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2.1 CIVIL ENGINEERING
This paper presents developments in the use of an embedded, multi-electrode conductivity sensor to study the response of the concrete cover-zone to environmental action. The sensor enables an evaluation of the temporal and spatial variation of electrical conductivity thereby allowing an integrated assessment of the cover-zone. Conductivity sensors were embedded within concrete samples to study the cover-zone response to cyclic wetting and drying under laboratory conditions. This work was extended to include the use of remote interrogation methods to study samples placed at a marine exposure site and preliminary results are presented.
McCarter, W., Chrisp, T., Starrs, G., Owens, E., Holmes, N., Basheer, L., Nanukuttan, S., Basheer, M.: Conductivity Sensors to Monitor Cover-Zone Performance. Concrete in Aggressive Aqueous Environments. Toulouse, France, 2009.