashville
Event date
Mar 24, 2019
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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