Application of the conductivity sensor as a chloride detector in concrete

P.R. Spiesz, H.J.H. Brouwers

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

Concrete structures being exposed to chloride bearing solutions such as seawater or de-icing salts brine can undergo deterioration due to the corrosion of the reinforcing steel. In order to monitor the chloride ingress into concrete chloride sensors could be embedded in concrete. However, the commercial availability of such sensors is still very limited. Therefore, the common practice is to extract samples from the existing concrete elements for the determination of the chloride concentration profiles. Besides the fact that this procedure is invasive, it is also time consuming and costly and thus, the market demands better alternatives. This article investigates the possibility of using a conductivity sensor as a detector for chlorides in concrete. Chlorides present in the concrete pore solution change its chemical composition and in turn also the conductivity. In the present study, the output signal of the sensor is analyzed for different additions of chlorides into concrete. The results show that there is a potential of using the conductivity sensor for detecting the chloride level.
Original languageEnglish
Title of host publicationProceedings of the 1st International Conference on the Chemistry of Construction Materials, 7-9 October 2013, Berlin, Germany
Place of PublicationBerlin
Pages351-354
Publication statusPublished - 2013
Event1st International Conference on the Chemistry of Construction Materials, October 7-9, 2013, Berlin, Germany - Berlin, Germany
Duration: 7 Oct 20139 Oct 2013

Conference

Conference1st International Conference on the Chemistry of Construction Materials, October 7-9, 2013, Berlin, Germany
CountryGermany
CityBerlin
Period7/10/139/10/13

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