SYNTHETIC CLASS C FLY ASH AND USE THEREOF AS PARTIAL CEMENT REPLACEMENT IN GENERAL PURPOSE CONCRETE

摘要

A synthetic Class C fly ash results from a substantiallyhomogeneous blend of about 40-60% by weight of a Class F fly ashand about 60-40% by weight of cement kiln dust (CKD). This newfly ash can replace about 25-50% by weight of portland cement inconventional formulations with coarse and fine aggregate formaking general purpose concrete and particularly ready-mixconcrete with comparable compressive strength and like properties.