The Effect of Addition Potassium Permanganate on Bond Strength of Hot-Dip Galvanized Plain Bars with Cement Paste

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21610%2F23%3A00369179" target="_blank" >RIV/68407700:21610/23:00369179 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.3390/ma16072556" target="_blank" >https://doi.org/10.3390/ma16072556</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/ma16072556" target="_blank" >10.3390/ma16072556</a>

Result language
angličtina
Original language name
The Effect of Addition Potassium Permanganate on Bond Strength of Hot-Dip Galvanized Plain Bars with Cement Paste
Original language description
In this paper, the effect of gradually increasing amounts of KMnO4 (10(-4), 10(-3), 10(-2) mol(L-1)) in cement paste on the bond strength of a plain hot-dip galvanized steel bar was evaluated. The opencircuit potential of HDG samples in cement paste with various additions ofMnO(4) was monitored in order to follow a transfer of zinc from activity to passivity. Furthermore, the influence of the addition of these anions on the physicochemical properties of normal-strength concrete or cement paste was evaluated by means of hydration heat measurements, X-ray diffraction analysis, and compressive strength. The effective concentration of MnO4 anions prevents the corrosion of the coating with hydrogen evolution and ensures that the bond strength is not reduced by their action, which was determined to be 10(-3) mol L-1. Lower additions ofMnO(4) anions (10(-4) mol L-1) are ineffective in this respect. On the other hand, higher additions ofMnO(4) anions (10(-2) mol L-1), although they ensure the corrosion of the coating in fresh concrete without hydrogen evolution, but affect the hydration process of the cement paste that was demonstrated by slight water separation.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20102 - Construction engineering, Municipal and structural engineering

Project
<a href="/en/project/GA20-24234S" target="_blank" >GA20-24234S: New generation of ecological anti-corrosion coatings conventional concrete reinforcement based on functional nanodisperse organosilanes</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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