Whilst still a prototype, this unique machine – and looking remarkably similar to the K190 bush hammering unit - is based on the well-known diamond grooving principle but with significant differences. GRT has been the subject of major technological design and development and is a considerable improvement on current grooving systems, the technique being able to deal with wheel-tracked or rutted surfaces.

This machine is designed specifically to restore skid resistance on any road and runway surface. The GRT’s diamond blades cut grooves in the surface to a predetermined spacing and depth.

The treatment substantially reduces the risk of wet-skid loss of control incidents and associated casualties. Accurate control of the treatment and because of the unique way the cutting drums are mounted, it is possible to apply a consistent and even treatment to uneven surfaces over the full retextured width. Adjusting the drum rotation speed, the height of the cutting drums and the working speed, ensures the GRT machine can be used on any natural aggregate surface course (bituminous as well as cementitious) in order to restore micro and macro texture. These adjustments can also accommodate different surface bitumen conditions, aggregate sizes and the degree of accelerated weathering.

This process is particularly suitable for surfaces that can’t be treated with impact-based processes. The GRT machine is now ready for final testing to fine-tune the system. This will determine the operational parameters to achieve the optimal result of micro and/or macro texture improvement on different road and runway surfaces.

after & before retexturing | after & before retexturing | after & before retexturing

- Improve surface friction, skid resistance and provide mechanical key for material overlays, by:

- Restoring micro texture
- Restoring macro texture (on some surface types)