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    Volume 48, Issue 1 (January 2020)

    Special Issue Paper

    Reproduction of Geogrid In Situ Damage Used in Asphalt Concrete Pavement with Indentation Tests

    (Received 14 December 2018; accepted 23 July 2019)

    CODEN: JTEVAB

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    Abstract

    Geogrids are used for the rehabilitation of cracked pavements. To ensure an efficient reinforcement, it is required to know the residual mechanical properties of the geogrid after its implementation and compaction of the above asphalt concrete layer and the level of damage of the grid. This article presents the results of the national French project SolDuGri dealing with pavement reinforcement by geogrids and more precisely the reproduction in laboratory of the in situ damage. In this project, full-scale tests have been performed to evaluate the in situ damage of four different types of geogrids in asphalt concrete pavements. Then, after construction, the geogrids have been recovered from different locations on the field sections, where they had been subjected to compaction. These grids have been subjected to direct tension tests in the laboratory. Laboratory analyses like scanned asphalt concrete and greogrid surfaces have been performed to evaluate indenter shapes. Different sets of indenters have been made, and a laboratory complete study of greogrid indentation tests has been performed with different sets of temperature, indenter shapes, and indentation forces. The first conclusions are that the indenter geometry and the temperature have the main influence on the strength resistance and elastic modulus of the grid. Results obtained after indentation performed in laboratory can be compared to those measured on in situ recovered grids.

    Author Information:

    Chazallon, Cyrille
    Shandong Provincial Key Laboratory of Road and Traffic Engineering in Colleges and Universities, Shandong Jianzhu University, Jinan,

    ICube Joint Research Unit 7357, National Center for Scientific Research, National Institute of Applied Sciences de Strasbourg, Université de Strasbourg, Strasbourg CEDEX,

    Barazzutti, Cédric
    Institut Charles Sadron, Internal Research Unit 22, National Center for Scientific Research, National Institute of Applied Sciences de Strasbourg, Université de Strasbourg, Strasbourg,

    Pelletier, Hervé
    Institut Charles Sadron, Internal Research Unit 22, National Center for Scientific Research, National Institute of Applied Sciences de Strasbourg, Université de Strasbourg, Strasbourg,

    Nguyen, Mai-Lan
    The French Institute of Science and Technology for Transport, Development and Networks, Centre de Nantes, Route de Bouaye, CS4, Bouguenais CEDEX,

    Hornych, Pierre
    The French Institute of Science and Technology for Transport, Development and Networks, Centre de Nantes, Route de Bouaye, CS4, Bouguenais CEDEX,

    Mouhoubi, Saida
    ICube Joint Research Unit 7357, National Center for Scientific Research, National Institute of Applied Sciences de Strasbourg, Université de Strasbourg, Strasbourg CEDEX,

    Doligez, Daniel
    6D Solutions, Sainte Foy lès Lyon,


    Stock #: JTE20180929

    ISSN:0090-3973

    DOI: 10.1520/JTE20180929

    Author
    Title Reproduction of Geogrid In Situ Damage Used in Asphalt Concrete Pavement with Indentation Tests
    Symposium ,
    Committee D04