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    Performance and Leaching Assessment of Flowable Slurry

    Source: Journal of Environmental Engineering:;2001:;Volume ( 127 ):;issue: 004
    Author:
    Tarun R. Naik
    ,
    Shiw S. Singh
    ,
    Bruce W. Ramme
    DOI: 10.1061/(ASCE)0733-9372(2001)127:4(359)
    Publisher: American Society of Civil Engineers
    Abstract: This project was conducted to evaluate the performance and leaching of controlled low strength materials (CLSM) incorporating fly ash and foundry sand. Two different CLSM (or flowable slurry) reference mixtures (equivalent to available production CLSM mixtures) were proportioned for unconfined compressive strength levels in the range of 0.3–0.7 MPa (50–100 psi), at 28 days, using two sources of ASTM Class F fly ash. For each reference mixture, other mixtures were proportioned using two sources of foundry sand (molten metal-casting mold sand) as a replacement for fly ash in the range of 30–85%. The ingredients of the slurry mixtures—fly ash, clean foundry sand, and used foundry sand—were tested for their physical and chemical properties and their leachate characteristics. Portland cement used as the primary binder was also tested for its properties. All CLSM mixtures made with and without foundry sand were evaluated for settlement, setting and hardening characteristics, compressive strength, permeability, and leachate characteristics. The leachate results of these CLSM-making materials were below the enforcement standards (ES) of the Wisconsin Department of Natural Resources (WDNR) ground-water quality standards (GWQS). They also met practically all the parameters of the drinking water standards. A number of CLSM mixtures incorporating fly ash and foundry sand are recommended for construction applications.
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      Performance and Leaching Assessment of Flowable Slurry

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    contributor authorTarun R. Naik
    contributor authorShiw S. Singh
    contributor authorBruce W. Ramme
    date accessioned2017-05-08T21:32:16Z
    date available2017-05-08T21:32:16Z
    date copyrightApril 2001
    date issued2001
    identifier other%28asce%290733-9372%282001%29127%3A4%28359%29.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/55298
    description abstractThis project was conducted to evaluate the performance and leaching of controlled low strength materials (CLSM) incorporating fly ash and foundry sand. Two different CLSM (or flowable slurry) reference mixtures (equivalent to available production CLSM mixtures) were proportioned for unconfined compressive strength levels in the range of 0.3–0.7 MPa (50–100 psi), at 28 days, using two sources of ASTM Class F fly ash. For each reference mixture, other mixtures were proportioned using two sources of foundry sand (molten metal-casting mold sand) as a replacement for fly ash in the range of 30–85%. The ingredients of the slurry mixtures—fly ash, clean foundry sand, and used foundry sand—were tested for their physical and chemical properties and their leachate characteristics. Portland cement used as the primary binder was also tested for its properties. All CLSM mixtures made with and without foundry sand were evaluated for settlement, setting and hardening characteristics, compressive strength, permeability, and leachate characteristics. The leachate results of these CLSM-making materials were below the enforcement standards (ES) of the Wisconsin Department of Natural Resources (WDNR) ground-water quality standards (GWQS). They also met practically all the parameters of the drinking water standards. A number of CLSM mixtures incorporating fly ash and foundry sand are recommended for construction applications.
    publisherAmerican Society of Civil Engineers
    titlePerformance and Leaching Assessment of Flowable Slurry
    typeJournal Paper
    journal volume127
    journal issue4
    journal titleJournal of Environmental Engineering
    identifier doi10.1061/(ASCE)0733-9372(2001)127:4(359)
    treeJournal of Environmental Engineering:;2001:;Volume ( 127 ):;issue: 004
    contenttypeFulltext
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