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    Active protection of fiber-reinforced polymer-wrapped reinforced concrete structures against corrosion

    Access Status
    Fulltext not available
    Authors
    Gadve, S.
    Mukherjee, Abhijit
    Malhotra, S.
    Date
    2011
    Type
    Journal Article
    
    Metadata
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    Citation
    Gadve, S. and Mukherjee, A. and Malhotra, S.N. 2011. Active protection of fiber-reinforced polymer-wrapped reinforced concrete structures against corrosion. Corrosion. 67 (2): pp. 025002-1-025002-11.
    Source Title
    Corrosion
    DOI
    10.5006/1.3549564
    ISSN
    00109312
    URI
    http://hdl.handle.net/20.500.11937/45772
    Collection
    • Curtin Research Publications
    Abstract

    Large numbers of reinforced concrete (RC) structures that have been damaged from corrosion of steel reinforcements are rehabilitated with fiber-reinforced polymer (FRP) composites. This paper investigates active protection of the steel embedded in concrete that is treated with surface-bonded carbon FRP. The electrically conductive carbon fiber is used as an anode while the reinforcing bar is used as a cathode. Concrete cylinder specimens with embedded steel bars are immersed in salt water, and anodic current is passed through the reinforcement to initiate cracking in concrete as a result of accelerated corrosion of steel. Carbon FRP sheets have been bonded adhesively to the cylinders. The adhesive has been modified to impart electrical conductivity. Specimens were exposed to a highly corrosive environment for a specified time. Pullout strength, mass loss, potentiodynamic scans, and the half-cell potential of steel are reported as metrics of performance of the samples. The proposed technique has been very effective in retarding the corrosion of steel.

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