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    Compaction Characteristics and Bearing Ratio of Pond Ash Stabilized with Lime and Phosphogypsum

    Source: Journal of Materials in Civil Engineering:;2010:;Volume ( 022 ):;issue: 004
    Author:
    Ambarish Ghosh
    DOI: 10.1061/(ASCE)MT.1943-5533.0000028
    Publisher: American Society of Civil Engineers
    Abstract: Recycling of waste material is one of the effective solutions of its disposal problem. Fly ash produced by coal-based thermal power plants and phosphogypsum (PG) produced by fertilizer plants producing phosphoric acid as constituent of fertilizers, take huge disposal area and creates environmental problems. Stabilization/solidification of fly ash improves the engineering properties and reduces the environmental problem like leaching and dusting. This paper presents the laboratory test results of a Class F pond ash alone and stabilized with varying percentages of lime (4, 6, and 10%) and PG (0.5, and 1.0), to study the suitability of stabilized pond ash for road base and subbase construction. Standard and modified Proctor compaction tests have been conducted to reveal the compaction characteristics of the stabilized pond ash. Bearing ratio tests have been conducted on specimens, compacted at maximum dry density and optimum moisture content obtained from standard Proctor compaction tests, cured for 7, 28, and 45 days. Both unsoaked and soaked bearing ratio tests have been conducted. This paper highlights the influence of lime content, PG content, and curing period on the bearing ratio of stabilized pond ash. The empirical model has been developed to estimate the bearing ratio for the stabilized mixes through multiple regression analysis. Linear empirical relationship has been presented herein to estimate soaked bearing ratio from unsoaked bearing ratio of stabilized pond ash. The experimental results indicate that pond ash-lime-PG mixes have potential for applications as road base and subbase materials.
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      Compaction Characteristics and Bearing Ratio of Pond Ash Stabilized with Lime and Phosphogypsum

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    contributor authorAmbarish Ghosh
    date accessioned2017-05-08T21:55:04Z
    date available2017-05-08T21:55:04Z
    date copyrightApril 2010
    date issued2010
    identifier other%28asce%29mt%2E1943-5533%2E0000061.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/66367
    description abstractRecycling of waste material is one of the effective solutions of its disposal problem. Fly ash produced by coal-based thermal power plants and phosphogypsum (PG) produced by fertilizer plants producing phosphoric acid as constituent of fertilizers, take huge disposal area and creates environmental problems. Stabilization/solidification of fly ash improves the engineering properties and reduces the environmental problem like leaching and dusting. This paper presents the laboratory test results of a Class F pond ash alone and stabilized with varying percentages of lime (4, 6, and 10%) and PG (0.5, and 1.0), to study the suitability of stabilized pond ash for road base and subbase construction. Standard and modified Proctor compaction tests have been conducted to reveal the compaction characteristics of the stabilized pond ash. Bearing ratio tests have been conducted on specimens, compacted at maximum dry density and optimum moisture content obtained from standard Proctor compaction tests, cured for 7, 28, and 45 days. Both unsoaked and soaked bearing ratio tests have been conducted. This paper highlights the influence of lime content, PG content, and curing period on the bearing ratio of stabilized pond ash. The empirical model has been developed to estimate the bearing ratio for the stabilized mixes through multiple regression analysis. Linear empirical relationship has been presented herein to estimate soaked bearing ratio from unsoaked bearing ratio of stabilized pond ash. The experimental results indicate that pond ash-lime-PG mixes have potential for applications as road base and subbase materials.
    publisherAmerican Society of Civil Engineers
    titleCompaction Characteristics and Bearing Ratio of Pond Ash Stabilized with Lime and Phosphogypsum
    typeJournal Paper
    journal volume22
    journal issue4
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/(ASCE)MT.1943-5533.0000028
    treeJournal of Materials in Civil Engineering:;2010:;Volume ( 022 ):;issue: 004
    contenttypeFulltext
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