Enhancement of the Ductility Index of Concrete Pavement Using Moderate-Volume of Hybrid Fibers

  • Authors

    • Qais Sahib Banyhussan
    2018-11-28
    https://doi.org/10.14419/ijet.v7i4.20.25857
  • Concrete pavement, deflection hardening, ductility index, hybrid fiber, stress index.

  • Abstract

    The concrete used in highway structures such as pavements, bridge approach slabs or bridge decks are deteriorated much faster rate than other concrete structures due to environmental and traffic loads leading to sudden failure and/or more cracking potential. The present paper investigates experimentally the development of ductile concrete mixtures. Twenty-four mixtures with three types of fibers (PVA, Hocked steel fiber and Nylo-mono) were used. River sand as a fine aggregate and coarse aggregate with a maximum aggregate size of (9.5 mm) were adopted. Fly ash was used as a replacement of Portland cement with three ratios. Compressive and flexural strengths tests were achieved at different curing ages (7, 28 and 90 days) to determine the stress and ductility indexes. The results show that  due to more fly ash content there is an increase in the stress index and decrease in the ductility index for mixtures containing 1% steel and 1% PVA fibers by volume. In addition, the results demonstrated that using of Nylo-mono enhances the ductility index better than PVA. Finally, the use of 2% by volume hybrid fiber (PVA0.5+Steel.0%+Nylo-mono 0.5) achieved a ductile concrete mixture that has a ductility index nine times higher than that of plain concrete.

     

     

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  • How to Cite

    Sahib Banyhussan, Q. (2018). Enhancement of the Ductility Index of Concrete Pavement Using Moderate-Volume of Hybrid Fibers. International Journal of Engineering & Technology, 7(4.20), 103-107. https://doi.org/10.14419/ijet.v7i4.20.25857

    Received date: 2019-01-13

    Accepted date: 2019-01-13

    Published date: 2018-11-28