Preservation of asphalt surface


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

Michael Dirschedl

Division Manager Special Pavements for Traffic and Aviation Surfaces

Mobile +49 173 5718618
Phone +49 6701 20449-26

Telefon Michael DirschedlTelefon Michael DirschedlE-Mail Michael DirschedlE-Mail Michael Dirschedl

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.


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