STP1275

    Characterization of Filter Cake Ash and Applications for Soil Stabilization

    Published: Jan 1997


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    Abstract

    Recycled applications were investigated for an ash produced from the incineration of diatomaceous earth filter cake used in the manufacture of additives for petroleum products. A complete chemical and physical characterization of the ash was conducted. It includes lumps which are the result of gypsum cementation. The ash produces light-weight products and exhibits pozzolanic characteristics. Mixtures of the ash with sand and other stabilizing agents were investigated for road base and subbase applications. Strength and durability tests and a microanalysis were conducted to identify the stabilization products produced. The testing program for this study indicates that the ash holds promise as a light-weight fine aggregate for use as an earth fill material.

    Keywords:

    diatomaceous earth filter, filter cake ash, bottom ash, scrubber mud, light-weight fill, gypsum cement, flowable fill, soil stabilization


    Author Information:

    McManis, KL
    Professor and associate professor, University of New Orleans, New Orleans, LA

    Nataraj, M
    Professor and associate professor, University of New Orleans, New Orleans, LA


    Paper ID: STP15654S

    Committee/Subcommittee: D18.15

    DOI: 10.1520/STP15654S


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