Surface dressing is a thin surface treatment consisting of successive layers of bitumen emulsion and aggregates.
Longitudinal cracks, mainly in the wheel patch, are a sign of structural weakness. In the absence of proper maintenance, they often develop into larger areas of connected cracks.
This has the following effects:
- Water penetration into the interface of the layers and throughout the entire pavement structure.
- Structural weakening
- Seal to ensure impermeability to water
- If necessary, reinforce the structure (followed by the application of a wearing course).
The following techniques are recommended to ensure sealing :
To strengthen the structure, the following techniques are recommended :
Grave Emulsion is used for small maintenance, reprofiling, reinforcement and in new road bases.
Recycling with bitumen emulsions, in for example an asphalt plant or a Grave Emulsion type plant, consists of treatingmilled and screened asphalt planingsmaterials obtained from the demolition ofold pavement layers.