ForConstructionPros.com

In the third activity, existing flexible pavements constructed in Ohio using FDR will be investigated. This will allow for evaluation of the performance of existing projects for which no performance data has been collected to date.

Lastly, the existing outreach and technology transfer efforts of the Coal Combustion Products (CCP) Extension Program at OSU will be focused on county, state, and federal transportation officials and other end users of the technology.

This project will demonstrate that when non-concrete quality fly ash in combination with lime or lime kiln dust are properly incorporated into FDR reconstruction of a flexible pavement, the use of fly ash can be economically attractive while offering increased structural and service performance, and should not lead to a degradation of environmental quality.

"One of our objectives in this research is to demonstrate the many potential environmental benefits associated with the use of fly ash in the FDR of asphalt pavements," says Associate Professor Harold Walker of OSU's Department of Civil and Environmental Engineering and Geodetic Science.

Delaware County pavement
Delaware County (just north of Columbus) is the fastest growing county in Ohio. In collaboration with the Delaware County Engineer's Office, Section Line Road between State Route 42 and Home Road was selected for FDR reconstruction in 2006.