Tenax Roadrain:

 

· Economic alternative to open-graded aggregate (free-draining base layers)

· Improved Structural Number (SN) due to improved pavement drainage

· Reduced undercut

· High in-plane flow rates mean decreased time to drain

· True capillary break results in void-maintaining structure (for freeze-thaw areas)

· Long-term resistance to applied high, normal loads - Compressive creep resistance: 70% thickness retained after 10,000 hours at 25,000 psf loading

· Ease and speed of installation

· Ability to use structural fill in lieu of less structural, open-graded drainage aggregate

· Geotextile separator to prevent the migration of fines

· Energy absorption to mitigate reflective cracking to overlying asphalt

 

Applications:

· Roadways

· Under aggregate base course

· Directly beneath PCC or asphalt pavement or pavement overlay

· PCC joint repair

· Parking lots and paved walkways drainage layers

· Embankments and dike drainage

· Alternate to granular blanket drains

· Channel drains

· Detention ponds

· Under concrete slabs

· Airport runways and taxiways

· Wherever aggregate drainage material is used.                        

Tenax Roadrain rolls ready to be rolled out across main runway at the Albion Sands Jackpine Aerodrome Site north of Fort McMurray, Alberta.. The Muskeg and vegetative top layers of the site were stripped and the working areas graded and leveled before application of the Roadrain.

First layers of fill placed on the Tenax Roadrain. The top of the base fill layer will be at the top of the pipe shown. There will be about 6 feet of crushed base material  placed on the Roadrain. The Engineered design called for 100% compaction, which was achieved with Tenax Roadrain.

Tri-Planar Roadrain without the nonwoven geotextile on each side. You can see the substantial inside rib in the middle plane, with a formed channel between each set of ribs. The void thus formed allows easy passage of water, even under very high compressive pressures.

 specifications and

installation instructions