Influence of resistivity on current and potential distribution of cathodic protection systems for steel framed masonry structures

LAMBERT, P., MANGAT, P. S., O'FLAHERTY, F. J. and WU, Y. Y. (2008). Influence of resistivity on current and potential distribution of cathodic protection systems for steel framed masonry structures. Corrosion engineering science and technology, 43 (1), 16-22.

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Link to published version:: 10.1179/174327807X214897

Abstract

The present paper presents the influence of resistivity on the current and potential distribution of cathodic protection (CP) systems for steel framed masonry structures. The work involves both experimental measurements and boundary element analysis and follows on from earlier experiments employing sand as a simple model for masonry encasement that has been reported elsewhere. Factors such as the size and type of masonry, moisture content and width of mortar joints will affect the resistance of the path through which the CP currents pass and thereby influence the distribution onto the steel surface. To represent such variations in resistance, it has been necessary to construct a small scale specimen replicating, as far as possible, actual applications on steel framed structures. The results from the laboratory specimen and numerical modelling are in sufficient agreement to confirm the validity of the modelling approach and allow the results to be employed for the purposes of design and development.

Item Type: Article
Research Institute, Centre or Group: Materials and Engineering Research Institute > Structural Materials and Integrity Research Centre > Centre for Infrastructure Management
Identification Number: 10.1179/174327807X214897
Depositing User: Ann Betterton
Date Deposited: 05 Feb 2010 16:12
Last Modified: 07 Oct 2010 09:49
URI: http://shura.shu.ac.uk/id/eprint/1039

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