The present invention provides a system for treating fly ash and a method of use thereof. The system and method allow for the quick and consistent application of a chemical entity to fly ash so that the characteristics of the fly ash are changed in order to allow use of the fly ash in a new capacity. One specific example is the use of treated fly ash in concrete. The system disclosed herein may be used to treat fly ash as it is produced at a coal-burning power plant or as it is unloaded from a pneumatic truck.