corrosion assessment of reinforced concrete using different steel grades with or without epoxy-coating
P. Damle,
Published in International Journal of Advanced Research in Civil,Structural,Environmental and Infrastructure Engineering and Developing
ISSN: 2320-723X Impact Factor:1.7 Volume:2 Issue:1 Year: 08 May,2014 Pages:42-48
Abstract
Corrosion in reinforced concrete occurs either because of ingression of chloride ions onto the embedded steel or because of carbonation which leads to reduction in alkaline environment at the level of the embedded steel. Often, the two processes complement each other and initiate corrosion. The money spent on the repair of corroded reinforced structures amounts to hundreds of millions worldwide. This research aims at detection of corrosion in RC samples using electrochemical techniques employed in the past. The principle used is that the probability of corrosion is the function of the potential difference measured between the reinforcement and the surface of concrete. The samples are subjected to accelerated corrosion using impressed current technique to cause corrosion to an extent that would occur in several decades. Also in this research, it is intended to apply this technique for on-field detection of corrosion so as to plan the repairing procedure effectively.
Kewords
corrosion, half-cell potential, impressed current, epoxy
Reference
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