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Article

Electrochemical Noise Measurement to Assess Corrosion of Steel Reinforcement in Concrete

1
Waterside Campus, University of Northampton, Northampton NN1 5PH, UK
2
Centre for Infrastructure Maintenance, Materials & Engineering Research Institute, Sheffield Hallam University, Howard Street, Sheffield S1 1WB, UK
*
Author to whom correspondence should be addressed.
Academic Editors: Jose M. Bastidas and David M. Bastidas
Materials 2021, 14(18), 5392; https://doi.org/10.3390/ma14185392
Received: 23 July 2021 / Revised: 14 September 2021 / Accepted: 15 September 2021 / Published: 18 September 2021
The electrochemical noise method (ENM) has previously been employed to monitor the corrosion of steel reinforcement in concrete. The development of solid-state Ag/AgCl-based probes and dedicated monitoring technology (ProCoMeter) now offers a wider range of ENM configurations. The present study involves the laboratory investigation of three mortar samples containing steel bars and varying additions of chloride, with a view to future field application. ENM could be used to provide corrosion information on reinforcement without the need to provide direct electrical connections to the steel and without the risk or inducing or increasing corrosion. In addition to half-cell potentials, measurements were made using ENM in three different probe configurations over a total test period of 90 days. The samples were then broken open and the bars extracted and cleaned. A comparison was then made between the calculated metal thickness loss obtained from the Rn values and the actual metal thickness loss. The results showed that each configuration was able to order the results in the expected manner, with the simple single substrate (SSS) arrangement providing the best correlation with direct measurements. The study is ongoing with the intention of measurements being obtained in situ on existing reinforced concrete structures. View Full-Text
Keywords: concrete; corrosion; electrochemical noise; reinforcement; steel concrete; corrosion; electrochemical noise; reinforcement; steel
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MDPI and ACS Style

Mills, D.; Lambert, P.; Yang, S. Electrochemical Noise Measurement to Assess Corrosion of Steel Reinforcement in Concrete. Materials 2021, 14, 5392. https://doi.org/10.3390/ma14185392

AMA Style

Mills D, Lambert P, Yang S. Electrochemical Noise Measurement to Assess Corrosion of Steel Reinforcement in Concrete. Materials. 2021; 14(18):5392. https://doi.org/10.3390/ma14185392

Chicago/Turabian Style

Mills, Douglas, Paul Lambert, and Shengming Yang. 2021. "Electrochemical Noise Measurement to Assess Corrosion of Steel Reinforcement in Concrete" Materials 14, no. 18: 5392. https://doi.org/10.3390/ma14185392

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