KUKU

KU ScholarWorks

  • myKU
  • Email
  • Enroll & Pay
  • KU Directory
    • Login
    View Item 
    •   KU ScholarWorks
    • Engineering
    • Infrastructure Research Institute Scholarly Works
    • View Item
    •   KU ScholarWorks
    • Engineering
    • Infrastructure Research Institute Scholarly Works
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Evaluation of Mechanical And Corrosion Properties of MMFX Reinforcing Steel for Concrete

    Thumbnail
    View/Open
    SM70.pdf (7.126Mb)
    Issue Date
    2002-01
    Publisher
    University of Kansas Center for Research, Inc.
    Type
    Technical Report
    Is part of series
    SL Report;70
    Published Version
    https://iri.ku.edu/reports
    Metadata
    Show full item record
    Abstract
    The variability of the mechanical properties and weight of steel reinforcing bars produced in the United States and Canada under ASTM A 615, A 616, and A 706 in 1997 is evaluated and expressions are developed to represent the probability distribution functions for yield and tensile strength. Thirty-four mills were invited to submit data on yield strength, tensile strength, elongation, and percent of nominal weight. Of these, 29 mills submitted data on a heat-by-heat basis, three mills provided average values (no data on a heat-by-heat basis), one mill provided data on “No Grade” bars (these were not used in this analysis), and one mill did not respond to the request for data. A statistical analysis of bar properties is conducted. Trends in the data are evaluated based on grade, bar size, and production mill. Beta functions are developed to represent the probability distribution functions for yield and tensile strength for each bar size, grade, and steel type, as well as for all bars for each grade and steel type. The analyses show that less than 0.1% of the steel heats failed to meet minimum ASTM standards for yield strength, and less than 0.1% of the steel heats failed to meet minimum ASTM standards for tensile strength. Approximately 1.2% of the steel heats failed to meet minimum ASTM standards for elongation, but no heats failed to meet the minimum ASTM standard for weight. The beta distributions for yield strength covering all A 615 Grade 40 and all A 615 Grade 60 bars provide good representations for the distributions for individual bar sizes within each of these grades, with the exception of A 615 No. 14 and No. 18 bars, which exhibit significantly different distribution functions. Both normal and beta distribution functions (for the individual bars and all bars) can be used to represent the distributions of yield strength for A 615 Grade 75, A 616, and A 706 bars. For tensile strength, the distribution for all bar sizes is recommended for A 615 Grade 40 bars. The beta functions developed for the individual bar sizes for A 615 Grade 60 bars provide a good match with the actual tensile strength distributions, with the exception of No. 3 through No. 5 and No. 7 bars. Both normal and beta distribution functions can be used to represent the distributions of tensile strength for A 615 Grade 75, A 616, and A 706 bars for both individual bar sizes and all bars.
    URI
    http://hdl.handle.net/1808/20423
    Collections
    • Infrastructure Research Institute Scholarly Works [314]
    Citation
    Gong, L., Darwin, D., Browning, J., and Locke, C.E., Jr., "Evaluation of Mechanical And Corrosion Properties of MMFX Reinforcing Steel for Concrete," SM Report No. 70, University of Kansas Center for Research, Inc., Lawrence, Kansas, December 2002, 113 pp.

    Items in KU ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.


    We want to hear from you! Please share your stories about how Open Access to this item benefits YOU.


    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
     

     

    Browse

    All of KU ScholarWorksCommunities & CollectionsThis Collection

    My Account

    LoginRegister

    Statistics

    View Usage Statistics

    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
     

     

    The University of Kansas
      Contact KU ScholarWorks
    Lawrence, KS | Maps
     
    • Academics
    • Admission
    • Alumni
    • Athletics
    • Campuses
    • Giving
    • Jobs

    The University of Kansas prohibits discrimination on the basis of race, color, ethnicity, religion, sex, national origin, age, ancestry, disability, status as a veteran, sexual orientation, marital status, parental status, gender identity, gender expression and genetic information in the University’s programs and activities. The following person has been designated to handle inquiries regarding the non-discrimination policies: Director of the Office of Institutional Opportunity and Access, IOA@ku.edu, 1246 W. Campus Road, Room 153A, Lawrence, KS, 66045, (785)864-6414, 711 TTY.

     Contact KU
    Lawrence, KS | Maps