Influence of N,N′‐dimethylaminoethanol as an inhibitor on the chloride threshold level for corrosion of steel reinforcement |
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| Authors: | J Xu L Jiang F Xing |
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| Affiliation: | 1. Department of Materials Science and Engineering, Hohai University, Nanjing 210098 (P.R. China);2. Shenzhen Durability Center for Civil Engineering, Shenzhen University, Shenzhen 518060 (P.R. China) |
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| Abstract: | The aim of this study is to examine the influence of N,N′‐dimethylaminoethanol (DMEA) as an inhibitor on the chloride threshold level for corrosion of steel in a concrete contaminated by chlorides. The experiment has been carried out in a saturated Ca(OH)2 solution and chloride contaminated concrete containing different chloride and DMEA level. The critical point of corrosion onset is concluded by combining the open‐circuit potential (Ecorr) with corrosion current (Icorr), which is decided by electrochemical impedance spectra (EIS) in the solution. Besides, the EIS has also been applied to determinate the chloride threshold level in the chloride contaminated concrete. It has been found that the presence of DMEA represented as an amino‐alcohol inhibitor, exerts little influence on the chloride threshold level for corrosion of steel in the solution. Similarly, the effect of the DMEA on the chloride threshold level in the chloride contaminated concrete, is also negligible. |
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| Keywords: | chloride threshold level concrete inhibitor N N′ ‐dimethylaminoethanol steel reinforcement |
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