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    Concrete Bedding Effect on the Behavior of Buried Concrete Pipe: Experimental Investigation

    Source: Journal of Pipeline Systems Engineering and Practice:;2024:;Volume ( 015 ):;issue: 004::page 04024037-1
    Author:
    Abbas O. Dawood
    ,
    Mosa J. Al-Mosawe
    ,
    AbdulMuttalib I. Said
    DOI: 10.1061/JPSEA2.PSENG-1561
    Publisher: American Society of Civil Engineers
    Abstract: Concrete pipes both reinforced and unreinforced still serve as efficient subsurface infrastructure, especially when used as culverts and sewer lines. In which its structural performance greatly affected by pipe-soil interaction through installation types. In this study the effect of concrete bedding on the behavior of buried unreinforced concrete pipe is investigated through full-scale experimental testing program which the concrete pipes are embedded in gravelly sand soil that is loose and dense. With thickness of 30 cm over pipe crown and subjected to different surface loadings. Seven standard 300 mm internal diameter precast unreinforced concrete pipes were evaluated in a lab soil box test facility. Two loading conditions are used, namely earth fill that simulated by a uniform loading platform, and wheel load that simulated using a patch loading platform with dimensions of 254×508  mm2 (10×20  in.2), which is used by AASHTO to mimic the wheel load of an HS20 truck. The results demonstrated that controlled installation utilizing dense compaction granular backfill could achieve 70% of the pipe strength acquired by employing the typical concrete bedding of the indirect design approach. For concrete bedding under patch loads, the greatest bedding factor (ratio between the supporting strength of buried concrete pipe to the three-edge bearing test strength) obtained is 4.53. The failure loads of pipes with concrete bedding is greater than pipes with compacted soil bedding by 30% for uniform loading and 43% for patch loading.
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      Concrete Bedding Effect on the Behavior of Buried Concrete Pipe: Experimental Investigation

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    contributor authorAbbas O. Dawood
    contributor authorMosa J. Al-Mosawe
    contributor authorAbdulMuttalib I. Said
    date accessioned2024-12-24T10:00:32Z
    date available2024-12-24T10:00:32Z
    date copyright11/1/2024 12:00:00 AM
    date issued2024
    identifier otherJPSEA2.PSENG-1561.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4298122
    description abstractConcrete pipes both reinforced and unreinforced still serve as efficient subsurface infrastructure, especially when used as culverts and sewer lines. In which its structural performance greatly affected by pipe-soil interaction through installation types. In this study the effect of concrete bedding on the behavior of buried unreinforced concrete pipe is investigated through full-scale experimental testing program which the concrete pipes are embedded in gravelly sand soil that is loose and dense. With thickness of 30 cm over pipe crown and subjected to different surface loadings. Seven standard 300 mm internal diameter precast unreinforced concrete pipes were evaluated in a lab soil box test facility. Two loading conditions are used, namely earth fill that simulated by a uniform loading platform, and wheel load that simulated using a patch loading platform with dimensions of 254×508  mm2 (10×20  in.2), which is used by AASHTO to mimic the wheel load of an HS20 truck. The results demonstrated that controlled installation utilizing dense compaction granular backfill could achieve 70% of the pipe strength acquired by employing the typical concrete bedding of the indirect design approach. For concrete bedding under patch loads, the greatest bedding factor (ratio between the supporting strength of buried concrete pipe to the three-edge bearing test strength) obtained is 4.53. The failure loads of pipes with concrete bedding is greater than pipes with compacted soil bedding by 30% for uniform loading and 43% for patch loading.
    publisherAmerican Society of Civil Engineers
    titleConcrete Bedding Effect on the Behavior of Buried Concrete Pipe: Experimental Investigation
    typeJournal Article
    journal volume15
    journal issue4
    journal titleJournal of Pipeline Systems Engineering and Practice
    identifier doi10.1061/JPSEA2.PSENG-1561
    journal fristpage04024037-1
    journal lastpage04024037-13
    page13
    treeJournal of Pipeline Systems Engineering and Practice:;2024:;Volume ( 015 ):;issue: 004
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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