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    Flexural Capacity Prediction of Corroded Prestressed Concrete Beams Incorporating Bond Degradation

    Source: Journal of Aerospace Engineering:;2019:;Volume ( 032 ):;issue: 004
    Author:
    Lizhao Dai
    ,
    Lei Wang
    ,
    Hanbing Bian
    ,
    Jianren Zhang
    ,
    Xuhui Zhang
    ,
    Yafei Ma
    DOI: 10.1061/(ASCE)AS.1943-5525.0001022
    Publisher: American Society of Civil Engineers
    Abstract: Strand corrosion can cause the flexural capacity deterioration of prestressed concrete (PC) beams. An analytical model incorporating the effects of strand cross-section reduction, material deterioration, concrete cracking, and bond degradation is proposed to predict the flexural capacity of corroded PC beams. The effect of flexural cracks is also included in the model. An equivalent bond stress concept is introduced to consider the effect of flexural cracks, which is further implemented into the flexural capacity prediction of corroded PC beams. The proposed model is validated by the experimental results collected from the previous studies. Results show that the proposed model can give an accurate prediction for the flexural capacity of corroded PC beams. Considering the effect of flexural cracks can improve the precision of the prediction model. The flexural capacity deterioration of PC beams depends on corrosion degree. Strand corrosion less than 5.5% can lead to a slight decrement of flexural capacity. As corrosion progresses the flexural capacity would exhibit a significant deterioration.
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      Flexural Capacity Prediction of Corroded Prestressed Concrete Beams Incorporating Bond Degradation

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4259779
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    contributor authorLizhao Dai
    contributor authorLei Wang
    contributor authorHanbing Bian
    contributor authorJianren Zhang
    contributor authorXuhui Zhang
    contributor authorYafei Ma
    date accessioned2019-09-18T10:38:53Z
    date available2019-09-18T10:38:53Z
    date issued2019
    identifier other%28ASCE%29AS.1943-5525.0001022.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4259779
    description abstractStrand corrosion can cause the flexural capacity deterioration of prestressed concrete (PC) beams. An analytical model incorporating the effects of strand cross-section reduction, material deterioration, concrete cracking, and bond degradation is proposed to predict the flexural capacity of corroded PC beams. The effect of flexural cracks is also included in the model. An equivalent bond stress concept is introduced to consider the effect of flexural cracks, which is further implemented into the flexural capacity prediction of corroded PC beams. The proposed model is validated by the experimental results collected from the previous studies. Results show that the proposed model can give an accurate prediction for the flexural capacity of corroded PC beams. Considering the effect of flexural cracks can improve the precision of the prediction model. The flexural capacity deterioration of PC beams depends on corrosion degree. Strand corrosion less than 5.5% can lead to a slight decrement of flexural capacity. As corrosion progresses the flexural capacity would exhibit a significant deterioration.
    publisherAmerican Society of Civil Engineers
    titleFlexural Capacity Prediction of Corroded Prestressed Concrete Beams Incorporating Bond Degradation
    typeJournal Paper
    journal volume32
    journal issue4
    journal titleJournal of Aerospace Engineering
    identifier doi10.1061/(ASCE)AS.1943-5525.0001022
    page04019027
    treeJournal of Aerospace Engineering:;2019:;Volume ( 032 ):;issue: 004
    contenttypeFulltext
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