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    Statistical variations in impact resistance of polypropylene fibre-reinforced concrete.

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    Publication date
    2006-11
    Author
    Badr, A.
    Ashour, Ashraf F.
    Platten, A.K.
    Keyword
    Fibres; Polypropylene; Statistical variation; Impact resistance
    Rights
    © 2006 Elsevier. Reproduced in accordance with the publisher's self-archiving policy.
    Peer-Reviewed
    yes
    
    Metadata
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    Abstract
    Impact resistance of polypropylene fibre-reinforced concrete was investigated using the repeated drop weight impact test recommended by ACI Committee 544. The results were analysed based on a statistical approach. The variation in results was examined within the same batch and between different batches. Statistical parameters were compared with reported variations in impact resistance of concrete composites reinforced with other types of fibres such as carbon and steel fibres. Statistical analysis indicated that the results obtained from this test had large variations and it is necessary to increase the number of replications to at least 40 specimens per concrete mix to assure an error below 10%. It is concluded that this test with its current procedures and recommendations should not be considered a reliable impact test. This study has highlighted the need for modifying this test in such a way as that increases its accuracy and reduces the large variation in results.
    URI
    http://hdl.handle.net/10454/7670
    Version
    Accepted Manuscript
    Citation
    Badr, A., Ashour, A. F. and Platten, A. K. (2006) Statistical variations in impact resistance of polypropylene fibre-reinforced concrete. International Journal of Impact Engineering, Vol. 32, No. 11, pp. 1907-1920.
    Link to publisher’s version
    http://dx.doi.org/10.1016/j.ijimpeng.2005.05.003
    Type
    Article
    Collections
    Engineering and Informatics Publications

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