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Potential for energy conservation through the use of slag and fly ash in concrete. Final report

Technical Report ·
OSTI ID:6202696
This study provides an overview of the opportunity for energy conservation through the use of fly ash and glassy (granulated or pelletized) blast furnace slag in the manufacture of blended cement or as ingredients with portland cement in concrete. Hydraulic (portland) cement concrete is the most widely used manmade building material in the world; approximately 700 million tons are used each year in the U.S. alone. Portland cement, the binder in most concrete placed in the U.S., is produced at a great energy cost: the U.S. cement industry consumes about 564 trillion BTUs annually, or roughly 2% of the energy consumed directly in the nation's industrial processes. Certain forms of both fly ash and iron blast-furnace slag can be used as ingredients in portland cement concrete to supplement the cementing action of the portland cement, and effectively reduce the amount of portland cement required as a binder per unit volume of concrete. This report examines the prospects of using the residual byproducts of iron and steel manufacture (blast furnace slag) and electric utility operations (fly ash) to an increasing extent in order to reduce the amount of portland cement required to produce an equivalent amount of concrete. This would reduce the overall energy required to produce that concrete.
Research Organization:
Gordian Associates, Inc., Washington, DC (USA)
OSTI ID:
6202696
Report Number(s):
SAN-1699-T1
Country of Publication:
United States
Language:
English