Corrosion of galvanized steel in concrete environment and its impact on cement paste microstructure

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F04%3APU46730" target="_blank" >RIV/00216305:26110/04:PU46730 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Corrosion of galvanized steel in concrete environment and its impact on cement paste microstructure
Original language description
Corrosion process of galvanized steel in model pore solution of pH 12.5 or 13.5 was studied by means of electrochemical corrosion methods. Saturated solution of Ca(OH)2 causes active corrosion of galvanized steel accompanied with evolution of hydrogen gas. Corrosion resistance of galvanized steel particularly in environment of pH 13.5 is very weak. The microstructure of the interfacial transition zone between hardened Portland cement paste and zinc surface was examined by using porosimetry and SEM methoods. The porosity increases in the range of pores at approx. 10 ?Ým. Cr(III) as well as Cr(VI) based conversion coating reduces the gas evolution in solution of pH 12.5, while in pH 13.5 solution only the Cr(VI) coating is effective.
Czech name
Koroze galvanizované výztuže v betonu a její vliv na mikrostrukturu cementového tmelu.
Czech description
V článku je popsáno chování pozinkované výztuže v betonu a vliv zinku na strukturu a vlastnosti okolního cementového tmelu.

Project
<a href="/en/project/GA103%2F02%2F0282" target="_blank" >GA103/02/0282: Corrosion of alternative metallic materials for reinforcement in concrete</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2004
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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