Oklahoma. Department of Transportation. Planning & Research Division.
Purpose This research is designed to determine the effect of the mechanically activated fly ash on fresh concrete properties and the ultimate strength of the hardened concrete. Six types of fly ash that are locally available in the state of Oklahoma were used in this research. The activation of the fly ash was performed with a modified ball mill to increase the hydration reaction rate of the fly ash particles. Two primary variables were studied in this research; Grinding duration and the percentage of fly ash as a portion of cementitious material.