The U.S. Army Corps of Engineers developed the first cellular confinement system in the late 1970's as a means to construct roads, airstrips, etc. over soft ground and provide a system that would not be adversely affected by wet weather conditions. They determined that placement of adjacent thin walled sand-filled cells over a soft sub-grade provided significantly greater load/bearing capacity than compacted soil alone.
Of all the various materials tested, high-density polyethylene (HDPE) was found to provide the best combination of strength, service life, and economy.
Geo Products has manufactured EnviroGrid® Geocell since 1990, with its first customer being the United States Department of Defense. 6.4 million square feet of EnviroGrid® was purchased for use in various military applications during operation Desert Storm.
Geo Products was licensed by the United States Army Corps of Engineers, the patent holder for the geocell material (US Pat #4,797,026) through 2006. The license number was 9807-E-P291. This patent has since expired. We are also an approved material (NSN# 5680015011032, 5680011987955) for the United States Department of Defense. EnviroGrid® geocell is a lightweight, expandable confinement system which creates an economical erosion barrier or structural foundation. The main applications are soil stabilization, slope and channel erosion control and retaining walls.
The Geo Products manufacturing plant is located in Houston, Texas USA and is ISO 9001:2015, CE certified, and UKCA certified. EnviroGrid® is an approved material for multiple State Departments of Transportation within the United States and Ministries of Public Works across the globe. Geo Products has a presence within all seven continents and over fifty countries.