FOR A LONGER SERVICE LIFE
POSSEHL AsKo
The service life of asphalt wearing courses has shortened significantly in recent years for various reasons. One important aspect is the aging of the binder bitumen. Asphalt consists of around 94 % sand and stones and approx. 6 % binder, the bitumen. Only the binder is subject to an accelerated, natural decay process, which leads to visible damage after only a few years: Grain outbreaks and cracking lead to potholes and ultimately to complete destruction of the road body.
This development is now being taken into account with extensive measures to renew the asphalt surface courses. Nevertheless, the asphalt layers are aging much faster than the measures could catch up with this progressive effect.
The solution is a preventive approach, as we have known it from many other areas for a long time: preservation.
Michael Dirschedl
Division Manager Special Pavements for Traffic and Aviation Surfaces
Increased resistance
Increased resistance of the existing bitumen to the effects of oxidation, temperature and UV exposure.
Useful life
Cost-effective extension of the expected (remaining) useful life
Less noise&sounds
Noise-reducing properties of porous asphalt pavements are retained if preserved in time
Fast & Safe
Mobile construction site with little disruption to traffic. Traffic is released after only approx. 2 hours.
Resources
Preservative with gilsonite of purely natural origin (fossilized crude oil). Additional energy saving and emission-free due to cold installation.
Reduced icing of exposed overpass sections in winter
Repeatable several times (approx. every 5-8 years). Procedure proven for over 40 years
