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    Concrete Walls with Cutout Openings Strengthened by FRP Confinement

    Source: Journal of Composites for Construction:;2017:;Volume ( 021 ):;issue: 003
    Author:
    Cosmin Popescu
    ,
    Gabriel Sas
    ,
    Thomas Blanksvärd
    ,
    Björn Täljsten
    DOI: 10.1061/(ASCE)CC.1943-5614.0000759
    Publisher: American Society of Civil Engineers
    Abstract: Redesigning buildings to improve their space efficiency and allow changes in use is often essential during their service lives to comply with shifts in living standards and functional demands. This may require the introduction of new openings in elements such as beams, walls, and slabs, which inevitably reduces their structural performance and hence requires repair or strengthening. However, there are uncertainties regarding both the effects of openings and the best remedial options for them. Here, the authors report on an experimental investigation of the effectiveness of fiber-reinforced polymer (FRP)–based strengthening for restoring the axial capacity of a solid RC wall after cutting openings. Nine half-scale specimens, designed to represent typical wall panels in residential buildings with and without door-type openings, were tested to failure. It was found that FRP-confinement and mechanical anchorages increased the axial capacity of walls with small and large openings (which had 25 and 50% reductions in cross-sectional area, respectively) by 34–50% and 13–27%, to 85–94.8% and 56.5–63.4% of their precutting capacity, respectively.
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      Concrete Walls with Cutout Openings Strengthened by FRP Confinement

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4245400
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    contributor authorCosmin Popescu
    contributor authorGabriel Sas
    contributor authorThomas Blanksvärd
    contributor authorBjörn Täljsten
    date accessioned2017-12-30T13:04:50Z
    date available2017-12-30T13:04:50Z
    date issued2017
    identifier other%28ASCE%29CC.1943-5614.0000759.pdf
    identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4245400
    description abstractRedesigning buildings to improve their space efficiency and allow changes in use is often essential during their service lives to comply with shifts in living standards and functional demands. This may require the introduction of new openings in elements such as beams, walls, and slabs, which inevitably reduces their structural performance and hence requires repair or strengthening. However, there are uncertainties regarding both the effects of openings and the best remedial options for them. Here, the authors report on an experimental investigation of the effectiveness of fiber-reinforced polymer (FRP)–based strengthening for restoring the axial capacity of a solid RC wall after cutting openings. Nine half-scale specimens, designed to represent typical wall panels in residential buildings with and without door-type openings, were tested to failure. It was found that FRP-confinement and mechanical anchorages increased the axial capacity of walls with small and large openings (which had 25 and 50% reductions in cross-sectional area, respectively) by 34–50% and 13–27%, to 85–94.8% and 56.5–63.4% of their precutting capacity, respectively.
    publisherAmerican Society of Civil Engineers
    titleConcrete Walls with Cutout Openings Strengthened by FRP Confinement
    typeJournal Paper
    journal volume21
    journal issue3
    journal titleJournal of Composites for Construction
    identifier doi10.1061/(ASCE)CC.1943-5614.0000759
    page04016106
    treeJournal of Composites for Construction:;2017:;Volume ( 021 ):;issue: 003
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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