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    Volume 45, Issue 1 (January 2017)

    Special Issue Paper

    Characterizing Vibration Responses of Cement Pavement Slabs Atop Different Interlayers to Moving Vehicle Load

    (Received 22 January 2016; accepted 22 April 2016)

    Published Online: 2017

    CODEN: JTEVAB

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    Abstract

    This research characterized the vibration responses of cement pavement surface slabs atop different interlayers under a moving vehicle load via the laboratory simulated vibration response tests and the field tests. This was done with the help of a micro-seismic monitoring system. In the laboratory simulated vibration response tests, a 4.5 kg hammer was used to impose impact loading, while geotextile and rubber sheet were used as the interlayers. The laboratory test results indicated that under the same impact load, compared with the surface slabs without an interlayer beneath, the vector sum of the peak vibration velocity of the surface slabs atop the rubber sheet interlayer, the single-layered geotextile interlayer, and the double-layered geotextile interlayer decreased by 68, 56, and 67 %, respectively; the vector sum of their maximum displacement amplitude decreased by 96, 52, and 45 %, respectively. In the field tests for vibration response, which were done under an estimated vehicle loading 60 t (rear axle loading 30 t) and an estimated vehicle speed of 60 km/h, the surface slabs with geotextile or plastic membrane as the interlayer beneath were tested. The field test results indicated that under the same other conditions, compared with the surface slabs without an interlayer beneath, the vector sum of the peak vibration velocity of the surface slabs atop the interlayer of a double-layered geotextile plus a single-layered plastic membrane, the interlayer of a single-layered geotextile plus a single-layered plastic membrane, and the interlayer of a single-layered plastic membrane decreased by 53, 46, and 10 %, respectively. The vector sum of their maximum displacement amplitude decreased by 41, 39, and 19 %, respectively. To conclude, the rubber sheet interlayers and the geotextile interlayers can help the cement pavement surface slabs significantly damp the vibrations caused by the moving vehicle load or the impact load.


    Author Information:

    Yao, J. L.
    School of Traffic and Transportation Engineering, Changsha Univ. of Science and Technology; Key Laboratory of Road Structure and Material of Ministry of Transport (Changsha), Changsha, Hunan

    Guan, R.
    School of Traffic and Transportation Engineering, Changsha Univ. of Science and Technology, Changsha, Hunan

    Yuan, J. B.
    Chengnan College, Changsha Univ. of Science and Technology, Changsha, Hunan

    Liu, B.
    School of Traffic and Transportation Engineering, Changsha Univ. of Science and Technology, Changsha, Hunan


    Stock #: JTE20160046

    ISSN:0090-3973

    DOI: 10.1520/JTE20160046

    Author
    Title Characterizing Vibration Responses of Cement Pavement Slabs Atop Different Interlayers to Moving Vehicle Load
    Symposium ,
    Committee D04