Weiwo™ Engineering Grade Geogrid
Weiwo is designed for extreme road conditions
Based on "mechanical interlocking" and "stress dissipation" technologies, we provide a complete range of geosynthetic material solutions, from soft soil foundation reinforcement to asphalt pavement crack resistance, which can reduce the total life cycle maintenance cost by up to 40%.
Strengthening the bearing capacity of weak foundations
Engineering Challenges: When traversing clay or wetlands, extremely low CBR values often lead to uneven settlement and shear failure.
The Weiwo BX series bidirectional geogrid utilizes the "Tensioned Membrane Effect" to convert vertical loads into horizontal tensile stresses. Through the mechanical interlocking of the geogrid and aggregate, load distribution is effectively diffused, preventing lateral displacement of the roadbed.
- Increases bearing capacity by ≥ 50%
- Reduces crushed stone layer thickness by 30%
Preventing reflective cracking in asphalt pavements
Project Challenges: During road reconstruction, cracks in the original base layer can rapidly propagate upwards, causing short-term failure of the newly paved surface.
We use high-strength fiberglass geogrid as a stress-absorbing layer. Its extremely high tensile modulus dissipates stress concentration at crack tips, inhibits longitudinal crack development, and significantly improves the fatigue life of the asphalt surface layer.
- Extends maintenance cycle by 3-5 years.
- Resistant to construction temperatures above 200°C.
Steep slopes and reinforced earth retaining walls
Engineering challenges: Limited space in mountainous highways; traditional concrete retaining walls are expensive, slow to construct, and have weak earthquake resistance.
Utilizing the "quasi-static creep strength" of the Weiwo UX series unidirectional geogrid. The geogrid anchors the soil over long distances, forming a flexible, integral structure. This not only significantly reduces the land area required but also adapts to uneven settlement.
- Supports reinforcement on steep slopes up to 90°.
- Saves 40% on costs compared to traditional solutions.
Weiwo Series Product Technical Specifications (TDS)
| Product Model | Core Function | Ultimate Tensile Strength (kN/m) | Primary Material |
| Weiwo-BX™ 20/30 | Biaxial Subgrade Stabilization | 20 – 50 | PP (Polypropylene) |
| Weiwo-FG™ Pro | Asphalt Reinforcement & Anti-Cracking | 50 – 120 | Fiberglass + Bitumen Coating |
| Weiwo-UX™ Elite | High-Load Reinforced Soil Walls (MSE) | 100 – 200 | HDPE / High-Tenacity Polyester |
How does a road geogrid reduce project costs?
Weiwo geogrids reduce costs primarily through Aggregate Optimization. By providing lateral confinement to the base course, our geogrids increase the modulus of the aggregate layer. This allows engineers to reduce the required thickness of the crushed stone base by up to 30-40% without sacrificing load-bearing capacity. Additionally, it minimizes excavation depth and hauling costs, significantly lowering the project's carbon footprint.
What is the difference between Biaxial (BX) and Uniaxial (UX) geogrids in road construction?
The choice depends on the direction of the load.
Biaxial Geogrids (BX): Designed to provide strength in both longitudinal and transverse directions. They are ideal for subgrade stabilization and pavement reinforcement where traffic loads are distributed across the surface.
Uniaxial Geogrids (UX): Specifically engineered to handle high tensile loads in one direction. These are predominantly used for Reinforced Soil Slopes (RSS) and Mechanically Stabilized Earth (MSE) retaining walls, where the primary stress comes from the lateral pressure of the soil mass.
Can Weiwo geogrids effectively prevent reflective cracking in asphalt overlays?
Yes. Our Weiwo-FG™ Pro (Fiberglass Geogrid) is specifically designed for this purpose. When placed between the old pavement and the new asphalt overlay, it acts as a Stress Absorbing Membrane Interlayer (SAMI). Its high tensile modulus and low-elongation characteristics allow it to intercept and dissipate the stress concentrations from cracks in the lower layers, effectively delaying reflective cracking for several years.
How do I choose the correct aperture size (opening) for my geogrid?
The aperture size must be matched to the Gradation of the Infill Material. For maximum efficiency, the geogrid relies on "Mechanical Interlock"-where the aggregate particles lodge within the grid openings. As a general engineering rule, the D50 (median particle size) of the aggregate should be compatible with the aperture dimensions to ensure the particles are confined rather than simply sitting on top of the grid.
What is the design life of Weiwo geogrids in harsh environmental conditions?
Weiwo geogrids are manufactured from high-grade polymers (PP, HDPE, or PET) with added UV stabilizers and Carbon Black. They are chemically inert and resistant to biological degradation, as well as acidic or alkaline soil conditions (pH range 2-12). Under standard road design conditions, our geogrids are engineered for a service life of 50 to 100 years, maintaining high Long-Term Design Strength (LTDS) throughout the period.