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    Numerical Investigation of the Bond-Slip Behavior between Double-Helix BFRP Macrofibers and Concrete

    Source: Journal of Materials in Civil Engineering:;2024:;Volume ( 036 ):;issue: 012::page 04024429-1
    Author:
    Chunlei Zhang
    ,
    Xuejie Zhang
    ,
    Honglong Wang
    DOI: 10.1061/JMCEE7.MTENG-18455
    Publisher: American Society of Civil Engineers
    Abstract: Basalt fiber–reinforced polymer (BFRP) is widely used to reinforce concrete due to its high strength, lightweight nature, good corrosion resistance, and low cost. Previous studies have shown that the double-helix BFRP macrofiber has better bond behavior with concrete compared with other types of BFRP fibers. This is attributed to its irregular geometry. The bond-slip behavior between double-helix BFRP macrofiber and concrete is further numerically studied in this study. The corresponding finite-element model is established, and the accuracy of the numerical method is validated by the experimental results based on fiber-matrix pullout tests. The effects of twisted pitches, bundle numbers, and cross-section shapes of the fiber on the bond-slip behavior are extensively investigated and discussed. It is shown by the numerical results that the bond stress and energy-dissipating capacity increase with the decrease of twisted pitches (30, 20, 10, and 5 mm). The bond stress of the fiber with a twisted pitch of 5 mm can be increased by 17.0% at most compared with the fiber with a twisted pitch of 30 mm. Furthermore, it is found that the double-helix BFRP fiber has higher bond stress than the fiber with three or four bundles, with corresponding increases of 11.9% and 16.9%, respectively.
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      Numerical Investigation of the Bond-Slip Behavior between Double-Helix BFRP Macrofibers and Concrete

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    contributor authorChunlei Zhang
    contributor authorXuejie Zhang
    contributor authorHonglong Wang
    date accessioned2025-04-20T10:35:46Z
    date available2025-04-20T10:35:46Z
    date copyright10/3/2024 12:00:00 AM
    date issued2024
    identifier otherJMCEE7.MTENG-18455.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4305025
    description abstractBasalt fiber–reinforced polymer (BFRP) is widely used to reinforce concrete due to its high strength, lightweight nature, good corrosion resistance, and low cost. Previous studies have shown that the double-helix BFRP macrofiber has better bond behavior with concrete compared with other types of BFRP fibers. This is attributed to its irregular geometry. The bond-slip behavior between double-helix BFRP macrofiber and concrete is further numerically studied in this study. The corresponding finite-element model is established, and the accuracy of the numerical method is validated by the experimental results based on fiber-matrix pullout tests. The effects of twisted pitches, bundle numbers, and cross-section shapes of the fiber on the bond-slip behavior are extensively investigated and discussed. It is shown by the numerical results that the bond stress and energy-dissipating capacity increase with the decrease of twisted pitches (30, 20, 10, and 5 mm). The bond stress of the fiber with a twisted pitch of 5 mm can be increased by 17.0% at most compared with the fiber with a twisted pitch of 30 mm. Furthermore, it is found that the double-helix BFRP fiber has higher bond stress than the fiber with three or four bundles, with corresponding increases of 11.9% and 16.9%, respectively.
    publisherAmerican Society of Civil Engineers
    titleNumerical Investigation of the Bond-Slip Behavior between Double-Helix BFRP Macrofibers and Concrete
    typeJournal Article
    journal volume36
    journal issue12
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/JMCEE7.MTENG-18455
    journal fristpage04024429-1
    journal lastpage04024429-11
    page11
    treeJournal of Materials in Civil Engineering:;2024:;Volume ( 036 ):;issue: 012
    contenttypeFulltext
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