A comparison between uniform and galvanic corrosion rate in carbonation induced corrosion of reinforced concrete

Carbonation-induced corrosion is usually considered in uniform or generalized corrosion. This true for small laboratory samples but not necessary the case real reinforced concrete structures built with multilayers reinforcement. Multi-layers reinforcement could lead to a galvanic between first de-passivated layer closed surface and deeper layers still passivated. The present paper compares density made two different type of cements. CEM III cement despite their higher susceptibility carbonation show significant lower density, which would increase service life RC structures, exposed carbonation.