Problems connected with use of hot-dip galvanized reinforcement in concrete elements

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21610%2F17%3A00315785" target="_blank" >RIV/68407700:21610/17:00315785 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.proeng.2017.02.086" target="_blank" >http://dx.doi.org/10.1016/j.proeng.2017.02.086</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.proeng.2017.02.086" target="_blank" >10.1016/j.proeng.2017.02.086</a>

Result language
angličtina
Original language name
Problems connected with use of hot-dip galvanized reinforcement in concrete elements
Original language description
The goal of this article is to evaluate risks arising from using hot-dip galvanized reinforcement in concrete elements. The article provides detailed summary of current experimental activities but also earlier positive remarks about applicability of hot-dip galvanized reinforcement, mainly from the perspective of corrosion and bond strength with concrete. Based on previously obtained data, the article disproves barrier effect of zinc coating on base steel. The reason is the initial corrosion reaction of zinc coating in fresh concrete producing hydrogen. Further data prove that forming hydrogen irreversibly increases porosity of cement on reinforcement/concrete interface which can significantly reduce bond strength. Sufficient filling of pores by zinc corrosion product could not be confirmed.
Czech name
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Czech description
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Project
<a href="/en/project/GA14-20856S" target="_blank" >GA14-20856S: The kinetics of corrosion processes and corrosion media transport in advanced ultra-high performance concretes (UHPC)</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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