Some Electrochemical Aspects of Corrosion of Steel in Concrete

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Abstract
Because of the variation in composition and steel surface conditions in steel-reinforced concrete samples immersed in sodium chloride solutions, Mcorr is a better indicator of corrosive behavior than the time of exposure. While it is true that for many samples, the longer the exposure time, the greater the probability of corrosion-product buildup, the corrosive behavior of individual samples selected on the basis of exposure time may give misleading results insofar as the mechanism by which steel goes from the passive to active state is concerned. Therefore, the value of Mcorr, when measured under the same conditions, is much more reflective of the corrosive behavior than the time of exposure to sodium chloride solutions.

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