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Remote Measurement of Linear Polarization Resistance In Concrete Structures

Published online by Cambridge University Press:  01 December 2016

F. Bernal Castillo ,
W. Aperador  and
G. Roa-Rodríguez
F. Bernal Castillo
Affiliation:
Universidad Militar Nueva Granada, Bogotá, Colombia.
W. Aperador
Affiliation:
Universidad Militar Nueva Granada, Bogotá, Colombia.
G. Roa-Rodríguez
Affiliation:
Universidad Militar Nueva Granada, Bogotá, Colombia.
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Abstract

The monitoring of corrosion in reinforced concrete structures is considered an important preventive factor against the corrosive damage. The present paper shows the design and construction of a device which performs remote measurements of the polarization resistance of reinforcing steel, this was made using the electrochemical technique of linear polarization resistance as a method to obtain the information of the corrosive process. The development was carried out by implementing a potentiostat based on a free development platform. The design allows to store all the data on a physical memory and to send the results through the mobile network to a web server, where the measured values can be analyzed using an internet connection.

The linear polarization resistance measurements were made in cylindrical concrete specimens with rebars of ½ ”, each one instrumented with embedded electrodes of Copper/Copper sulfate and graphite. The specimens were subjected to a saturated environment of chlorides (3.5%) where the corrosive process was monitored with the developed system. The results were compared with tests performed on a commercial potentiostat / galvanostat, where the values obtained have an mean of 4.83%.

Keywords

CarbonizationStructuralSteel
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1815: Symposium 6J – NACE: Corrosion And Metallurgy , 2016 , imrc2015.26
Copyright
Copyright © Materials Research Society 2016 

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References

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