Use of Colas Active Sealing With PenTack...Colas Active Sealing –with PenTack® Test site facts:...
Transcript of Use of Colas Active Sealing With PenTack...Colas Active Sealing –with PenTack® Test site facts:...
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Basiscursus Asfaltverhardingen 2016
Use of Colas Active Sealing – With PenTack
To prolong the service life of road pavement
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Asfalt Innovatie Symposium 2019Research meets Industry
Colas Danmark
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Basiscursus Asfaltverhardingen 2016
Prolong the service life with
Colas Active Sealing with PenTack
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Asfalt Innovatie Symposium 2019Research meets Industry
Henrik StaerColas Danmark
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Inhoud
• What is PenTack.
• When is it optimal to use.
• Work process.
• Test result.
• Pictures.
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AirportsMotorways and roads
Automobile testing centers
We work within 3 main areas
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What is PenTack, and what does it contain
Description Function
Bitumen emulsion • Binder from bitumen emulsion is added
• Holes between the stones are filled up
• Amount of water getting down into the pavement is reduced
• The dosage is adjusted depending on each Pavements
Rejuvenator emulsion • The existing asphalt bitumen is added new and easier carbon
compounds
• Adhesion between stone materials and binder are re-established
• Approved flexibility in as well the surface as in the depth of the
asphalt pavement
Water • Added to achieve the optimum viscosity of PenTack®
Crushed granite • 0 – 2 mm
• 0,4 – 1,2 kg. per m2
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Preservation of Asphalt Pavements
Unique preservation process
• Cold applied bitumen emulsion based system.
• The 3 components spray-material is adjustable during application.
• The viscosity is adjusted to the pavement it is sprayed on.
• The spray rate is continuously optimized to the type and degradation status of the asphalt.
• Significant ability to penetrate into the asphalt.
• Sanded with different types and sizes of aggregate depending on
type of working area.
Before PenTack® sealing After PenTack® sealing
The yellow parts in the illustration are the added binderThe red dots represent the fine aggregate
The combined result adds asphalt mortar and restores the Microstructure of the surface
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Normal degradation curve without maintanance
Colas Active Sealing – with PenTack®
Alternative will be:
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Preventive maintenance with PenTack Sealing
Colas Active Sealing – with PenTack®
Pavement condition
….putting the degradation curve back in time.
Time
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Right time for Sealing is…
Colas Active Sealing – with PenTack®
• When you see the stone lost from the pavement.
• When you see approx. 30% of the top of the stone in your pavement.
• When the mortar is gone.
• When the pavement still is without potholes etc.
Before PenTack After PenTack
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Work process – PenTack sealing
Colas Active Sealing – with PenTack®
Handspraying work
Spraying work
Adding sand
2 months after
Air bubbles indicate penetration
Water has evaporated
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Principles of PenTack ®
UV photos
Colas Active Sealing – with PenTack®
Width : 10 cm
Depth: 3,5 cm
Top layer: Open asphalt 8 mm
Aggregates (Void volume 13-15%)
Top layer: Drainage asphalt
(Void volume 23%)Depth: 5,0 cm
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PenTack Sealing of M64 highway
Colas Active Sealing – with PenTack®
Test site facts:
Where: Motorvway M64 - Km 55,9 -61,2 - Slow lane
Asphalt type: Noise reducing asphalt from 2006
Goal: To prolong the expected lifetime of the wearing course by sealing with PenTack while keeping the skid resistance above the limits given in the Danish regulations.
Surface
Crack/void alongStone
PenTack Sealing
Stone
Mortar
After PenTack sealingBefore PenTack sealing
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Before and after PenTack ®
Colas Active Sealing – with PenTack®
5 years after
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6 years after
Before and after PenTack ®
Colas Active Sealing – with PenTack®
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Before and after PenTack ®
Colas Active Sealing – with PenTack®
Before PenTack® preservation
Porous friction course RAF Loussiemouth
After PenTack® preservation
The following summer
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Before and after PenTack ®
Colas Active Sealing – with PenTack®
Henrik [email protected]+45 40 16 31 42