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Title: Towards rendering steel reinforced concrete immune to corrosion
Authors: Christodoulou, Christian
Glass, Gareth K.
Keywords: Steel
Electrochemical protection
Galvanic protection
Issue Date: 2012
Publisher: Australasian Corrosion Association Inc.
Citation: CHRISTODOULOU, C. and GLASS, G., 2012. Towards rendering steel reinforced concrete immune to corrosion. Australasian Corrosion Association 2012 Annual Meeting, Melbourne, Australia, 11-14 November, paper 159, 11pp.
Abstract: This work reviews developments in the understanding of chloride induced corrosion of steel in concrete from both a kinetic and thermodynamic perspective. Corrosion damage is at least in part attributed to the production of acid at sites of corrosion initiation. Solid phase inhibitors provide a reservoir of hydroxyl ions to inhibit damage. Pit re-alkalisation is identified as an important protective effect in electrochemical treatments used to arrest corrosion. A process like pit re-alkalisation is achieved more easily by impressing current off sacrificial anodes using a power supply and may then be followed by low maintenance galvanic protection to prevent local acidification. Methods of monitoring the steel corrosion rate in electrochemically treated concrete have been developed and used to assess corrosion risk. Some of these concepts have been adopted in the recent international standard on cathodic protection, ISO 12696:2012. This work also considers some of the amendments to this standard.
Description: This is a conference paper.
Version: Published
URI: https://dspace.lboro.ac.uk/2134/11587
Publisher Link: http://www.corrosion.com.au/
Appears in Collections:Conference Papers (CICE)

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