STP1193

    Performance Evaluation of Asphalt Mixtures with Gasifier Slag as Fine Aggregate

    Published: Jan 1993


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    Abstract

    This study investigates the chemical, physical, and mechanical properties of gasifier slag produced through the coal gasification process. The study focuses on the use of gasifier slag as a full or partial replacement for crushed fine aggregate and/or sand in hot-mix asphalt concrete. Performance of these newly developed slag-asphalt (Slagphalt) mixtures is evaluated in comparison with Control mixes, i.e., conventional mixes without slag. The low cost of slag makes it a viable alternative as a substitute for natural sand. The angularity and relatively narrow particle size distribution of the slag will be attractive in some regions.

    Keywords:

    gasifier slag, coal gasification, hot-mix asphalt concrete, performance, fine aggregate, mix design, environmental effects, chemical properties, physical properties, sensitivity, fatigue


    Author Information:

    Khatri, MA
    Research Engineer and Vice President, Southwestern Laboratories, Houston, Texas

    Martinez, DF
    Research Engineer and Vice President, Southwestern Laboratories, Houston, Texas

    Bayomy, FM
    Associate Professor, University of Idaho, Moscow, Idaho

    Salter, JA
    Staff and Research Engineers, Shell Development Company, Houston, Texas

    Tang, WT
    Staff and Research Engineers, Shell Development Company, Houston, Texas


    Paper ID: STP19856S

    Committee/Subcommittee: D04.39

    DOI: 10.1520/STP19856S


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