Use of Fly Ash in Concrete

This report gives an overview of the origin and properties of fly ash, its effect on the properties of hydraulic cement concrete, and the proper selection and use of fly ash in the production of hydraulic cement concrete and concrete products. Information and recommendations concerning the selection and use of Class C and Class F fly ashes generally conforming to the requirements of ASTM C 618 are provided. Specific topics include: A detailed description of the composition of fly ash; The physical and chemical effects of fly ash on properties of concrete; Guidance on the handling and use of fly ash in concrete construction; Use of fly ash in the production of concrete products and specialty concrete; and Recommended procedures for quality control.