RejuvaSeal - Airport Pavement Maintenance and Pavement Sealing Techniques | Hi-Lite Airfield Services, LLC
Hi-Lite's Techniques for Making Pavements Last
Asphalt Pavement Rejuvenation - RejuvaSeal®
Hi-Lite uses RejuvaSeal®, a revolutionary, three-in-one treatment for asphalt pavements that meets FAA Engineer Briefing 44b. RejuvaSeal is capable of not only sealing the asphalt, but of revitalizing the asphalt binder. Rejuvenation is possible because RejuvaSeal, unlike seal coats, is designed to penetrate the surface of asphalt.
Once it has penetrated, RejuvaSeal dramatically reduces the viscosity and brittleness in the top one-half inch of asphalt while significantly increasing ductility and flexibility.
In addition to its ability to rejuvenate, RejuvaSeal is a very effective sealer. The capability to penetrate gives RejuvaSeal unique sealing characteristics. Asphalt surfaces treated with RejuvaSeal are fuel, water, and chemical resistant.
RejuvaSeal is durable. During thermal cycles, RejuvaSeal contracts and expands at the same rate as the asphalt. In comparison, coal-tar emulsions and other seal coats simply lay on the surface. They undergo a markedly differing expansion and contraction rate from the asphalt. This eventually leads to cracking, pin-holing, and delaminating. RejuvaSeal does not suffer from these problems; through penetration, it becomes an integral part of the asphalt.
RejuvaSeal should be applied to pavements before they begin to show the deleterious signs of age. The sooner the aging process is arrested, the easier and less expensive it will be to maintain the pavement. Application of RejuvaSeal® every four to five years will not only extend the life of the asphalt pavement indefinitely, but can reduce the life-cycle cost by sixty-seven percent or more.
Asphalt pavements, left unprotected, will be damaged and eventually destroyed by the effects of thermal and UV induced oxidation, erosion caused by moisture, gasoline and oil drippings, salt and chemicals. Coal tar emulsion pavement sealers, due to the refined tars unique chemical and molecular structure, are inherently resistant to these elements and provide protection superior to asphalt based pavement sealers. Regular application of coal tar emulsion pavement sealers will extend the life of the pavement and protect the investment it represents.
Crack treatments and pavement repairs are critical for reducing FOD and stopping sub base deterioration. Untreated cracks will become potholes, dips, and bumps. Crack treatments are cost effective and have up to 9 years life performance. Much confusion does exist in the terms used for crack treatments and what each term actually means.
Crack Filling is a term used for treatments used only on non working cracks. These usually involve a lower quality sealant and little preparation. Crack filling is done on pavements that are fair to poor condition to maintain or slightly improve their condition. The main reasons to do this is to stop moisture from penetrating to the sub base and stop crack raveling.
Crack Sealing is a term used on working cracks. These usually involve higher quality sealant and much more effort for preparation. Crack sealing is preformed on pavements that are in good condition. This is defined as pavement with a sound base and exhibits distress in the form of thermal or working cracks with greater than 1/8 inch movement. Generally all crack seal operations include mechanically widening the crack, commonly referred to as routing. The expected life of this operation is generally 5 to 9 years.
Joint Sealing is sealing of concrete pavement joints. This is required to stop moisture from entering and deteriorating the sub base of the PCC pavement. This process usually involves sawing the joint wider and use of backer rod to keep the joint sealant from adhering to bottom of the joint and just adhere to the sides.