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    Effect of Reinforcing Bar Deformation Pattern on Flexural Ductility

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    Darwin_1998.pdf (788.8Kb)
    Issue Date
    1998
    Author
    Tholen, Michael L.
    Darwin, David
    Publisher
    American Concrete Institute
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
    Published Version
    https://iri.ku.edu/reports
    Metadata
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    Abstract
    Concern has been expressed that increases in the stiffness of the bond force-slip relationship of reinforcing bars, resulting from increases in the relative rib area (Rr) of the bars, may have a negative impact on the flexural rotation capacity of reinforced concrete beams. To provide a better understanding of the effect of bar deformation pattern on flexural ductility simply supported reinforced concrete beams were tested to determine loading deflection and moment-rotation behavior using both conventional (Rr = 0.069) and high relative rib area (Rr = 0.119) bars. Reinforcement ratios equal to 43 and 68 percent of the balanced reinforcement ratio were used. The test show that a relatively large change in the relative rib area of reinforcing bars has no measurable effect on the distribution of flexural cracks or on the displacement and rotational capacity of beams in which plastic hinges develop.
    URI
    http://hdl.handle.net/1808/23414
    Collections
    • Infrastructure Research Institute Scholarly Works [327]
    Citation
    Tholen, M. L. and Darwin, D., "Effect of Reinforcing Bar Deformation Pattern on Flexural Ductility," ACI Structural Journal, Vol. 95, No. 1, Jan.-Feb. 1998, pp. 37-42.

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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