Abstract

We present the summary of several years of research about the inhibitor effect of on the corrosion of reinforcements. We have studied their inhibitor effect using galvanostatic and potentiodynamic polarization curves and we have measured the corrosion rates using the Polarization Resistance method (linear polarization). We have verified by this last technique, Rp, that the in concrete, if they are used in sufficient proportion, are a complete inhibitor when the Cl are added during the mixing (e.g. mixing whith sea water, as an accelerator in inbitor). Inssufficient amounts of have never provoked more corrosion in our experiments in concrete. The presence of always have produced a beneficial effect. The are also beneficial in carbonated concrete, suppressing or, at least, reducing the attacked area and the corrosion rate of the reinforcements.

Resumen

Se presenta el resumen de varios años de investigación sobre el efecto inhibidor de los en la corrosión de las armaduras. Se ha estudiado su efecto inhibidor mediante el trazado de curvas potenciodinámicas y galvanostáticas y se han medido velocidades de corrosión intantánea usando el método de Resistencia de Polarización. Se ha podido comprobar mediante esta última técnica que, cuando hay Cl presentes desde el momento del amasado, los inhiben completamente el ataque si se añaden en cantidad suficiente. Cantidades insuficientes de nunca han provocado mayores ataques en nuestros ensayos, sino que siempre han reducido el área corroída o la intensidad del ataque. Los son también efectivos en hormigón carbonatado donde, al menos, siempre reducen el ataque cuando no lo inhiben por completo

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Published on 01/01/1984

Licence: CC BY-NC-SA license

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