A new patch repair system based on Gilsonite has been used in trials to repair damaged surfaces on the M40. ASI's Rhinopatch makes use of infra red technology to soften the asphalt permimeter of potholes, enabling the insitu material to be raked, rejuvenated with an emulsified Gilsonite binder and then levelled, before being compacted to the required finish.
Heating in this manner would normally result in accelerated degradation of the asphalt. However, by spraying a further penatrative solvent-based Gilsonite rejuvenator into the cooled surface, the binder is renewed and the area sealed and protected from further atmospheric oxidisation. The infra red softening also facilitates a monolithic bond to the surrounding asphalt.
Gilsonite is a naturally occurring pure mineral asphalt which is totally compatible with the existing constituents of asphalt. It re - establishes the integrity of the surface and increases performance life.
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