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    Volume 7, Issue 3 (October 2018)

    Special Issue Paper

    Evaluating the Potential for Replacing the Nuclear Density Gauge using Nonnuclear Alternative Devices and Methods

    (Received 24 May 2017; accepted 16 October 2017)

    Published Online: 2018

    CODEN: ACEMF9

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    Abstract

    This study was initiated with the aim of replacing the nuclear density gauge (NDG) with nonnuclear alternative methods that can be used as acceptance tools during the compaction of soils and dense graded aggregates (i.e., unbound pavement layers). To fulfill this objective, a laboratory procedure for compacting large samples was developed. This procedure facilitated testing using three nonnuclear devices: Briaud compaction device (BCD), light weight falling deflectometer (LWD), and dynamic cone penetrometer (DCP). Four types of aggregates, two subgrade soils, one dense graded aggregate, and one recycled concrete aggregates, were selected to comprehensively cover a wide range of subgrade and base/subbase materials typically used in the State of New Jersey (NJ). Each device was evaluated for accuracy and repeatability. The sensitivity of the results measured from each device to moisture content, compaction effort applied, and testing time was also evaluated. Based on testing results, it was found that the DCP was most sensitive to detecting changes in the measured parameters. The results also indicated that the DCP was the most suitable device for replacing the NDG.

    Author Information:

    Abyad, Janine
    Department of Civil and Environmental Engineering, Rowan University, Glassboro, NJ

    Ali, Ayman W.
    Department of Civil and Environmental Engineering, Rowan University, Glassboro, NJ

    Mehta, Yusuf A.
    Department of Civil and Environmental Engineering, Rowan University, Glassboro, NJ

    Celaya, Manuel
    Advanced Infrastructure Design, Hamilton Township, NJ

    Chen, Fangliang
    Columbia University, New York, NY

    Venkiteela, Giri
    New Jersey Department of Transportation, Trenton, NJ

    Offenbacker, Daniel
    Department of Civil and Environmental Engineering, Rowan University, Glassboro, NJ


    Stock #: ACEM20170074

    ISSN:2379-1357

    DOI: 10.1520/ACEM20170074

    Author
    Title Evaluating the Potential for Replacing the Nuclear Density Gauge using Nonnuclear Alternative Devices and Methods
    Symposium ,
    Committee D04