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    Electrical Resistance Tomography imaging of concrete

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    Type
    Article
    Authors
    Karhunen, Kimmo
    Seppänen, Aku
    Lehikoinen, Anssi
    Monteiro, Paulo J. M. cc
    Kaipio, Jari P.
    KAUST Grant Number
    KUS-I1-004021
    Date
    2010-01
    Permanent link to this record
    http://hdl.handle.net/10754/598128
    
    Metadata
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    Abstract
    We apply Electrical Resistance Tomography (ERT) for three dimensional imaging of concrete. In ERT, alternating currents are injected into the target using an array of electrodes attached to the target surface, and the resulting voltages are measured using the same electrodes. These boundary measurements are used for reconstructing the internal (3D) conductivity distribution of the target. In reinforced concrete, the metallic phases (reinforcing bars and fibers), cracks and air voids, moisture gradients, and the chloride distribution in the matrix carry contrast with respect to conductivity. While electrical measurements have been widely used to characterize the properties of concrete, only preliminary results of applying ERT to concrete imaging have been published so far. The aim of this paper is to carry out a feasibility evaluation with specifically cast samples. The results indicate that ERT may be a feasible modality for non-destructive evaluation of concrete. © 2009 Elsevier Ltd. All rights reserved.
    Citation
    Karhunen K, Seppänen A, Lehikoinen A, Monteiro PJM, Kaipio JP (2010) Electrical Resistance Tomography imaging of concrete. Cement and Concrete Research 40: 137–145. Available: http://dx.doi.org/10.1016/j.cemconres.2009.08.023.
    Sponsors
    Paulo Monteiro wishes to acknowledge the financial support given by Award No. KUS-I1-004021, made by King Abdullah University of Science and Technology (KAUST).
    Publisher
    Elsevier BV
    Journal
    Cement and Concrete Research
    DOI
    10.1016/j.cemconres.2009.08.023
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.cemconres.2009.08.023
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