FAQ

Find answers to the most recurring questions based on ADFORS expertise and experience

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Can an asphalt reinforcement be applied to an existing asphalt surface?

Yes, the self-adhesive geogrid ADFORS GlasGrid GG is intended for application on existing asphalt surfaces. The surface must meet the conditions specified in the installation manual. Please read the installation manual for ADFORS GlasGrid GG.

What tack coat should I use to apply the asphalt reinforcement?

We recommend a polymer-modified tack coat with a minimum asphalt content of 60%.

What are GlasGrid geogrids made of?

ADFORS GlasGrid geogrids are made of glass fibers which are coated with a temperature stable elastomeric polymer to protect them.

Can a geogrid be applied to a concrete surface?

Yes, the ADFORS GlasGrid can be applied on concrete surfaces. Before application, we recommend laying a thin asphalt leveling layer and then using the self-adhesive ADFORS GlasGrid GG. 

Is it possible to use a geogrid in curves and at a roundabout?

The application of the geogrid in curves can be performed following the correct application procedure. We do not recommend using geogrids at the roundabout. 

How fast can a GlasGrid be applied?

With the use of special tractor, the application speed is up to 6000 m²/hour. For manual installation, it is approx. 1000 m²/hour.

Under what weather conditions cannot the geogrid be applied?

Local standards and regulations for application of asphalt surfaces (e.g. temperature, precipitation, humidity) must be observed. We do not recommend the application of geogrids at air temperatures below 5° C and when raining or after the rain when the surface is still wet.

For what type of road are GlasGrids suitable?

ADFORS GlasGrid geogrids are suitable for application on all road categories of flexible pavements.

Can we use a GlasGrid for airport repairs?

Yes, ADFORS GlasGrid is suitable for airport repairs. It has already been successfully applied at more than 200 airports around the world.

Is GlasGrid millable and recyclable?

Yes, laboratory tests and experience from construction sites confirm that the ADFORS GlasGrid does not show any negative effects during milling and does not affect the depth of milling.  The ADFORG GlasGrid is unlimitedly recyclable and the partial reuse of milled asphalt granulate (including glass fibers) in a new asphalt mixture improves the fatigue behaviour of the recycled asphalt.

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