Comparison of Measurements Provided by Several Corrosion Rate Meters with Modulated Confinement of the Current

    Volume 5, Issue 5 (May 2008)

    ISSN: 1546-962X

    CODEN: JAIOAD

    Published Online: 15 May 2008

    Page Count: 9


    Martinez, I.
    Institute of Construction Science, Madrid,

    Andrade, C.
    Institute of Construction Science, Madrid,

    Marie-Victoire, E.
    Institut de Restauration, Paris,

    Bouteiller, V.
    Laboratoire Central des Ponts et Chaussées, Paris,

    Rebolledo, N.
    Institute of Construction Science, Madrid,

    (Received 23 July 2007; accepted 31 March 2008)

    Abstract

    The main difficulty for the application of Rp on site is the vanishing of the current with the distance which has been overcome with the use of a modulated confinement of the current only feasible if the guard ring is monitored during the measurement by means of electrodes able to detect the distance reached by the current.

    In the present paper after a short review of existing corrosion rate meters to measure on site, results of a comparison made of reinforced concrete slabs with various degradations such as carbonation or chloride among several using a guard ring with modulated confinement of the current is presented in order to have a reproducibility and repeatability for the measurements. Results show a good correlation among all the methods used for the corrosion rate evaluation.


    Paper ID: JAI101337

    DOI: 10.1520/JAI101337

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    Author
    Title Comparison of Measurements Provided by Several Corrosion Rate Meters with Modulated Confinement of the Current
    Symposium Advances in Electrochemical Techniques for Corrosion Monitoring and Measurement, 2007-05-23
    Committee G01