Geogrids
Geogrids improve the structural integrity of soils in roadways, walls and slopes by reinforcing and confining fill materials and distributing load forces. Geogrids are the answer for designers, developers and contractors facing the challenges posed by sloping ground and soft subgrades.
Geogrids help soils stand at virtually any desired angle in grade separation applications. In retaining wall and slope applications, geogrids can be combined with a wide variety of facing elements to produce the desired aesthetics for any project.
Geogrids provide support for the construction of access roads, highways, berms, dikes and structure applications that previously required the use of expensive over-excavating or piling methods on weak subgrades. Geogrids are also used in base reinforcement applications to reduce aggregate thickness requirements or extend roadway performance life.
Learn more about Nilex’s two types of geogrids:
Biaxial Geogrids - roads
Uniaxial Geogrids - wall/slope applications
TriAx Geogrids - advanced systems solution for lower cost, increased reliability and longevity for paved and unpaved applications
Biaxial (BX) Geogrids
Biaxial Geogrids improve the structural integrity of roadways by confining and distributing load forces. Geogrids provide support for the construction of access roads, highways and applications on weak subgrades that previously required expensive over-excavating and replacing. Geogrids are also used for road construction on stable subgrades to reduce aggregate thickness requirements and/or extend roadway performance life.
Base Reinforcement
When building permanent roads on a relatively firm foundation, Biaxial Geogrids provide enhanced performance or reduction of the road structure thickness. Geogrids change the way the base course performs under load. With their open grid structure and high tensile modulus, they interact with and confine base course materials, much like a rack confines balls in the game of pool.
Subgrade Improvement
When weak subgrade conditions are encountered Biaxial Geogrids are used to provide a temporary road surface or a stable foundation for a permanent road. Biaxial Geogrids work much like a snowshoe to distribute loads over a wider area.
Uniaxial (UX) Geogrids
In grade separation applications, Uniaxial Geogrids are used to help soils stand at virtually any desired angle; from 0 to 90 degrees. Geogrids can be combined with a wide variety of facing elements in retaining wall and slope applications to produce the desired structural or aesthetic conditions for any project.
Geogrid Reinforced Soil Retaining Walls
Geogrid reinforced soil retaining walls offer economical and aesthetically pleasing alternatives to conventional retaining wall systems. The geogrid reinforced fill zone behind the wall facing acts as a uniform mass or block, providing stability to the wall and structure. Geogrids work with a wide variety of fill materials and facing elements including segmental concrete blocks, concrete panels, geogrid wraps, timbers or boulders.
Geogrid Reinforced Slopes
Geogrid reinforced slopes provide a natural and economical alternative to conventional concrete retaining walls. Geogrid reinforced slopes create naturally finished slope structures that are easy to construct and enhance property values because of their natural beauty. Geogrid reinforced slopes can be built at any angle to provide the most economical use of available space while avoiding the increased cost of vertical structures.
The construction of embankments, bridge approach fills, dikes and causeways over soft soils and wetlands traditionally involves expensive, time consuming construction methods. Geogrid reinforcement of these structures minimizes the project footprint, fill requirements and differential settlement, saving time and money.
Applications
MSE
TriAx® Geogrids
TriAx is a revolutionary new geogrid product from Tensar. The triangular structure of TriAx geogrid, coupled with the increased rib thickness and junction efficiency, greatly improves aggregate interlock and confinement – leading to optimal structural performance of the mechanically stabilized layer.
Research indicates that TriAx geogrid can reduce aggregate base/sub-base requirements by 25% to 50%.
TriAx geogrid delivers performance in three dimensions:
- Multi-directional Load Distribution
- Triangular Aperture Geometry
- Junction Integrity and Efficiency
- Superior Performance for Paved and Unpaved Roads
- Less Stress on Subgrades
- Enhanced Snowshoe Effect
Spectra Roadway Improvement System
The Spectra System incorporates TriAx geogrid as part of an engineered system that consists of technology, engineering, design, and products to create a mechanically stabilized pavement structure.
In combination with the Spectra System’s engineering and design services, cost-analysis tools and site assistance, TriAx geogrid provides a simple, reliable, and affordable solution for constructing flexible pavements that deliver both reduced construction cost and long-term maintenance needs.
TriAx Demonstration Videos
The video gallery is a compilation of the technical aspects of TriAx geogrid that visually demonstrates the following performance traits of TriAx:
- Scientifically proven
- Greater confinement potential
- Reduced costs
- Reduction in rut deformation
- Unique design structure