Lightweight, High-Strength Composite Geogrid
Lightweight, high-strength composite geogrids are a new type of geogrid manufactured from polypropylene as the core material using a multi-layer melt‑extrusion process. The product features a three‑layer composite structure, with the top surface layer (white), the intermediate layer (black), and the bottom surface layer (white) arranged sequentially from top to bottom. Combining both “lightweight” and “high strength,” it represents an upgraded alternative to conventional geogrids.
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Lightweight, high-strength composite geogrids are suitable for use in highway, railway, airport, port, and municipal road projects.
| Specification Item | TGQG-200 | TGQG-280 | TGQG-350 | TGQG-550 | TGQG-700 |
|---|---|---|---|---|---|
| Radial modulus ≥ (kN/m) | 200 | 280 | 350 | 550 | 700 |
| Secant modulus at 2% elongation ≥ (kN/m) (in the 0° and 90° directions) | 235 | 320 | 400 | 630 | 800 |
| Nominal elongation ≤ (%) (in the 0° and 90° directions) | Unified Requirements 15 | 15 | 15 | 15 | 15 |
| Laminate thickness ≥ (mm) | Unified requirement 0.3 | 0.3 | 0.3 | 0.3 | 0.3 |
| UV resistance retention rate ≥ (%) | Unified Requirement 90 | 90 | 90 | 90 | 90 |
◆ Technical Specifications for Polypropylene Filament Geotextiles Used at Airports
| Test Item | Indicator | |
|---|---|---|
| Geotextile fully laid between the base course and the surface course | Geotextile locally laid on the subgrade | |
| Mass per unit area (g/m²) | 100~160 | 100~200 |
| Thickness ≤ (mm) | 0.6 | 1.0 |
| Tensile strength ≥ (kN/m) | 5.5 | 5.5 |
| Elongation at maximum load ≥ (%) | 30 | 30 |
| CBR puncture resistance ≥ (kN) | 1.0 | 1.0 |
| Trapezoidal tear strength ≥ (kN) | 0.27 | 0.15 |
| Tensile force at 5% elongation ≥ (kN/m) | 2.7 | - |
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Uniaxial geogrid, made of high molecular polymer, is extruded into sheet and then punched into regular mesh pattern,and finally stretched in the longitudinal direction.
PP biaxial geogrid is manufactured from PP, it is produced through the process of extruding, punching, heating, longitudinal and transverse stretching.
Fiberglass geogrid is knitted by glass fiber filaments and coated with bitumen to provide a good bond with the asphalt layers, can strengthen the asphalt layer, extend the service life of pavement layers and decrease the occurrence rate of reflective cracking under cyclic traffic load.
Polyester geogrid is made of high strength polyester industrial yarnjt is warp knitted and coated with PVC.lt can be applied to soft soil foundation treatment and reinforcement of subgrade,dam and other projects,so as to improve project quality and reduce project cost.
Multiaxial Geogrid is one kind of plastic geogrid with a stable network structure formed by extruding, punching, and four-direction stretching.
PP Mining geogrid is made of modified polypropylene and other high molecular polymers by extrusion and stretching.
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Taian Road Engineering Materials Co., Ltd.