Shortly after the First World War, the U.S. Army Corps of Engineers did extensive research into developing a liquid blend of maltenous type petroleum solvent. With refined oil tar products proving to be the most complete performer, development of three component sealer rejuvenators began.
The 1970s proved to be a significant period for the continued development of refined bitumen based rejuvenators, with the release of a report titled Rejuvenation of Asphalt Pavement by the Air Force Weapons Laboratory showing a marked improvement in viscosity of the asphalt binder tested. In 1976, a study completed by the U.S. Army Engineer Waterways Experiment Station provided performance data that indicated refined bitumen based rejuvenators prolongs the life of asphalt pavement. By the late 1980s, rejuvenator products were deemed eligible by the FAA for Airport Improvement Program (AIP) funding.
Over the past decade, these specially designed, treated and distill-processed Refined Bitumen R12 based rejuvenators have been improved and are now widely adopted as part of accredited pavement preventive maintenance programs across the globe.
An overwhelming amount of laboratory and field test data continues to confirm that in-situ chemical rejuvenation represents a cost-effective alternative compared with traditional reconstruction techniques.