Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7145153 | Sensors and Actuators B: Chemical | 2016 | 42 Pages |
Abstract
In order to monitor the chloride penetration processes, a potentiometric embedded thick-film sensor was developed. This paper includes the results of research on the characterization of Clâ sensors made of Ag/AgCl resistive pastes (materials, sensitivity and detection limit, reproducibility, reversibility and response time, long-term performance and reliability in the presence of interfering agents). Theoretical expressions have been developed to describe the potentiometric response including the presence of OHâ and bromide ions. The study shows that thick-film sensors are able to monitor Clâ activity as a function of the redox potential. Sensors are also capable of providing reliable and continuous real-time information on phenomena related to the progress of the chloride penetration front in concrete specimens. These sensors are a promising tool because thick-film technology allows us to obtain miniaturized, low-cost, robust and stable long-term sensors for Clâ monitoring.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
José M. GandÃa-Romero, Román Bataller, Pablo Monzón, Inmaculada Campos, Eduardo GarcÃa-Breijo, Manuel Valcuende, Juan Soto,