Fabrication and Performance of All-Solid-State Chloride Sensors in Synthetic Concrete Pore Solutions

One type of all-solid-state chloride sensor was fabricated using a MnO2 electrode and a Ag/AgCl electrode. The potentiometric response of the sensor to chloride in synthetic concrete pore solutions was systematically studied, and the polarization performance was also evaluated. The results show a good linear relationship between the potential reading of the sensor and the logarithm of chloride activity (concentration ranges from 0.05 to 5.0 M), and the potential value remains stable with increasing immersion time. The existence of K+, Ca2+, Na+ and SO42− ions have little influence on the potentiometric response of the sensor to chloride, but the pH has a significant influence on the potential value of the sensor at low chloride concentration. The potential reading of the sensor increases linearly with the solution temperature over the range from 5 to 45 °C. Meanwhile, an excellent polarization behavior is proven by galvanostatic and potentiodynamic tests. All of the results reveal that the developed sensor has a great potential for monitoring chloride ions in concrete environments.

[1]  K. Videm.  Electrochemical studies of steel in cement mortar containing chloride and micro-silica , 2007 .

[2]  E. Richter,et al.  FIA-potentiometry in the sub-Nernstian response region for rapid and direct chloride assays in milk and in coconut water. , 2005, Talanta.

[3]  Velu Saraswathy,et al.  Electrochemical studies on the performance characteristics of alkaline solid embeddable sensor for concrete environments , 2008 .

[4]  C. Andrade,et al.  Chloride-ion activities in simplified synthetic concrete pore solutions : The effect of the accompanying ions , 2004 .

[5]  Jaroon Jakmunee,et al.  Determination of chloride in admixtures and aggregates for cement by a simple flow injection potentiometric system. , 2008, Talanta.

[6]  Maria de Fátima Montemor,et al.  Multiprobe chloride sensor for in situ monitoring of reinforced concrete structures , 2006 .

[7]  A. Ivaska,et al.  Soluble semiconducting poly(3-octylthiophene) as a solid-contact material in all-solid-state chloride sensors , 2008 .

[8]  A. Sagüés,et al.  In situ leaching method for determination of chloride in concrete pore water , 2006 .

[9]  A. Michalska,et al.  All-solid-state planar miniature ion-selective chloride electrode , 2002 .

[10]  Rasheeduzzafar,et al.  Effect of cement composition on chloride binding and corrosion of reinforcing steel in concrete , 1991 .

[11]  H. S. Wolff,et al.  iRun: Horizontal and Vertical Shape of a Region-Based Graph Compression , 2022, Sensors.

[12]  C. Andrade,et al.  Measurements of Chloride Activity Coefficients in Real Portland Cement Paste Pore Solutions , 2001 .

[13]  C. Page,et al.  The pore solution phase of carbonated cement pastes , 2005 .

[14]  Michel Ghosn,et al.  Chloride-induced corrosion of reinforced concrete bridge decks , 2002 .

[15]  R. Mahajan,et al.  Cu(II) complexes as receptor molecules for development of new chloride sensors , 2006 .

[16]  S. Jacobsen.  Calculating liquid transport into high-performance concrete during wet freeze/thaw , 2005 .

[17]  L. Bertolini,et al.  Corrosion behaviour of steel in concrete in the presence of stray current , 2007 .

[18]  J. D. Scantlebury,et al.  Sources of error in using silver/silver chloride electrodes to monitor chloride activity in concrete , 2001 .

[19]  J. D. Scantlebury,et al.  Monitoring chloride concentrations in hardened cement pastes using ion selective electrodes , 1996 .

[20]  You‐Ming Zhang,et al.  Simple colorimetric sensors with high selectivity for acetate and chloride in aqueous solution , 2009 .

[21]  Kenneth T. V. Grattan,et al.  Chloride ion optical sensing using a long period grating pair , 2008 .

[22]  Yoon-Cheol Ha,et al.  A promising potential embeddable sensor for corrosion monitoring application in concrete structures , 2007 .

[23]  Kenneth S. Pitzer,et al.  Thermodynamics of electrolytes. I. Theoretical basis and general equations , 1973 .

[24]  Wilfrid A. Nixon,et al.  Damaging effects of deicing chemicals on concrete materials , 2006 .

[25]  H. Muguruma,et al.  Diffusion-controlled size-selective chloride ion sensing in the presence of bromide ion using a thin, nanoporous, plasma-polymerized coating on an Ag/AgCl electrode , 2007 .

[26]  Bernhard Elsener,et al.  Non destructive determination of the free chloride content in cement based materials , 2003 .

[27]  Miguel Ángel Climent-Llorca,et al.  Embeddable Ag/AgCl sensors for in-situ monitoring chloride contents in concrete , 1996 .

[28]  G. S. Duffó,et al.  Characterization of solid embeddable reference electrodes for corrosion monitoring in reinforced concrete structures , 2009 .

[29]  J. Koryta,et al.  Theory and applications of ion-selective electrodes , 1972 .

[30]  Velu Saraswathy,et al.  Evaluation of embeddable potential sensor for corrosion monitoring in concrete structures , 2008 .

[31]  Jeong-Hyo Bae,et al.  Electrochemical studies on the solid embeddable reference sensors for corrosion monitoring in concrete structure , 2006 .

[32]  Jing Wen Chen,et al.  The experimental investigation of concrete carbonation depth , 2006 .

[33]  Gabriela Valdés-Ramírez,et al.  Composites: A novel alternative to construct solid state Ag/AgCl reference electrodes , 2005 .

[34]  W. John McCarter,et al.  Sensor systems for use in reinforced concrete structures , 2004 .

[35]  Vinod K. Gupta,et al.  Chloride selective potentiometric sensor based on a newly synthesized hydrogen bonding anion receptor , 2009 .

[36]  A. Ivaska,et al.  All-solid-state chloride sensors based on electronically conducting, semiconducting and insulating polymer membranes , 2007 .

[37]  Peter L. Fuhr,et al.  Embedded fiber optic sensors for bridge deck chloride penetration measurement , 1998 .