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Asphalt geocomposite consisting of a stiff polypropylene grid, thermally-bonded to a polypropylene paving fabric. The grid controls strains in the overlay through interlock with the asphalt mix due to the high-profile ribs, providing a structural reinforcing effect. The fabric aids installation, and together with the bitumen absorbed from the bond coat, provides a stress relief effect (stress absorbing membrane interlayer - SAMI) and interlayer barrier against ingress of moisture and oxygen.
Tensar® AR-GN is typically used in road pavements where the asphalt overlay thickness is greater than 70mm.
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WHY CHOOSE ASPHALT GEOCOMPOSITE?
- Provides effective reinforcement (load transfer), stress relief and interlayer barrier (waterproofing) functions
- Increases the fatigue life of pavements with weak foundations
- Reduces pavement rutting by up to 70%
- Controls reflective cracking in overlays making it ideal for new road construction or repairing existing roads
- A proven solution with extensive laboratory testing and more than 25 years of field experience
- Provides long-term cost benefits by lengthening the maintenance cycle for asphalt pavements in road networks, airports, sea ports and hardstand areas, compared to traditional pavement reinforcement methods
- Resistant to most chemicals and less prone to installation damage
APPLICATIONS
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FUNCTION
Barrier
Prevents or reduces the movement of any fluid through the use of a geosynthetic barrier. Used to isolate one material from another. Common applications are landfills or ponds to prevent contamination of surrounding areas.
Reinforcement
Geosynthetics provides additional strength to soils and aggregate. Used to reinforce steep slopes, and to stabilise road or rail construction over weak and variable soils. Enables embankments to be constructed over very soft foundations and to build slopes at steeper angles than would be possible with unreinforced soil. Geosynthetics (or geogrids) are also used to bridge over voids that may develop below load bearing granular layers (roads and railways) or below cover systems in landfill applications.
Stress Relief
Use of a geosynthetic to slow the development of cracks by absorbing the stresses that arise from a damaged pavement. Increases the life span by absorbing stress at the interface with the road surface and slows down the appearance of cracks or deformation.
