Title :
Development of microsensors for chloride concentration in concrete
Author :
Cao, Feifei ; Greve, David W. ; Oppenheim, I.J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Carnegie Mellon Univ., Pittsburgh, PA
fDate :
Oct. 30 2005-Nov. 3 2005
Abstract :
Chloride infiltration into concrete structures causes corrosion of steel reinforcing rods and eventual failure. Here we report on a three-electrode electrochemical sensor suitable for monitoring chloride concentrations in concrete. We use voltammetry to characterize the sensor for stability and sensitivity in KCl and NaClO solutions. We also outline a process for fabrication of an integrated microsensor and demonstrate crucial process steps for the formation of electrodes on a CMOS chip
Keywords :
corrosion testing; electrochemical sensors; microsensors; reinforced concrete; voltammetry (chemical analysis); CMOS chip; KCl; NaClO; chloride concentration; concrete structures; corrosion; electrochemical sensor; microsensors; steel reinforcing rods; voltammetry; Concrete; Condition monitoring; Corrosion; Fabrication; Kirchhoff´s Law; Microsensors; Sensor phenomena and characterization; Stability; Steel; Structural rods;
Conference_Titel :
Sensors, 2005 IEEE
Conference_Location :
Irvine, CA
Print_ISBN :
0-7803-9056-3
DOI :
10.1109/ICSENS.2005.1597669
