A range of Tensar TriAx Geogrid videos can be seen below.
In 2003, the U.S. Army Corps of Engineers (Corps) identified and defined the primary applications for geogrid stabilization for paved and unpaved roads. In an engineering technical letter (ETL), the Corps identified three primary mechanisms as being relevant to the interaction of geogrid reinforcement and pavement materials: lateral restraint, improved bearing capacity, and tensioned membrane effect. The videos offered below illustrate two of these three mechanisms using Tensar’s TriAx Geogrid.
Tensar TriAx geogrids - Sand Box Demonstration – using soft foam, a weak subgrade condition is created to demonstrate the improved bearing capacity realized using Tensar TriAx geogrid. Note how the participant’s weight is not supported in the unreinforced condition yet is fully distributed by the TriAx product forming a stabilized composite of sand and geogrid.
Tensar TriAx geogrid - Box-of-Rocks Demonstration -when pavement or haul road foundation subgrade support is sufficient, properly designed geogrids offer a unique lateral restraint mechanism that serves to mitigate the vertical and horizontal movement of unbound aggregates in a paved or unpaved application. The box-of-rocks is a simple demonstration that shows the confining benefits of TriAx geogrid using aggregate sub-base fill material in a hinged box.
Tensar TriAx geogrids - Tennis Ball Demonstration – proper confinement of aggregate particles is essential to the performance of geogrid. This demonstration uses a billiard-ball type triangular rack and tennis balls to show the significance of incorporating a high-profile rib and a triangular aperture to optimize both confinement of an unbound material and the arrangement of aggregate particles.