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Concentration monitoring and performance of a migratory corrosion inhibitor in steel-reinforced concrete
journal contribution
posted on 2004-01-01, 00:00 authored by L Holloway, K Nairn, Maria ForsythMaria ForsythInhibitor concentration depth profiles for concrete samples treated with a proprietary migratory corrosion inhibitor (of the Cortec MCI range) are presented. The treated concrete was cored and these cores were then sectioned and crushed before being immersed in distilled water to extract the available inhibitor. The amine concentrations were quantified using an ammonium-sensing electrode and were then related to the inhibitor concentration present. The inhibitor examined, reported to contain a combination of volatile amines and amino carboxylate compounds, was found to readily diffuse through concrete. The inhibitor was subjected to a 5-year trial and found to be effective in suppressing corrosion of steel reinforcement in the presence of high chloride concentrations. The concentration profiles indicate that only relatively low concentrations of inhibitor were required to achieve inhibition in this case.
History
Journal
Cement and Concrete ResearchVolume
34Issue
8Pagination
1435 - 1440Publisher
ElsevierLocation
Amsterdam, The NetherlandsPublisher DOI
ISSN
0008-8846eISSN
1873-3948Language
engPublication classification
C1.1 Refereed article in a scholarly journalCopyright notice
2004, Elsevier Ltd.Usage metrics
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