The technologies for using many waste materials including industrial, domestic, and mining/metallurgical wastes were developed by the federal highway administration during the 1970s. Studies on fly ash, bottom ash, incinerator residue, sulfate wastes, digested sewage sludge, coal mine refuse, waste rubber, and cement manufacturing wastes have been completed. Materials investigated were stabilized withvarious binders including lime, lime-fly ash, asphalt cement, and portland cement. Both laboratory evaluations and field tests were performed. Many of the systems evaluated developed strength and other physical properties adequate for use in embankments, subbases, and bases. Some materials (e.G., Fused incinerator residue) were technically adequate for use in bituminous concrete-wearing surfaces. While the emphasis of the research was on engineering behavior, assessmentsof economic and environmental factors were made in some cases. Information generated should be of interest and of use today when more and more emphasis is being placed on saving the environment from further desecration. This paper appears in transportation research record no. 1288, Geotechnical engineering 1990.
Abstract