STP1137: Utilization of Electrochemical Impedance Techniques to Estimate Corrosion Damage of Steel Infrastructures

    Homma, K
    Researcher of Steel Structure Development Center, Steel Research Laboratories, Technical Development Bureau, Nippon Steel Corporation, Chiba-ken,

    Goto, N
    Senior Researcher of Steel Structure Development Center, Steel Research Laboratories, Technical Development Bureau, Nippon Steel Corporation, Chiba-ken,

    Matsuoka, K
    Senior Researcher of Steel Structure Development Center, Steel Research Laboratories, Technical Development Bureau, Nippon Steel Corporation, Chiba-ken,

    Ito, S
    Senior Research Chemist of Stainless Steel S Titanium Laboratory, Steel Research Laboratories, Technical Development Bureau, Nippon Steel Corporation, Chiba-ken,

    Pages: 15    Published: Jan 1992


    Abstract

    Infrastructures such as bridges, highways, pipelines and harbor piers sometimes suffer from corrosion damage during their service life. To diagnose deterioration of infrastructures and secure effective maintenance, in-situ corrosion monitoring methods based on electrochemical impedance techniques have been developed. This paper reports three examples of new corrosion monitoring sensors: 1) a sensor for detecting corrosion of marine steel structures in seawater, 2) a sensor for detecting corrosion of reinforcing bars in concrete, and 3) a sensor for detecting coating deterioration of painted steel structures in the atmosphere. The effectiveness of these sensors has been verified by experiments both in the laboratory and in the field.

    Keywords:

    corrosion, monitoring, impedance, infrastructure, electrochemistry


    Paper ID: STP19760S

    Committee/Subcommittee: G01.11

    DOI: 10.1520/STP19760S


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