Effect of sample preparation on the behaviour of fibre reinforced sands

A. Diambra, E. Ibraim, David Muir Wood, Y. Bennanni, A. R. Russell

    Research output: Chapter in Book/Report/Conference proceedingConference contribution


    The concept of reinforcing soils by introducing tension resisting elements such as flexible, discrete fibres is becoming widely accepted by geotechnical engineers. The effectiveness of fibre inclusion is largely dependent on their spatial orientation which, in turn, depends on the fabrication procedure. The most common fabrication method used so far is the moist tamping technique but recent research has shown that this preparation procedure leads to preferred near-horizontal orientation of the fibres. A new specimen fabrication procedure using vibration is proposed here and the uniformity of the spatial orientation distribution of fibres is assessed. While the uniformity of distribution of vibrated fibre reinforced specimens improves, the fibre orientation pattern was found to remain highly anisotropic with a nearly-horizontal distribution. Triaxial compression and extension test results show and confirm the importance of fibre orientation as a key parameter which has to be considered for the design of the fibre reinforced geotechnical structures.

    Original languageEnglish
    Title of host publicationDeformational characteristics of geomaterials, Vols 1 and 2
    EditorsSusan E. Burns, Paul W. Mayne, J. Carlos Santamarina
    Place of PublicationAmsterdam
    PublisherI O S PRESS
    Number of pages8
    ISBN (Print)9781586039080
    Publication statusPublished - 2008
    Event4th International Symposium on Deformation Characteristics of Geomaterials - Atlanta, United States
    Duration: 21 Sept 200824 Sept 2008


    Conference4th International Symposium on Deformation Characteristics of Geomaterials
    Country/TerritoryUnited States
    Internet address


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