Concentration monitoring and performance of a migratory corrosion inhibitor in steel-reinforced concrete

Holloway, L., Nairn, K. and Forsyth, M. 2004, Concentration monitoring and performance of a migratory corrosion inhibitor in steel-reinforced concrete, Cement and Concrete Research, vol. 34, no. 8, pp. 1435-1440.

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Title Concentration monitoring and performance of a migratory corrosion inhibitor in steel-reinforced concrete
Author(s) Holloway, L.
Nairn, K.
Forsyth, M.
Journal name Cement and Concrete Research
Volume number 34
Issue number 8
Start page 1435
End page 1440
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2004
ISSN 0008-8846
1873-3948
Keyword(s) corrosion inhibitors
concrete
corrosion
diffusion
electrochemical properties
Summary Inhibitor 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.
Language eng
Field of Research 039999 Chemical Sciences not elsewhere classified
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2004, Elsevier Ltd.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30030166

Document type: Journal Article
Collection: Institute for Technology Research and Innovation
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