Long-Term Performance of Full-Depth Reclamation with Portland Cement

摘要

The FDR with cement process is a popular technique used by state, county, and city highway agencies that seek a speedy and cost-effective method to improve their roads. Agencies that use the process save between 25 percent arid 50 percent over conventional reconstruction methods. There was no evidence of structural failure in the FDR sections. The distress identified on the pavement surface was restricted to the hot-mix asphalt (HMA) overlay and was not a result of failures in the: stabilized base layer. This investigation has also provided evidence that the FDR pavement sections with sealed shrinkage cracks are performing satisfactorily. Another major benefit of the FDR with cement process is its environmental soundness. The sources of good-quality aggregate and HMA are limited and FDR conserves virgin construction materials and makes smart economic and strategic sense. Stabilizing the old HMA surface, granular base, and underlying subgrade soil with portland cement creates a solid foundation for pavements.