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.
|Title of host publication||Proceedings of the 1st International Conference on the Chemistry of Construction Materials, 7-9 October 2013, Berlin, Germany|
|Place of Publication||Berlin|
|Publication status||Published - 2013|
|Event||1st International Conference on the Chemistry of Construction Materials, October 7-9, 2013, Berlin, Germany - Berlin, Germany|
Duration: 7 Oct 2013 → 9 Oct 2013
|Conference||1st International Conference on the Chemistry of Construction Materials, October 7-9, 2013, Berlin, Germany|
|Period||7/10/13 → 9/10/13|