What structural applications use fly ash?
Fly ash is added to cement and concrete and is used in many large-scale construction projects. Fly ash is a vital component in high-strength concrete in buildings that grace the skylines of major U.S. cities. Fly ash concrete is used in the decks and piers of many highway bridges. Concrete pavements containing fly ash are very durable and cost effective. Between 1950 and 1970, concrete with fly ash contents as high as 50 percent was used in an estimated 100 major dam construction projects. In the construction of Hungry Horse Dam in 1953, for example, 120,000 metric tons of fly ash were used (fig. 5).
