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    Volume 49, Issue 6 (February 2021)

    Effects of BFRP Bar Diameter and Cover Thickness on Fracture Behavior of BFRP Bar–Reinforced Ecological High-Ductility Cementitious Composites

    (Received 19 August 2020; accepted 8 October 2020)

    Published Online: 04 February 2021

    CODEN: JTEVAB

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    Abstract

    To obtain the design parameters of bridge deck link slabs made of ecological high-ductility cementitious composite (Eco-HDCC) material reinforced with a basalt fiber-reinforced plastic (BFRP) by applying fracture mechanics concepts, the reinforcing effects of a BFRP bar on the fracture properties of BFRP bar–reinforced Eco-HDCC specimens were studied. First, cracking load, crack mouth opening displacement (CMOD), and deflection of specimens were monitored, and BFRP bar diameter and cover thickness were considered. The results indicate that both the diameter and cover thickness of BFRP bar have an obvious influence on the crack kinking angle. In addition, as the diameter of BFRP bar increases, the peak load, peak CMOD, peak deflection, and fracture energy of Eco-HDCC specimens increase, and these peak values of Eco-HDCC specimens after reloading also show the same trend. In addition, the peak load, peak CMOD, peak deflection, and fracture energy are larger if the Eco-HDCC specimen has a smaller cover thickness. However, the Eco-HDCC specimen with a BFRP bar cover thickness of 25 mm has a higher peak load after reloading than the specimen with a cover thickness of 15 mm when the bar diameters are 10 and 12 mm, respectively. In conclusion, BFRP bar diameters from 10 to 14 mm and a cover thickness of 25 mm are recommended when designing bridge deck link slabs.

    Author Information:

    Chai, Li-Juan
    School of Materials Science and Engineering, Southeast University, Nanjing,

    Guo, Li-Ping
    School of Materials Science and Engineering, Southeast University, Nanjing,

    Jiangsu Key Laboratory of Construction Materials, Collaborative Innovation Center for Advanced Civil Engineering Materials, Nanjing,

    Chen, Bo
    State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing,

    Carpinteri, Andrea
    Department of Engineering and Architecture, University of Parma, Parma,

    Scorza, Daniela
    Department of Engineering, University of Naples Parthenope, Naples,

    Vantadori, Sabrina
    Department of Engineering and Architecture, University of Parma, Parma,


    Stock #: JTE20200528

    ISSN:0090-3973

    DOI: 10.1520/JTE20200528

    Author
    Title Effects of BFRP Bar Diameter and Cover Thickness on Fracture Behavior of BFRP Bar–Reinforced Ecological High-Ductility Cementitious Composites
    Symposium ,
    Committee C09