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What’s Polyester Geogrid?
Lianyi®Polyester Geogrid(PET Geogrid) is a geosynthetic material mainly made of polyester (polyester fiber) yarns with PVC coating,which is widely used in the fields of reinforcement, strengthening and protection in civil engineering.
Classification Of Polyester Geogrid
Features Of Polyester Geogrid
*High strength: Polyester fibers have a relatively high tensile strength, which can effectively disperse loads and enhance the stability of soil.
*Corrosion resistance: Resistant to acids, alkalis and chemical corrosion, suitable for complex geological environments.
*Creep resistance: Small deformation under long-term loading, and its stability is superior to that of ordinary plastic grating.
*Good flexibility: Adapt to foundation deformation and reduce the risk of cracking.
*Light weight: Convenient for construction, low transportation and laying costs.
Applications Of Polyester Geogrid
*Highway/railway subgrade: Distribute loads to prevent uneven settlement.
*Slope reinforcement: It combines with soil to form a stable structure and prevent landslides.
*Retaining wall: As a reinforcing material, it enhances the shear strength of the wall.
*Soft soil foundation treatment: Reduce settlement and enhance bearing capacity.
*Landfill site: Used for base reinforcement and anti-seepage system protection.
Production process Of Polyester Geogrid
*Raw material: High-strength polyester filament (PET) yarns.
*Process: It is woven into a mesh structure by a warp knitting machine and then treated with a coating (such as PVC or asphalt) to enhance durability.
*Type: It is divided into unidirectional (unidirectional force) and bidirectional (bidirectional force) grating.
Polyester Geogrid Key Points of Construction
*Laying preparation: Clean the base layer to ensure it is flat and free of sharp objects.
*Laying direction: Determine the unidirectional or bidirectional force direction according to the design.
*Lap length: Usually 10-15cm, it needs to be fixed with special connectors.
*Filling material selection: Coarse-grained soil is preferred and compacted in layers (each layer thickness ≤30cm).
*Avoid long-term exposure to ultraviolet rays: Cover and fill soil in a timely manner after construction.
Precautions Of Polyester Geogrid
*Storage: Avoid direct sunlight to prevent aging.
*Construction temperature: Polyester may become brittle at low temperatures, so construction should be avoided in extremely cold environments.
*Design basis: The strength, width and node strength should be selected according to the engineering requirements.
Keywords：
1. PET Geogrid