Warp Knitted Geogrid For Asphalt Pavement Road Construction
Polyester Geogrid Mesh
Polyester geogrid is a geosynthetic material made of polyester
fiber and warp knitted directional structure. It has the
characteristics of high strength and corrosion resistance and is
widely used in the field of civil engineering.
Materials and Structure
1. Raw Materials and Process
·Using high-strength polyester polyester fiber or polypropylene
fiber as raw materials, it is woven through warp knitting
directional structure, and the intersection is reinforced with
high-strength fiber filaments to form a strong connection point.
·Some products are PVC coated to enhance weather resistance and
interlocking force with soil.
2. Structural Features
·The warp and weft yarns are not bent, forming a flat mesh
structure with small vertical and horizontal strength differences.
·The mesh size is large, the water permeability is good, and it can
effectively lock the filler.
Performance characteristics
1. Mechanical properties
· High tensile strength: up to 150MPa, suitable for high load
scenarios.
· Low elongation: usually less than 13%, delaying road reflective
cracks.
· Strong tear resistance: intersection reinforcement design
improves overall stability.
2. Durability
· Resistant to UV aging, wear, acid and alkali corrosion, long
service life.
· Good compatibility with asphalt mixture, suitable for road crack
prevention.
PET Biaxial Polyester Geogrids Technical Specification (ASTM/ISO
Standards)
| Property | PET-200 | PET-500 | PET-1000 | PET-2000 | Test Method |
|---|
| Tensile Strength (MD/CMD) | 200×200 kN/m | 500×500 kN/m | 1000×1000 kN/m | 2000×2000 kN/m | ISO 10319 |
| Elongation at Break | ≤13% | ≤13% | ≤13% | ≤13% | ASTM D6637 |
| Creep Limit (50 yrs) | ≤1.5% | ≤1.5% | ≤2% | ≤2.5% | ISO 13431 |
| Aperture Size | 50.8x50.8mm | 50.8x50.8mm | 50.8x50.8mm | 50.8x50.8mm | EN ISO 10318-1 |
Application fields
1. Road engineering
· Soft soil roadbed reinforcement, retaining wall reinforcement,
bridge abutment foundation reinforcement.
· Delaying reflective cracks on asphalt pavement and extending road
life.
2. Water conservancy projects
· Reinforcement of embankments and rivers to improve shear
resistance and stability.
3. Slopes and slope protection
· Embankment slope protection, landslide control.
4. Other scenarios
· Railway ballast protection, reclamation projects, environmentally
friendly buildings, etc.
Construction method
1. Key points for laying
· The site needs to be flat and compacted, and the main force
direction of the geogrid is perpendicular to the axis of the
embankment.
· After tensioning and fixing, the overlap width is not less than
10cm to avoid wrinkles.
2. Filler requirements
· Avoid using low-quality fillers such as frozen soil and swamp
soil, and give priority to sand and gravel materials.
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