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.

    Influence of corrosion crack patterns on the rate of crack widening of RC beams

    Thumbnail
    View/Open
    Main article (1.335Mb)
    Date
    2011
    Author
    Malumbela, G.
    Moyo, P.
    Alexander, M.
    Publisher
    Elsevier http://www.elsevier.com/locate/conbuiltmat
    Type
    Published Article
    Metadata
    Show full item record
    Abstract
    Corrosion crack widths are often used by structural engineers in the field to predict level of steel corrosion as well as residual load-bearing capacities of corroding RC structures. This paper presents further work on this matter but with focus on corrosion crack patterns and how they affect rate of crack widening. It is based on results from a research where 17 quasi-full-scale (153 254 3000 mm) RC beams were corroded under various levels of sustained loads. The rate of widening of corrosion crack widths was found to be very much dependent on crack patterns. Deformation of cover concrete under each crack pattern was discussed. It was found that at maximum crack widths below 0.6 mm, the majority of beams exhibited nearly similar crack patterns as well as rate of widening of corrosion cracks. A mass loss of steel of 1% corresponded to a maximum crack width between 0.14 and 0.22 mm. At large crack widths (>0.6 mm), various beams exhibited very different rates of crack widening. It was shown that at crack widths above 0.6 mm, to be conservative an increase in mass loss of steel of 1% corresponded to corrosion crack widening of 0.02 mm.
    URI
    http://hdl.handle.net/10311/676
    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