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    Compressive Behavior of CFRP-Confined Recycled Aggregate Concrete in Different-Sized Circular Sections

    Source: Journal of Composites for Construction:;2018:;Volume ( 022 ):;issue: 004
    Author:
    Chen G. M.;Zhang J. J.;Jiang T.;Lin C. J.;He Y. H.
    DOI: 10.1061/(ASCE)CC.1943-5614.0000859
    Publisher: American Society of Civil Engineers
    Abstract: Structural applications of recycled aggregate concrete (RAC) have been rare in practice owing to its inferior strength and durability compared with natural aggregate concrete (NAC). Among the various methods attempted to facilitate the wider structural applications of RAC, the newly proposed method of fiber reinforced polymer (FRP) jacketing is particularly attractive due to the dual benefits of confinement and corrosion insulation. The few relevant studies on FRP-confined RAC have all been conducted on relatively small-scale specimens with no attention being paid to the possible size effect. This paper presents a series of axial compression tests on carbon FRP (CFRP)-confined RAC/NAC cylinders at three different scales with diameters ranging from 15 to 3 mm. In particular, some different-sized specimens were designed to have the same FRP confinement stiffness to allow for the first-ever examination of the possible size effect in FRP-confined RAC. The test results indicate that no appreciable size effect appears to exist in FRP-confined RAC or in FRP-confined NAC in the size range considered. The test results also show that FRP confinement effectiveness is marginally affected by the use of recycled aggregate. The compressive behavior of the two types of concrete can be almost equally well predicted by using stress-strain models originally proposed for FRP-confined NAC.
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      Compressive Behavior of CFRP-Confined Recycled Aggregate Concrete in Different-Sized Circular Sections

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    contributor authorChen G. M.;Zhang J. J.;Jiang T.;Lin C. J.;He Y. H.
    date accessioned2019-02-26T07:38:39Z
    date available2019-02-26T07:38:39Z
    date issued2018
    identifier other%28ASCE%29CC.1943-5614.0000859.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4248462
    description abstractStructural applications of recycled aggregate concrete (RAC) have been rare in practice owing to its inferior strength and durability compared with natural aggregate concrete (NAC). Among the various methods attempted to facilitate the wider structural applications of RAC, the newly proposed method of fiber reinforced polymer (FRP) jacketing is particularly attractive due to the dual benefits of confinement and corrosion insulation. The few relevant studies on FRP-confined RAC have all been conducted on relatively small-scale specimens with no attention being paid to the possible size effect. This paper presents a series of axial compression tests on carbon FRP (CFRP)-confined RAC/NAC cylinders at three different scales with diameters ranging from 15 to 3 mm. In particular, some different-sized specimens were designed to have the same FRP confinement stiffness to allow for the first-ever examination of the possible size effect in FRP-confined RAC. The test results indicate that no appreciable size effect appears to exist in FRP-confined RAC or in FRP-confined NAC in the size range considered. The test results also show that FRP confinement effectiveness is marginally affected by the use of recycled aggregate. The compressive behavior of the two types of concrete can be almost equally well predicted by using stress-strain models originally proposed for FRP-confined NAC.
    publisherAmerican Society of Civil Engineers
    titleCompressive Behavior of CFRP-Confined Recycled Aggregate Concrete in Different-Sized Circular Sections
    typeJournal Paper
    journal volume22
    journal issue4
    journal titleJournal of Composites for Construction
    identifier doi10.1061/(ASCE)CC.1943-5614.0000859
    page4018021
    treeJournal of Composites for Construction:;2018:;Volume ( 022 ):;issue: 004
    contenttypeFulltext
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