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Preservation of asphalt pavements
Asphalt maintenance protects road investments
Replacing large areas of aging asphalt can be costly and difficult to fund. By applying Colas Active Sealing at the right time, you can extend the service life of the existing asphalt and postpone replacement of the wearing course.
It is often financially advantageous to begin preventive asphalt maintenance when the asphalt pavement is between 8 and 15 years old.
We recommend Colas Active Sealing:
- When approximately 30% of the surface stones are visible
- When the asphalt pavement begins to lose mortar and aggregates and shows other signs of wear
- Before severe deterioration, such as cracks or potholes, develops.
Calculations show that using Colas Active Sealing reduces energy consumption, CO₂ emissions, and resource consumption compared to traditional replacement of the wearing course.
Take at look at the video and see how we extended the life of asphalt pavements for our Irish colleagues.
Working method in six steps:
1
Repairs
- Before applying Colas Active Sealing or crack sealing, potholes must be repaired.
- Demarking, if necessary.
2
Cleaning and closing off the road
- Cleaning of the asphalt pavement if deemed necessary during inspections.
- Barriers/signage are set up to guide the road's users in the best possible way and at the same time ensure the safety of our employees.
3
Applying Colas Active Sealing
- Colas Active Sealing is applied with one of our custom-built distributor trucks designed specifically for this task. The width of the distribution unit can reach up to 6,7 meters. During the application, the sealing mixture is adjusted according to the condition of the asphalt pavement. It is the viscosity, the softening effect and the applied amount that are adjustable.
- With a hand sprayer we seal areas that are difficult for the distributor truck to reach or that require extra sealing.
4
Drying time and application of crushed granite
- During the drying time, the sealing penetrates the asphalt surface while the water evaporates.
- The drying time is weather-dependent and typically ranges from 2 to 5 hours.
- Once the drying time is over, crushed granite of 0-2 mm is applied to the treated area.
5
Reopening the area
- Visual assessment of the treated area.
- Removal of temporary traffic control measures.
- Final handover.
6
After 10 days
- Optional sweeping along the kerb line.
- Remarking.
Book a meeting or contact us
Book a meeting to receive additional information, guidance or an inspection of your asphalt pavement areas.
You can also call the Colas Sealing office for further information. See contacts below.
Contact
Sealing
Henrik Godsk Jørvad
Senior salgs- og entrepriseleder / Senior Sales and Project Manager
+4521499011
Bent Mathiasen
Senior salgs- og entrepriseleder / Senior Sales and Project Manager
+4540165489