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The electrochemical behaviour of steel reinforcements in Na2CO3 and NaHCO3 solutions in relation to stress corrosion cracking

AuthorsAlonso, C.; Andrade, C.
Issue Date1989
CitationCorrosion Science; Vol. 29; nº 9; págs. 1129-1139; (1989)
AbstractElectrochemical tests on prestressing and corrugated reinforcing steel immersed in Na2CO3 and NaHCO3 solutions were carried out to examine the corrosion behaviour of rebars in media designed to simulate the composition of the electrolyte occluded in carbonated concrete pores. Polarization resistance measurements provided not only the rate at which rebars corrode, but also defined a critical concentration (0.1 M for HCO3 and 0.01 for CO32−) which separates steel activity from passivity. Polarization curves were used to identify the range of potential where active-passive phenomena coexist.
Publisher version (URL)http://www.sciencedirect.com/science/article/pii/0010938X89900498
Appears in Collections:(CISDEM) Artículos
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