Print Email Facebook Twitter Activated Carbon as a Pseudo-reference Electrode for Potentiometric Sensing Inside Concrete Title Activated Carbon as a Pseudo-reference Electrode for Potentiometric Sensing Inside Concrete Author Abbas, Y. Pargar, F. Olthuis, W. Van den Berg, A. Faculty Civil Engineering and Geosciences Department Structural Engineering Date 2014-12-31 Abstract The half-cell potential of the Activated carbon (AC), due to its high double layer capacitance (EDL), remains stable in high ionic electrolyte. The open circuit potential (OCV) of the AC, with EDL of 40 – 50 F, shows a stable potential (10 mV variation) over two weeks in the cement pore solution (sat. Ca(OH)2). The OCV is less sensitive to the pH change from pH 8 to 12 (range inside concrete). The potentiometric response of a Ag/AgCl vs. AC pseudo-reference shows a near-Nernstian response (-51 mV/decade). The AC electrode can be proposed as a pseudo-reference for the potentiometric monitoring inside concrete. Subject activated carbonopen circuit potentialpseudo-reference electrodepotentiometric measurementconcrete structures To reference this document use: http://resolver.tudelft.nl/uuid:31d41030-f51a-4d0e-8e31-14a3a978deff DOI https://doi.org/10.1016/j.proeng.2014.11.717 Publisher Elsevier Source Procedia Engineering, 87, 2014; EUROSENSORS 2014, the 28th European Conference on Solid-State Transducers Part of collection Institutional Repository Document type journal article Rights © 2014 The AuthorsThis is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/) Files PDF Pargar_2014.pdf 638.21 KB Close viewer /islandora/object/uuid:31d41030-f51a-4d0e-8e31-14a3a978deff/datastream/OBJ/view