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    Volume 40, Issue 5 (September 2017)

    The Effects of Installation Procedure on Bond Characteristics of Fully Grouted Rock Bolts

    (Received 19 September 2016; accepted 24 February 2017)

    Published Online: 2017

    CODEN: GTJODJ

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    Abstract

    The bond characteristics of fully grouted rockbolts installed in steel tubes were investigated by bolt push tests. Steel tubes were inserted in a mine roadway roof to represent the confinement of rock boreholes. Rockbolts were installed in tubes using the installation technique of Australian underground mines. These tubes, with rockbolts inside, were retrieved from the field and brought back to the laboratory to be cut into 100-mm sections, which were then push tested. It was found that each bolt section had a distinct load-displacement profile, and that bond strength varied significantly along the bolt length. The factors influencing the bond strength of rockbolts were identified. The influence of the installation procedure on the bond strength of bolts in tubes was investigated.

    Author Information:

    Ma, Shuqi

    Aziz, Naj
    School of Civil, Mining and Environmental Engineering, University of Wollongong, Wollongong

    Nemcik, Jan
    School of Civil, Mining and Environmental Engineering, University of Wollongong,

    Mirzaghorbanali, Ali
    School of Civil, Mining and Environmental Engineering, University of Wollongong,


    Stock #: GTJ20160239

    ISSN:0149-6115

    DOI: 10.1520/GTJ20160239

    Author
    Title The Effects of Installation Procedure on Bond Characteristics of Fully Grouted Rock Bolts
    Symposium ,
    Committee D18