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CEMENTING CHARACTERISTICS OF CLASS C FLY ASH

Anil Kumar Misra, B Stehman, A Hapka

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Abstract

Fly ash is one of the most voluminous industrial byproducts that result from coal combustion. This study examines the physical and chemical characteristics of fly ash with the aim of: differentiating between high-Ca fly ash with low Ca ash, and exploring the statistical variability of fly ash properties. The paper describes the results of the laboratory tests used to evaluate the cementing characteristics of Class C fly ash obtained from power plant burning subbituminous Wyoming coal. Laboratory tests demonstrate that fly ash can be effectively used as cement surrogates in portland cement concrete, for intermediate strength fly ash concrete or flowable fills, and for low strength clay soil stabilizer.

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What this paper is about

Fly ash is one of the most voluminous industrial byproducts that result from coal combustion. This study examines the physical and chemical characteristics of fly ash with the aim of: differentiating between high-Ca fly ash with low Ca ash, and exploring the statistical variability of fly ash properties. The paper describes the results of the laboratory tests used to evaluate the cementing characteristics of Class C fly ash obtained from power plant burning subbituminous Wyoming coal. Laboratory tests demonstrate that fly ash can be effectively used as cement surrogates in portland cement concrete, for intermediate strength fly ash concrete or flowable fills, and for low strength clay soil stabilizer.

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Available abstract

Fly ash is one of the most voluminous industrial byproducts that result from coal combustion. This study examines the physical and chemical characteristics of fly ash with the aim of: differentiating between high-Ca fly ash with low Ca ash, and exploring the statistical variability of fly ash properties. The paper describes the results of the laboratory tests used to evaluate the cementing characteristics of Class C fly ash obtained from power plant burning subbituminous Wyoming coal. Laboratory tests demonstrate that fly ash can be effectively used as cement surrogates in portland cement concrete, for intermediate strength fly ash concrete or flowable fills, and for low strength clay soil stabilizer.

Key concepts: Fly ash, Portland cement, Coal, Cement, Environmental science, Waste management, Coal combustion products, Statistical analysis

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