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    Experimental study on the mechanical behavior of polypropylene fibre reinforced concrete subjected to monotonic loads

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    Date
    2021
    Author
    Nuñez Castellanos, Eduardo
    Torres Moreno, Ronald
    Ligas Fonseca, Salvador
    Bustamante Laissle, Guillermo
    Maureira Carsalade, Nelson
    Roco Videla, Angel
    Publisher
    Latin American journal of solids struct
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    Abstract
    The properties of fibre reinforced concrete were studied under monotonic loads according to Japanese, North American and European codes. Two different types of SIKA polypropylene fibre were with different dosages. One hundred and eighty tests were performed, obtaining resistance to compression, tension, bending, toughness, and energy absorption in the hardened state. The results show that the addition of fibres affects the workability of the concrete mix. The increase in fibre dosage does not affect compressive, tensile, or flexural strength. However, the failure changes from brittle to more ductile, allowing it to reach residual strengths of 50% of the maximum reached and 200% deformation. The dissipated energy increased with increasing fibre dosage. The performance achieved by both fibres was similar, although the optimal dosage was 6 kg/m3 for type A fibres and 8 kg /m3 for type B. Therefore, the replacement of flexural reinforcing steel in the foundation slabs of one-story buildings can be performed if adequate dosages are used in compliance with established analytical procedures for industrial floor design.
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    http://repositoriodigital.ucsc.cl/handle/25022009/3174
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