Tagged: biaxial geogrid, geogrid, geogrids, uniaxil geogrid
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February 27, 2023 at 5:13 am #26559Mitesh SinghalParticipant
Biaxial geogrid is a type of grid that provides low-cost reinforcement and soil stabilization solutions for retaining wall systems, embankment reinforcements, and more. Its unique properties – including excellent tensile strength, high deformability, and reliable durability – make it an excellent choice for various construction projects.
What is Biaxial Geogrid?
Biaxial geogrid is a type of stabilized material that is composed of a web-like network of polymer fibers. This strong and resistant material is the combination of two uniformly aligned layers that are bonded together with a specialized stitch. In comparison to other geogrids, biaxial is usually heavier and much more rigid. Not only does it provide superior tensile strength, but it also has improved stability and durability.
Benefits of Biaxial Geogrid for Soil Stabilization Projects
The unique properties of biaxial geogrid make it an ideal choice for many soil stabilization projects. It features greater flexibility, superior strength and improved resistance to harsh weather conditions. Furthermore, this form of geogrid doesn’t require heavy machinery or complicated installation process and can be laid directly on the ground. This is beneficial for projects that are located in hard-to-reach remote locations or have time constraints as there is no need to build a road solely for transporting equipment. Biaxial geogrid will also deliver long lasting performance and stability without the need of traditional reinforcement methods like wire mesh.
Types of Flexible Biaxial Geogrids
Biaxial geogrid is typically available in two distinct forms: cross-linked polyethylene and thermoplastic. Cross linked polyethylene biaxial geogrid provides superior strength and stability, has the highest failure strain tensile strength of both types and performs best when embedment in granular soils. It also features an extended working temperature range, which makes it appropriate for various temperature conditions. On the other hand, thermoplastic biaxial geogrid offers improved permeability to water vapor due to its open structure but can only be used at relatively low soil temperatures. Both are available in different sizes to suit different projects.
Structural Design for Geogrids
Biaxial geogrids can be designed for various types of soil stabilization projects. They are often categorized by acellular or cellular structures, with the latter providing longer-lasting ground reinforcement due to its greater rigidity. It is also important to consider grid openings when selecting a particular type of geogrid to increase tensile strength and elongation properties. Depending on the requirements, the engineers have to choose between open cells – which improve permeability, water flow and allow easier installation – or closed cells – which create more defined boundaries so that turf roots won’t grow through it.
Tips for Choosing the Right Cell and Formulation
The two main factors to consider when selecting the correct biaxial geogrid are cell and formulation. Drillers should take into consideration the type of soil being stabilized, as this will determine how many cells per metre width need to be used. Additionally, each cell size needs to provide a sufficient shear strength and tensile resistance for the project. Furthermore, consideration should also be taken about formulating a grid that is suitable with respect to depth of the soils that it is used in, related to environmental conditions in the area during installation such as temperature and moisture levels.
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