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    Effect of Low-Quality Recycled Concrete Aggregate on Stabilized Clay Properties

    Source: Journal of Materials in Civil Engineering:;2020:;Volume ( 032 ):;issue: 008
    Author:
    Masoumeh Tavakol
    ,
    Stacey Kulesza
    ,
    Christopher Jones
    ,
    Mustaque Hossain
    DOI: 10.1061/(ASCE)MT.1943-5533.0003263
    Publisher: ASCE
    Abstract: Recycled concrete aggregate (RCA) is the result of the demolition of concrete structures and pavements. Using RCA to replace quarried aggregates in paving projects is one way to utilize the millions of tons of concrete waste that is produced annually and landfilled. However, RCA may have inferior physical properties when compared to virgin aggregates, such as the presence of recycled mortar and preexisting deficiencies. This study evaluated the potential use of RCA from D-cracked pavement for soil stabilization. D-cracking is a type of pavement deterioration that originates in the coarse aggregate particles due to freezing and thawing. The engineering properties of low-plasticity clay with RCA and three common regional stabilizers (i.e., lime, Class C fly ash, and a combination of portland cement and fly ash) were investigated. Clay mixtures with varying proportions of chemical stabilizers and RCA from D-cracked pavements were evaluated by comparing measured unconfined compressive strength, linear shrinkage, and the California bearing ratio. Laboratory test results indicated that RCA, in conjunction with all cementitious materials, except lime, improved clay strength, stiffness, and shrinkage properties. The results from this study highlight that RCA from D-cracked pavements can be used for clay subgrade stabilization.
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      Effect of Low-Quality Recycled Concrete Aggregate on Stabilized Clay Properties

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4267196
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    contributor authorMasoumeh Tavakol
    contributor authorStacey Kulesza
    contributor authorChristopher Jones
    contributor authorMustaque Hossain
    date accessioned2022-01-30T20:49:47Z
    date available2022-01-30T20:49:47Z
    date issued8/1/2020 12:00:00 AM
    identifier other%28ASCE%29MT.1943-5533.0003263.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4267196
    description abstractRecycled concrete aggregate (RCA) is the result of the demolition of concrete structures and pavements. Using RCA to replace quarried aggregates in paving projects is one way to utilize the millions of tons of concrete waste that is produced annually and landfilled. However, RCA may have inferior physical properties when compared to virgin aggregates, such as the presence of recycled mortar and preexisting deficiencies. This study evaluated the potential use of RCA from D-cracked pavement for soil stabilization. D-cracking is a type of pavement deterioration that originates in the coarse aggregate particles due to freezing and thawing. The engineering properties of low-plasticity clay with RCA and three common regional stabilizers (i.e., lime, Class C fly ash, and a combination of portland cement and fly ash) were investigated. Clay mixtures with varying proportions of chemical stabilizers and RCA from D-cracked pavements were evaluated by comparing measured unconfined compressive strength, linear shrinkage, and the California bearing ratio. Laboratory test results indicated that RCA, in conjunction with all cementitious materials, except lime, improved clay strength, stiffness, and shrinkage properties. The results from this study highlight that RCA from D-cracked pavements can be used for clay subgrade stabilization.
    publisherASCE
    titleEffect of Low-Quality Recycled Concrete Aggregate on Stabilized Clay Properties
    typeJournal Paper
    journal volume32
    journal issue8
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/(ASCE)MT.1943-5533.0003263
    page10
    treeJournal of Materials in Civil Engineering:;2020:;Volume ( 032 ):;issue: 008
    contenttypeFulltext
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