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This three-year project at OSU, totaling over $2 million, is funded primarily by the Ohio Coal Development Office of the Ohio Air Quality Development Authority with additional support from the Delaware and Warren County Engineers Offices, Base Construction, Carmeuse NA, Headwater Resources, and others.

"Last year, two counties in Ohio used Ohio coal-generated fly ash in reclaiming failed asphalt pavements," says Mark Shanahan, executive director of the Ohio Air Quality Development Authority, which manages the Ohio Coal Development Office. "This resulted in more durable highway infrastructure and promoted the recycling of pavement materials and coal combustion byproducts, both of which would otherwise have been landfilled."

Greg Samios, project manager of EDP Consultants Inc. adds, "The unique opportunity of a comparative mix design study has enabled EDP Consultants to increase our knowledge and understanding of how different chemical additives may benefit the recycling industry."

About the author: Dr. Tarunjit S. Butalia, P.E., is a research scientist and coal combustion products coordinator for the Department of Civil and Environmental Engineering and Geodetic Science at Ohio State University.

According to Dr. Butalia, an important component of this project is the technology transfer of research findings of the technical investigations of the research. Information about the results of the long-term monitoring program will be shared with members of the Asphalt Recycling and Reclaiming Association. You can reach Dr. Butalia at butalia.1@osu.edu.