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07301 MIGRATING CORROSION INHIBITORS FOR REINFORCED CONCRETE STRUCTURES

Picture for 07301 MIGRATING CORROSION INHIBITORS FOR REINFORCED CONCRETE STRUCTURES
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The effectiveness of organic commercial migrating inhibitors on steel reinforcements corrosion. Four series of concrete specimens were cast. Two organic migrating inhibitors were applied. Free corrosion potential and corrosion rate of steel rebar were periodically monitored for five years.  Results show that migrating inhibitors are not effective in reducing corrosion rate.

Product Number: 51300-07301-SG
ISBN: 07301 2007 CP
Author: M. Ormellese, F. Bolzoni, E.R. Perez, and S. Goidanich
Publication Date: 2007
Industries: Chemical Inhibitors , Corrosion Monitoring and Control
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The results presented in this paper concern the effectiveness of organic commercial migrating inhibitors on steel reinforcements corrosion. Four series of concrete specimens were cast to verify inhibitor ability to delay, reduce or stop corrosion, both on chlorides contaminated concrete (adding chlorides in the mixture, or penetrating the concrete) and in carbonated concrete. Two organic migrating inhibitors (amine and alkanolamines based) were applied on the surface of concrete following the manufacturers’ recommendations. Free corrosion potential and corrosion rate of steel rebar were periodically monitored for five years. Results show that migrating inhibitors are not effective in reducing corrosion rate, both in chlorides and carbonation induced corrosion, while a certain effect was observed on the delay of corrosion initiation in the case of chlorides penetration.

Keywords: concrete, migrating inhibitors, chloride induced corrosion, carbonation

 

The results presented in this paper concern the effectiveness of organic commercial migrating inhibitors on steel reinforcements corrosion. Four series of concrete specimens were cast to verify inhibitor ability to delay, reduce or stop corrosion, both on chlorides contaminated concrete (adding chlorides in the mixture, or penetrating the concrete) and in carbonated concrete. Two organic migrating inhibitors (amine and alkanolamines based) were applied on the surface of concrete following the manufacturers’ recommendations. Free corrosion potential and corrosion rate of steel rebar were periodically monitored for five years. Results show that migrating inhibitors are not effective in reducing corrosion rate, both in chlorides and carbonation induced corrosion, while a certain effect was observed on the delay of corrosion initiation in the case of chlorides penetration.

Keywords: concrete, migrating inhibitors, chloride induced corrosion, carbonation

 

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