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    Volume Change Behaviors of Expansive Soils Stabilized with Recycled Ashes and Fibers

    Source: Journal of Materials in Civil Engineering:;2006:;Volume ( 018 ):;issue: 002
    Author:
    Koonnamas Punthutaecha
    ,
    Anand J. Puppala
    ,
    Sai K Vanapalli
    ,
    Hilary Inyang
    DOI: 10.1061/(ASCE)0899-1561(2006)18:2(295)
    Publisher: American Society of Civil Engineers
    Abstract: In this paper, class F fly ash, bottom ash, polypropylene fibers, and nylon fibers were evaluated as potential stabilizers in enhancing volume change properties of sulfate rich expansive soils. As a part of the research evaluation, a comprehensive laboratory experimental program was designed and conducted on two different subgrade soils from two locations in Texas. Four dosage levels of each stabilizer, two compaction moisture content levels, and 14 days curing period were investigated. Volume change behavioral tests including volumetric free swell, volumetric shrinkage strain, and vertical swell pressure tests were conducted on both isolated stabilizer treated and combined ash-fiber stabilized soils. Ash stabilizers showed improvements in reducing swelling, shrinkage, and plasticity characteristics by 20–80% whereas fibers treatments resulted in varied improvements. In combined treatments, class F fly ash mixed with nylon fibers was the most effective treatment on both Dallas and Arlington soils, where the soil property enhancements were considered average-to-moderate. Possible mechanisms that resulted in the soil property improvements are discussed along with the recommended stabilizers and their dosages for expansive soil treatments.
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      Volume Change Behaviors of Expansive Soils Stabilized with Recycled Ashes and Fibers

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    contributor authorKoonnamas Punthutaecha
    contributor authorAnand J. Puppala
    contributor authorSai K Vanapalli
    contributor authorHilary Inyang
    date accessioned2017-05-08T21:18:00Z
    date available2017-05-08T21:18:00Z
    date copyrightApril 2006
    date issued2006
    identifier other%28asce%290899-1561%282006%2918%3A2%28295%29.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/46128
    description abstractIn this paper, class F fly ash, bottom ash, polypropylene fibers, and nylon fibers were evaluated as potential stabilizers in enhancing volume change properties of sulfate rich expansive soils. As a part of the research evaluation, a comprehensive laboratory experimental program was designed and conducted on two different subgrade soils from two locations in Texas. Four dosage levels of each stabilizer, two compaction moisture content levels, and 14 days curing period were investigated. Volume change behavioral tests including volumetric free swell, volumetric shrinkage strain, and vertical swell pressure tests were conducted on both isolated stabilizer treated and combined ash-fiber stabilized soils. Ash stabilizers showed improvements in reducing swelling, shrinkage, and plasticity characteristics by 20–80% whereas fibers treatments resulted in varied improvements. In combined treatments, class F fly ash mixed with nylon fibers was the most effective treatment on both Dallas and Arlington soils, where the soil property enhancements were considered average-to-moderate. Possible mechanisms that resulted in the soil property improvements are discussed along with the recommended stabilizers and their dosages for expansive soil treatments.
    publisherAmerican Society of Civil Engineers
    titleVolume Change Behaviors of Expansive Soils Stabilized with Recycled Ashes and Fibers
    typeJournal Paper
    journal volume18
    journal issue2
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/(ASCE)0899-1561(2006)18:2(295)
    treeJournal of Materials in Civil Engineering:;2006:;Volume ( 018 ):;issue: 002
    contenttypeFulltext
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