Volume 42, Issue 5 (September 2014)

    Influence of Steel Wool Fibers on the Mechanical, Termal, and Healing Properties of Dense Asphalt Concrete

    (Received 12 August 2013; accepted 8 January 2014)

    Published Online: 2014

    CODEN: JTEOAD

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    Abstract

    This paper summarizes the main results of experimental research on the induction healing of dense asphalt concrete with steel wool fibers. Different physical properties of dense asphalt concrete, as the steel wool fibers distribution, mechanical properties, thermal conductivity, and healing via induction heating have been analysed. The main results show that short and thick fibers disperse very well in the mixture, while long and thin fibers produce clusters. It was also observed that fibers can be damaged during the mixing and compaction processes. In addition, it was found that steel wool fibers do not significantly improve the mechanical properties and damage resistance of dense asphalt concrete. Moreover, steel wool fibers slightly increase the thermal conductivity of dense asphalt concrete. Furthermore, the temperature reached due to induction heating increases with the number of fibers in the mixture and with their diameter. Finally, it was found that dense asphalt concrete heals through the increase of temperature and that the type and diameter of fibers do not influence the healing properties of dense asphalt concrete.


    Author Information:

    García, Alvaro
    Empa, Swiss Federal Laboratories for Materials Science and Technology, Duebendorf,

    Division of Infrastructure and Geomatics, Faculty of Engineering, Univ. of Nottingham, University Park,

    Norambuena-Contreras, Jose
    Department of Civil and Environmental Engineering, University of Bío-Bío, Concepción,

    Bueno, Moises
    Empa, Swiss Federal Laboratories for Materials Science and Technology, Duebendorf,

    Partl, Manfred N.
    Empa, Swiss Federal Laboratories for Materials Science and Technology, Duebendorf,

    School of Architecture and the Build Environment, KTH Stockholm, Highway and Railway Engineering, Stockholm,


    Stock #: JTE20130197

    ISSN: 0090-3973

    DOI: 10.1520/JTE20130197

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    Author
    Title Influence of Steel Wool Fibers on the Mechanical, Termal, and Healing Properties of Dense Asphalt Concrete
    Symposium , 0000-00-00
    Committee D04