In the present work is described the effect of the characteristics of the galvanized coating on corrosion rate of reinforcing bars embedded in a concrete without additives and in another with in terms of cement weight. To this end, the following materials were subjected to the action of a moisture saturated atmosphere for a period of days: an annealed-galvanized coating; another one obtained by dipping in a molten Zn bath with Al and some others produced at and Failed to parse (syntax error): 430°C
in an ordinary bath.
The attack evolution vs time was controlled by measuring the polarization resistance. The electrochemical determinations were gravimetrically verified and supplemented by a metallographic examination of tests coatings.
In the absence of chlorides, the attack is fully tolerated. Chlorides radically change the corrosion behaviour of galvanized steel and increase the attack by a factor of in the most favourable case, but in these conditions, coatings with thick, homogeneous layer outperform the usual ones, and specially the annealed ones.
Published on 01/01/1984
DOI: 10.1007/BF02473980
Licence: CC BY-NC-SA license
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