Assessment of fibre orientation in ultra high performance fibre reinforced concrete and its effect on flexural strength

S.J. Barnett, J.F. Lataste, T. Parry, S.G. Millard, Marios Soutsos

    Research output: Contribution to journalArticle

    162 Citations (Scopus)

    Abstract

    Fibre distribution and orientation in a series of round panel specimens of ultra high performance fibre reinforced concrete (UHPFRC) was investigated using electrical resistivity measurements and confirmed by X-ray CT imaging. By pouring specimens in different ways, the orientation of steel fibres was influenced and the sensitivity of the electrical resistivity technique was investigated. The round panels were tested in flexure and the results are discussed in relation to the observed orientation of fibres in the panels. It was found that the fibres tended to align perpendicular to the direction of flow. As a result, panels poured from the centre were significantly stronger than panels poured by other methods because the alignment of fibres led to more fibres bridging the radial cracks formed during mechanical testing.
    Original languageEnglish
    Pages (from-to)1009-1023
    Number of pages15
    JournalRILEM Materials and Structures
    Volume43
    Issue number7
    DOIs
    Publication statusPublished - Aug 2010

    ASJC Scopus subject areas

    • Civil and Structural Engineering
    • Mechanics of Materials
    • Building and Construction
    • Materials Science(all)

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