REJUVASEAL ASPHALT PAVEMENT PRESERVATION TREATMENT CANADIAN EXPERIENCE AND CHINESE FIELD TRIALS
Asphalt pavements require systematic, routine, preventive surface maintenance to preserve the pavement and mitigate the wear and tear due to traffic and environmental effects. There is considerable applied technical information available on the growing, successful use of RejuvaSeal (proprietary coal-tar rejuvenator/sealer meeting North and South American agency requirements) and Sand RejuvaSeal (sealer plus sand such as fine boiler or nonferrous slag) for highway and airport asphalt pavement maintenance, sealing, and rejuvenation of aged (oxidized), deteriorated surfaces. Canadian highway and airport experience with Sand RejuvaSeal has shown its technical and economic benefits, and that it should be effective for about five years between treatments. The positive experience with the use of RejuvaSeal (Note) to maintain asphalt pavements and economically extend their functional lives resulted in the May 2001 initiation of RejuvaSeal demonstration trials on a variety of asphalt pavement surfaces in China. Nine demonstration sites have been completed, with the RejuvaSeal applications fully documented and performance monitoring in progress. The Canadian and Yunnan Province experience with RejuvaSeal coal-tar rejuvenator/sealer is summarized with focus on the cost-effective maintenance of asphalt pavement surfaces.