It does this with steel cylinders made from recycled waste auto tires. Mechanical Concrete® has been researched, developed and demonstrated since 2005. It is a strong and economical method for stabilizing and strengthening stone aggregates and soils. It’s easy to understand and use. Mechanical Concrete® is patent protected in the U.S. Mechanical Concrete® is the first strong, economical method of confining aggregates. New-tire design criteria make tire-derived-geo-cylinders, TDGC, much stronger than designs require. So they work especially well in civil engineering and heavy construction applications. Reusing a waste product makes it both green & economical. A Mechanical Concrete® road base physically binds together granular soil and stone particles and then spreads out heavy wheel loads over the subgrade. So it improves the overall performance of both paved and unpaved roads. Proof tested at 200psi, TDGC confinement more than triples the load supporting capacity of crushed stone, sand, and soils. It does more with less, and it lasts longer—that saves real money. Experience with industrial gravel roads show Mechanical Concrete® reduces unpaved road maintenance by as much as 75%. It virtually eliminates road edge and ditch collapse failures, potholes and ruts. Since 2010 road bases of Mechanical Concrete® have carried over 500,000 coal trucks per year, resisted floods, freeze and thaw cycles and industrial traffic. These heavily travelled industrial roads have crushed stone, concrete, and asphalt surfaces on WV and Ohio subgrades. It also supports low volume roads on soft California and Arizona desert sand, and public roads in the South Texas, Eagle Ford play. For Industrial Road Bases, ZERO Active Pressure Retaining Walls, Positive Erosion Control, and Storm Water Retention
