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    Tolerable Strains for HMA Overlays over Concrete Pavements

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    Gautam_ku_0099M_10447_DATA_1.pdf (10.08Mb)
    Issue Date
    2009-06-10
    Author
    Gautam, Ashwani
    Publisher
    University of Kansas
    Format
    102 pages
    Type
    Thesis
    Degree Level
    M.S.
    Discipline
    Civil, Environmental, & Architectural Engineering
    Rights
    This item is protected by copyright and unless otherwise specified the copyright of this thesis/dissertation is held by the author.
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    Abstract
    Materials from two Kansas Department of Transportation (KDOT) projects', namely 089 C-4318-01 (Mix 1) and 56-29 KA-1087-01 (Mix 2), were used for the laboratory study. Considering typical overlay thicknesses used in Kansas, samples of thickness 1.5in and 2in were chosen. Direct shear box tests and semi-circular bend tests were conducted on these chosen HMA mixtures to characterize their shear and tensile properties respectively. Crack width was simulated in lab by steel bars having thickness 0.25in, 0.375in, and 0.5in in direct shear tests. Measured relative movements of these HMA mixtures at failure varied from 4.5 percent to 9.4 percent of the sample thickness depending upon the simulated crack width. Tolerable tensile strain of Mix 1 under fatigue loading in semi-circular bend tests was 3.5 percent and that of Mix 2 was 1.4 percent for 2in thick samples. Two inch thick samples gave more consistent results than 1.5 in. thick samples hence the results obtained from 2in thick samples should be used.
    URI
    http://hdl.handle.net/1808/5290
    Collections
    • Engineering Dissertations and Theses [705]
    • Theses [3711]

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
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    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
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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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