Utilization of Western Coal Fly Ash in Construction of Highways in the Midwest

摘要

Coal burning utilities in the Midwest are increasingly using sub-bituminous coalfrom Wyoming. These utilities typically produce fly ash, which, because of its high calcium oxide content, may be classified as Class C fly ash. These ashes are characterized by their self-cementing property and, therefore, they can be used for soil improvement as cement surrogates. This report focuses upon the design, construction, and environmental issues pertaining to utilization of Class C fly ash for soil stabilization. The report also gives a description of fly ash physical and chemical properties, with special consideration to high calcium Class C fly ash.