Unpaved Roadway Structures
It’s estimated that half of all roads in the United States, and an even higher percentage of roads throughout the world, are unpaved. Many serve as heavy-duty access and haul roads for applications ranging from mining and logging operations to wind farms and landfills.
Weak subgrades pose the greatest challenge to these roads. A weak subgrade subjected to continuous heavy traffic can quickly deform, causing the road surface to rut, pothole, “washboard” and ultimately deteriorate beyond use.
TriAx® geogrid and the use thereof are protected by U.S. Patent No. 7,001,112.
Geosynthetics Magazine Article Series: Unpaved Roads Incorporating Geosynthetics (2016)
A publication of
With increasing aggregate prices, tighter construction budgets and heavier wheel loads, lower cost alternatives to traditional methods of gravel road construction have become more important. One cost-effective, proven alternative has successfully stabilized thousands of miles of gravel-surfaced roads around the world: Tensar® TriAx® Geogrids.
Tensar TriAx Geogrids are designed to reduce stresses applied to weak subgrades. Geogrid and aggregate interlock to create a mechanically stabilized layer (MSL) that distributes loads evenly, increasing bearing capacity and improving long-term performance. In addition, TriAx Geogrids provide effective separation and filtration properties when properly graded aggregate fill is used in the MSL.