Use of Air-cooled Blast Furnace Slag as Coarse Aggregate in Concrete Pavements

Abstract

This report presents available information regarding the use of air-cooled blast furnace slag (ACBFS) as coarse aggregate in concrete pavements. The report discusses ACBFS aggregate production and properties, and the properties of concrete produced with ACBFS coarse aggregate. Both the physical and chemical properties of ACBFS are presented, as are the properties of the concrete produced with ACBFS coarse aggregate. Additionally, the field performance of concrete pavements containing ACBFS coarse aggregate and observed material related distresses in these pavements are presented, along with results from laboratory evaluations of concrete containing ACBFS coarse aggregate. Finally, the life-cycle and maintenance costs associated with concrete pavements incorporating ACBFS aggregate in the concrete are also discussed in the report. While the available information included both domestic and international experience with the use of ACBFS aggregate in concrete, the predominance of information reviewed came primarily from States which have, or previously have had, supplies of ACBFS aggregate: Ohio, Michigan, Indiana, and New York.