Influence of surface conditions, inhibitor on the chloride threshold level for corrosion of steel in a simulated concrete pore solution

Title: Influence of surface conditions, inhibitor on the chloride threshold level for corrosion of steel in a simulated concrete pore solution
Author(s): J. Xu, L. Jiang
Paper category : conference
Book title: International Conference on Microstructure Related Durability of Cementitious Composites
Editor(s): W. Sun, K. van Breugel, C. Miao, G. Ye and H. Chen
Print-ISBN: 978-2-35158-065-3
e-ISBN: 978-2-35158-084-4
Publisher: RILEM Publications
Publication year: 2008
Pages: 609 - 617
Total Pages: 9
Nb references: 13
Language: English

Abstract: The aim of this study is to evaluate the influence of steel surface conditions and an organic inhibitor on the chloride threshold level for corrosion of steel in a concrete contaminated by chlorides. The corrosion of steel with two different surface conditions, i.e. a mill scale and polishing treatment, has been simulated in a saturated Ca(OH)2 solution containing different chloride concentration. N,N'-dimethylaminoethanol (DMEA) has been applied as an amino-alcohol based inhibitor. The results concluded by electrochemical impedance spectra (EIS) indicate that, contrasted to the steel with a mill scale, the polishing steel has an increasing chloride threshold value. However, the addition of the inhibitor exhibits little effect on the chloride threshold level for the steel corrosion in the saturated Ca(OH)2 solution, although it is effective to reduce the corrosion rate of the steel.

Online publication: 2009-06-09
Publication type : full_text
Public price (Euros): 0.00