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    Experimental investigation on lightweight rubberized concrete beams strengthened with BFRP sheets subjected to impact loads

    91507.pdf (361.3Kb)
    Access Status
    Open access
    Authors
    Pham, Thong
    Chen, Wensu
    Elchalakani, M.
    Karrech, A.
    Hao, Hong
    Date
    2020
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Pham, T.M. and Chen, W. and Elchalakani, M. and Karrech, A. and Hao, H. 2020. Experimental investigation on lightweight rubberized concrete beams strengthened with BFRP sheets subjected to impact loads. Engineering Structures. 205: ARTN 110095.
    Source Title
    Engineering Structures
    DOI
    10.1016/j.engstruct.2019.110095
    ISSN
    0141-0296
    Faculty
    Faculty of Science and Engineering
    School
    School of Civil and Mechanical Engineering
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/LP150100259
    URI
    http://hdl.handle.net/20.500.11937/91683
    Collection
    • Curtin Research Publications
    Abstract

    This study experimentally investigates the impact behaviour of rubberized concrete beams strengthened with basalt fiber reinforced polymer (BFRP). Twelve reinforced concrete beams, which consisted of different rubber contents (0%, 15%, and 30%), were tested under impact loads. Various wrapping schemes were considered to determine the most effective strengthening schemes for impact resistance performance of both the conventional and rubberized concrete beams. The experimental results have shown that rubberized concrete had 10–18% higher imparted energy per unit weight than that of normal concrete. The rubberized concrete beams localized the damage at the impacted area and slowed down the stress wave velocity. Although rubberized concrete materials possessed lower compressive strength (50.3 MPa, 25.4 MPa and 14.7 MPa for concrete with 0%, 15% and 30% rubber content, respectively), they yielded less displacement as compared to the reference beams under the same impact. The rubberized concrete beams experienced a lower peak impact force under the same impact. Meanwhile, the use of U-shape BFRP wraps concentrating at the impacted area showed similar performance as those with BFRP wraps uniformly distributed along the entire beam, therefore, this proposed strengthening scheme provides a cheaper solution for strengthening concrete structures.

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