Geogrid Manufacturers
Geogrid Manufacturers use a range of different manufacturing methods to produce high-quality, durable products. They also offer a range of testing and quality control procedures to ensure that customers receive the right product for their project.
Uniaxial geogrids are made of polyester with a polymer coating to protect them from the elements. These coatings are typically bitumen, latex, or PVC. They are then knitted or woven with flexible junctions that form apertures.
Extruded
A geogrid is a flat polymer structure that can be stretched in two or more directions. It is often used for ground stabilization and soil reinforcement applications. It is highly durable and can withstand heavy loads. It also helps in distributing the load evenly, thus reducing stress on the subgrade. There are several types of geogrids, each of which is designed for specific applications. Choosing the right one for your project will depend on factors such as anticipated load and the quality of the soil.
There are many different ways to manufacture geogrids, including knitting or weaving multi-filament polymer yarns and heat-welding strips of material. They are then shaped into a grid. The different manufacturing methods have a significant impact on the final product.
The first method is the extrusion process. This forces molten polymer into a plastic net-like structure that is then stretched into the desired shape. The Geogrid Manufacturers result is a geogrid that has high tensile strength and good resistance to environmental exposure and construction-induced damage.
The second method involves weaving or knitting single yarns from polymer multi-filaments such as polyester, polyvinyl chloride or polypropylene. These are then woven into longitudinal and transverse ribs that have open spaces between them. The ribs are then joined together by knitting or intertwining. The geogrid is then protected by a coating such as bitumen, EVA, PVC or SBR.
Knitted
Manufacturer of construction products for landfill, erosion control, drainage and soil stabilization applications. Products include woven geotextile fabrics, needle-punched nonwoven geotextile fabrics and knitted polymer geogrids. The company offers a range of services including consulting, design, manufacturing, installation and maintenance. It also provides turnkey system integration for rail and highway bridges, retaining walls, slopes and levees. Its other products include cellular confinement systems, composite drains and sludge dewatering geotextile tubes.
Various geogrids are made by punching and drawing an extruded sheet of polymer, weaving continuous fibres or by bonding tensile elements. They are typically woven into a planar structure with open grid structures, which allow soil or aggregate to penetrate through the apertures. A geogrid’s tensile strength is determined by the type of polymer and method of manufacture, the structure of its apertures, and its surface texture.
A knitted polymer geogrid is a high-strength, biaxial geogrid with a compact woven fabric structure and varying mesh sizes. Its unique construction process improves tensile reinforcement capacity in two principle directions to provide superior engineering and long term design strengths. It is also inert to biological degradation and resistant to natural chemicals, alkalis and acids.
A knitted polyester geogrid is a high-strength, multi-filament geosynthetic material which has been knitted and coated with a tough polymer coating. Its high tensile strength makes it suitable for use in difficult civil engineering projects such as retaining walls, steep slopes and highway bridge abutments. It can be used to reinforce soft soil, which can greatly improve its bearing capacity and stability.
Woven
Generally made of a regular pattern of fairly rigid types of plastic, woven geogrids can also be made with more flexible plastic or with open spaces between the ribs. They are designed to provide tensile strength to soil, which helps reduce ground settlement and enhance stability and longevity of structures like roads and retaining walls. Woven grids are available in uniaxial and biaxial styles. They can be made from polyesters, polyvinyl alcohol, and/or polypropylene. They may be knitted or woven from yarns, heat-welded from strips of material, or punched with a regular pattern and then stretched into a grid.
Woven grids are often used to reinforce a base layer in road construction. They can also help reduce construction timelines, thanks to their high rib and junction strength. They can be used to stabilize soil backfill in retaining wall construction and as a means of strengthening pavement bases.
Cherokee Manufacturing offers a full line of punched and drawn polypropylene geogrids. They are ideal for base reinforcement applications to reduce aggregate base, extend roadway life, and reduce construction timelines. These products also offer superior junction strength and efficiency compared to other biaxial grids on the market. These geogrids can be used for a variety of projects, including bridges, railroad embankments, and pond liners. They are highly versatile, durable, and economical.
Stretched
There are two types of geogrids: uniaxial and biaxial. Uniaxial geogrids are shaped by punching holes into a polymer sheet and applying directional stretching under heated conditions. They can be made into either a unidirectional or bidirectional mesh, depending on the intended construction use and the tensile strength required for the application. Biaxial geogrids are shaped by stretching both directions at the same time. This type of grid is ideal for applications with high lateral loads and steep slopes, as it reduces differential movement and improves foundation bearing capacity.
After the ribs are stretched, they undergo knitting or weaving to join them together. This process Biaxial tensile geogrid increases their tenacity and makes the finished product more resistant to damage. In some cases, the geogrid is then coated with a bituminous material or a layer of polyvinyl chloride to protect it from water and other contaminants.
Once the geometry has been simulated, the model can be meshed and subjected to heat transfer and biaxial stretching simulations. The resulting stress and strain map can be used to evaluate the performance of a geogrid.
To test the tensile strengths of a triaxial geogrid, we modeled and analyzed its mechanical properties at room temperature. We sampled the elongation at break, tensile strength and multidirectional average tensile strength of an industrial PP triaxial geogrid with different pre-punched hole diameters.