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    Experimental Investigation of Pullout Behavior of Fiber-Reinforced Polymer Reinforcements in Sand

    Source: Journal of Composites for Construction:;2015:;Volume ( 019 ):;issue: 003
    Author:
    Cheng-Cheng Zhang
    ,
    Hong-Hu Zhu
    ,
    Bin Shi
    ,
    Fang-Dong Wu
    ,
    Jian-Hua Yin
    DOI: 10.1061/(ASCE)CC.1943-5614.0000526
    Publisher: American Society of Civil Engineers
    Abstract: Fiber-reinforced polymer (FRP) bars and strips are potential alternatives to conventional soil reinforcements. In this aspect, two commonly used FRP materials are glass-FRP and carbon-FRP (GFRP and CFRP). However, the differences in pullout behavior between soil-embedded GFRP and CFRP rods, and conventional steel bars, are not well understood. This paper describes the results of an experimental study that was conducted to investigate the behavior of FRP bar/strip-sand interfaces under low normal pressure. A series of pullout tests were performed on GFRP and CFRP bars and strips buried in sand. A simple model using the ideal elastoplastic interface shear stress-strain relationship is proposed to simulate the pullout behavior of the FRP reinforcements. The progressive pullout process and the evolution of interface shear stress distribution are obtained from the proposed model. The experimental and analytical results show that, in comparison with CFRP and steel reinforcements, the GFRP reinforcement has a more nonlinear and nonuniform distribution of interface shear stress, and the pullout is more progressive. The differences in Young’s modulus and interface shear coefficient lead to the different pullout behaviors of these three materials. The reduced Young’s modulus gives GFRP reinforcements a risk of excessive tensile elongation and bending deflection. The test results show that the progressive pullout behavior is also governed by the reinforcement dimensions.
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      Experimental Investigation of Pullout Behavior of Fiber-Reinforced Polymer Reinforcements in Sand

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    http://yetl.yabesh.ir/yetl1/handle/yetl/72101
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    contributor authorCheng-Cheng Zhang
    contributor authorHong-Hu Zhu
    contributor authorBin Shi
    contributor authorFang-Dong Wu
    contributor authorJian-Hua Yin
    date accessioned2017-05-08T22:08:18Z
    date available2017-05-08T22:08:18Z
    date copyrightJune 2015
    date issued2015
    identifier other31855195.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/72101
    description abstractFiber-reinforced polymer (FRP) bars and strips are potential alternatives to conventional soil reinforcements. In this aspect, two commonly used FRP materials are glass-FRP and carbon-FRP (GFRP and CFRP). However, the differences in pullout behavior between soil-embedded GFRP and CFRP rods, and conventional steel bars, are not well understood. This paper describes the results of an experimental study that was conducted to investigate the behavior of FRP bar/strip-sand interfaces under low normal pressure. A series of pullout tests were performed on GFRP and CFRP bars and strips buried in sand. A simple model using the ideal elastoplastic interface shear stress-strain relationship is proposed to simulate the pullout behavior of the FRP reinforcements. The progressive pullout process and the evolution of interface shear stress distribution are obtained from the proposed model. The experimental and analytical results show that, in comparison with CFRP and steel reinforcements, the GFRP reinforcement has a more nonlinear and nonuniform distribution of interface shear stress, and the pullout is more progressive. The differences in Young’s modulus and interface shear coefficient lead to the different pullout behaviors of these three materials. The reduced Young’s modulus gives GFRP reinforcements a risk of excessive tensile elongation and bending deflection. The test results show that the progressive pullout behavior is also governed by the reinforcement dimensions.
    publisherAmerican Society of Civil Engineers
    titleExperimental Investigation of Pullout Behavior of Fiber-Reinforced Polymer Reinforcements in Sand
    typeJournal Paper
    journal volume19
    journal issue3
    journal titleJournal of Composites for Construction
    identifier doi10.1061/(ASCE)CC.1943-5614.0000526
    treeJournal of Composites for Construction:;2015:;Volume ( 019 ):;issue: 003
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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