UBRISA

View Item 
  •   Ubrisa Home
  • Faculty of Engineering and Technology
  • Civil Engineering
  • Research articles (Dept of Civil Engineering)
  • View Item
  •   Ubrisa Home
  • Faculty of Engineering and Technology
  • Civil Engineering
  • Research articles (Dept of Civil Engineering)
  • View Item
    • Login
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Model for cover cracking of RC beams due to partial surface steel corrosion

    Thumbnail
    View/Open
    Main article (470.1Kb)
    Date
    2011
    Author
    Malumbela, G.
    Alexander, M.
    Moyo, P.
    Publisher
    Elsevier http://www.elsevier.com/locate/conbuildmat
    Type
    Published Article
    Metadata
    Show full item record
    Abstract
    Cracking of the cover concrete due to steel corrosion is considered by many researchers to indicate the end-of-service life of corrosion-affected reinforced concrete (RC) structures. Numerous models have been developed to predict the time from corrosion initiation to cracking of the cover concrete. In the previous models, concrete with corroding steel bars was assumed to behave like a thick-walled cylinder under uniform internal pressure. Recent research publications have however, shown that steel corrosion is often concentrated on the surface of the steel that faces the direction of ingress of corrosion agents. This paper presents a model that relates the level of partial surface steel corrosion with the transverse and vertical strains measured on the exterior faces of corrosion-affected RC beams. The model assumes that the remaining section of the steel after corrosion is elliptical shaped. Finally, the model is calibrated with experimental data in the literature and it is shown that assuming uniform steel corrosion underestimates the internal pressure applied by the expansive corrosion products.
    URI
    http://hdl.handle.net/10311/682
    Collections
    • Research articles (Dept of Civil Engineering) [48]

    DSpace software copyright © 2002-2015  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    @mire NV
     

     

    Browse

    All of UBRISA > Communities & Collections > By Issue Date > Authors > Titles > SubjectsThis Collection > By Issue Date > Authors > Titles > Subjects

    My Account

    > Login > Register

    Statistics

    > Most Popular Items > Statistics by Country > Most Popular Authors