You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.

    STP713

    Electrochemistry of Reinforcing Steel in Salt-Contaminated Concrete

    Published: 0


      Format Pages Price  
    PDF (204K) 14 $25   ADD TO CART
    Complete Source PDF (3.0M) 213 $55   ADD TO CART

    Abstract

    Corrosion rates of reinforcing steel have been measured in concrete using the polarization resistance technique. The corrosion rates have been calculated for seven different sodium chloride content and two different surface conditions of steel in concrete. The results from partially coated reinforcing steel specimens indicate the existence of a critical sodium chloride concentration between 0.1 and 0.2 percent by weight of concrete at which the rate of corrosion increases significantly. Anodic and cathodic Tafel slopes have also been determined experimentally. The high values of Tafel slopes may be attributed in part to IR drop; however, more research is needed to clarify this matter.

    Keywords:

    reinforcing steel, corrosion, concrete, bridge decks, chlorides, corrosion rate, polarization resistance, Tafel slope


    Author Information:

    Locke, CE
    Associate professor and graduate student, University of Oklahoma, School of Chemical Engineering and Materials Science, Norman, Okla

    Siman, A
    Associate professor and graduate student, University of Oklahoma, School of Chemical Engineering and Materials Science, Norman, Okla


    Committee/Subcommittee: G01.11

    DOI: 10.1520/STP27465S