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    Influence of Cementitious Material Infiltration on Piezoresistive Effect of Carbon Fiber Bundle

    Source: Journal of Materials in Civil Engineering:;2023:;Volume ( 035 ):;issue: 007::page 04023173-1
    Author:
    Yifei Gong
    ,
    Zhiyu Xie
    ,
    Guanhao Chen
    ,
    Dawei Zhang
    DOI: 10.1061/JMCEE7.MTENG-14701
    Publisher: American Society of Civil Engineers
    Abstract: The piezoresistive effect of carbon fibers has been successfully applied to monitor or assess the stress–strain state of carbon fiber–reinforced polymers (CFRPs). There are insufficient studies on the piezoresistive effect of carbon fabric–reinforced cementitious matrices (CFRCMs). However, the influence of mortar infiltration cannot be ignored. In this study, the piezoresistive effects of dry carbon fiber bundles, CFRP bundles, and CFRCM bundles were compared. The condition of contacting filaments was observed by electron microscopy. Before loading, the epoxy resin had little effect on the contact, and the mortar separated many contacting filaments. Therefore, the CFRP bundles and dry carbon fiber bundles have similar initial resistances, while the CFRCM bundles have a larger initial resistance. During tension, the contact ratio of CFRCM bundles decreases due to mortar infiltration, and it improves the sensitivity to tensile fracture. However, this infiltration is nonuniform, which can only affect the piezoresistive effect of the sleeve layer. Almost every core filament can contact the surrounding filaments, and the contribution of core filaments to the piezoresistive effect is negligible. The result shows that the relative resistance change of the CFRCM in the failure stage is smaller than that of the CFRP, and the curves are more discrete.
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      Influence of Cementitious Material Infiltration on Piezoresistive Effect of Carbon Fiber Bundle

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    contributor authorYifei Gong
    contributor authorZhiyu Xie
    contributor authorGuanhao Chen
    contributor authorDawei Zhang
    date accessioned2023-08-16T19:13:50Z
    date available2023-08-16T19:13:50Z
    date issued2023/07/01
    identifier otherJMCEE7.MTENG-14701.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4292968
    description abstractThe piezoresistive effect of carbon fibers has been successfully applied to monitor or assess the stress–strain state of carbon fiber–reinforced polymers (CFRPs). There are insufficient studies on the piezoresistive effect of carbon fabric–reinforced cementitious matrices (CFRCMs). However, the influence of mortar infiltration cannot be ignored. In this study, the piezoresistive effects of dry carbon fiber bundles, CFRP bundles, and CFRCM bundles were compared. The condition of contacting filaments was observed by electron microscopy. Before loading, the epoxy resin had little effect on the contact, and the mortar separated many contacting filaments. Therefore, the CFRP bundles and dry carbon fiber bundles have similar initial resistances, while the CFRCM bundles have a larger initial resistance. During tension, the contact ratio of CFRCM bundles decreases due to mortar infiltration, and it improves the sensitivity to tensile fracture. However, this infiltration is nonuniform, which can only affect the piezoresistive effect of the sleeve layer. Almost every core filament can contact the surrounding filaments, and the contribution of core filaments to the piezoresistive effect is negligible. The result shows that the relative resistance change of the CFRCM in the failure stage is smaller than that of the CFRP, and the curves are more discrete.
    publisherAmerican Society of Civil Engineers
    titleInfluence of Cementitious Material Infiltration on Piezoresistive Effect of Carbon Fiber Bundle
    typeJournal Article
    journal volume35
    journal issue7
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/JMCEE7.MTENG-14701
    journal fristpage04023173-1
    journal lastpage04023173-11
    page11
    treeJournal of Materials in Civil Engineering:;2023:;Volume ( 035 ):;issue: 007
    contenttypeFulltext
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