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    Shear Friction in Single-Generation and Multigeneration Recycled Aggregate Concrete

    Source: Journal of Materials in Civil Engineering:;2025:;Volume ( 037 ):;issue: 003::page 04024551-1
    Author:
    Lloyd Dadd
    ,
    Tianyu Xie
    ,
    Bree Bennett
    ,
    Phillip Visintin
    DOI: 10.1061/JMCEE7.MTENG-18716
    Publisher: American Society of Civil Engineers
    Abstract: Knowledge of shear friction material properties is central to the design of reinforced concrete elements. These shear friction properties are impacted by components of concrete mix design that impact the roughness of a cracked plane, including the strength of the mortar and aggregates. In this paper, 72 shear friction tests are undertaken on multigeneration recycled aggregate concrete that successively crushes and reuses concrete to make three generations of aggregate. The results of these tests are brought together with 314 existing shear friction test results on virgin and recycled aggregate concrete to develop a new unified model to predict the shear capacity of initially uncracked concrete. The results of the modeling show that even after multiple generations of recycling aggregate, no significant decline occurs in the shear strength of concrete and that the shear strength is most strongly influenced by the confining stress. The analysis of the test results across multiple studies identifies critical areas for future research, including the need for better reporting of actual confining stresses and the reporting of crack widths to allow for a more complete understanding of behavior.
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      Shear Friction in Single-Generation and Multigeneration Recycled Aggregate Concrete

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4303898
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    contributor authorLloyd Dadd
    contributor authorTianyu Xie
    contributor authorBree Bennett
    contributor authorPhillip Visintin
    date accessioned2025-04-20T10:02:59Z
    date available2025-04-20T10:02:59Z
    date copyright12/30/2024 12:00:00 AM
    date issued2025
    identifier otherJMCEE7.MTENG-18716.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4303898
    description abstractKnowledge of shear friction material properties is central to the design of reinforced concrete elements. These shear friction properties are impacted by components of concrete mix design that impact the roughness of a cracked plane, including the strength of the mortar and aggregates. In this paper, 72 shear friction tests are undertaken on multigeneration recycled aggregate concrete that successively crushes and reuses concrete to make three generations of aggregate. The results of these tests are brought together with 314 existing shear friction test results on virgin and recycled aggregate concrete to develop a new unified model to predict the shear capacity of initially uncracked concrete. The results of the modeling show that even after multiple generations of recycling aggregate, no significant decline occurs in the shear strength of concrete and that the shear strength is most strongly influenced by the confining stress. The analysis of the test results across multiple studies identifies critical areas for future research, including the need for better reporting of actual confining stresses and the reporting of crack widths to allow for a more complete understanding of behavior.
    publisherAmerican Society of Civil Engineers
    titleShear Friction in Single-Generation and Multigeneration Recycled Aggregate Concrete
    typeJournal Article
    journal volume37
    journal issue3
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/JMCEE7.MTENG-18716
    journal fristpage04024551-1
    journal lastpage04024551-12
    page12
    treeJournal of Materials in Civil Engineering:;2025:;Volume ( 037 ):;issue: 003
    contenttypeFulltext
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