A Scanning Device to Quantify Joint Surface Roughness

    Volume 8, Issue 3 (September 1985)

    ISSN: 0149-6115


    Page Count: 8

    Lam, TSK
    Site engineer, Mass Rapid Transit Corporation,

    Johnston, IW
    Senior lecturer, Monash University, Clayton, Victoria,


    The shear strength characteristics of rock joints are highly dependent on the roughness of the joint surfaces. However, roughness is a relative term and current methods of describing roughness in quantitative terms are generally not suited to detailed analytical scrutiny. In connection with an investigation into the development of side shear resistance in rough rock socketed piles, a scanning device, which was automatic and free from operator subjectivity, was developed to provide detailed measurements of surface roughness of joint samples obtained in situ. The data collected were suitable for statistical analysis so that surface roughness could be uniquely quantified. The design and operation of the device is described, and an example of scanning is presented.

    Paper ID: GTJ10522J

    DOI: 10.1520/GTJ10522J

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    Title A Scanning Device to Quantify Joint Surface Roughness
    Symposium , 0000-00-00
    Committee D18