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Tensar’s original geogrid product, the BX geogrid has provided soft soil stabilization and support for almost three decades. Site development often encounters soil problems that can become a constant maintenance headache, eating into cycle times and increasing the cost of moving materials. In response, many contractors choose to over-excavate the weak materials, thus dramatically increasing the cost of the project. The Tensar BX Geogrid offers a subgrade improvement solution to help site development stand up to repeated loads by reinforcing and stabilizing site materials.
Key Features of Tensar BX Geogrid:
Use Tensar Geogrids for subgrade stabilization for improved site access, reduced aggregate requirements, reduced undercut, reduced maintenance, and simple installation. Weak foundation soils (subgrades) are a common problem in road construction. Large deformation of the subgrade will lead to a rapid deterioration of the pavement surface. The interlocking action of aggregate and Tensar Geogrids results in a stiffened granular platform. This platform enhances load distribution, much like a snowshoe distributes a person’s weight evenly over soft snow. The “snowshoe effect” generated, reduces the stress applied to the subgrade. The greater rib depth and radial stiffness of the TriAx Geogrid is even more effective in confining overlying granular fill, enhancing the “snowshoe effect” over soft subgrades by locking aggregate particles more efficiently during the compaction effort.
As an alternative to deep over-excavation, concrete slabs, chemical stabilization/cement grouting and deep foundations, Tensar Geogrids can increase the effective bearing capacity of soil beneath shallow spread footings. Creating a stiffened mat beneath the concrete footing reduces total and differential settlement and improves the margin of safety for unforeseen soil conditions. Geogrids can also provide a load transfer platform when used with an intermediate foundation system, such as rammed aggregate piers, or traditional deep foundation techniques.
While conventional approaches can be expensive, labor intensive or environmentally unsound, utilizing Tensar TriAx or Tensar BX Geogrids provides an economical alternative to a potentially costly undertaking.
Tensar BX Geogrids increase the life of a rail track's substructure by providing soil reinforcement in rail ballast and sub-ballast layers. This allows you to decrease the required roadbed thickness with no loss of performance. Geogrids allow you to maintain good drainage of the roadbed section and also reduces track settlement by preventing the vertical movement of sub-ballast particles into the underlying soft subgrade. Maintenance decreases because general wear and tear on a track's mechanical components (i.e. ties, fasteners, insulated joints, etc.) is reduced. Initial cost savings is typically in excess of $30k per linear mile of track.
Tensar Quick Guide
Roadway Improvement System Overview