Steel-Plastic Geogrid for Soft Soil Foundation Reinforcement
Core Advantages and Performance
• High Strength and Low Elongation: Tensile strength in both longitudinal and transverse directions can reach 50–200 kN/m, with a fracture elongation of ≤3%. The material resists deformation under heavy loads and exhibits excellent creep resistance.
• Strong Interlocking Bond: The surface is embossed with rough textures or protruding nodules, significantly increasing the friction coefficient with backfill soil, enabling "reinforcement-soil interaction" for coordinated load bearing.
Steel-plastic geogrids are a high-performance geosynthetic material widely used in soft ground reinforcement, effectively improving subgrade bearing capacity, controlling settlement, and enhancing overall stability.
They feature high-strength galvanized steel wire as the load-bearing framework, encased in a high-density polyethylene (PE) protective layer, and formed into a mesh structure through extrusion compounding and ultrasonic welding processes. This "steel + plastic" composite design combines the high strength of steel with the corrosion resistance of plastic, making it particularly suitable for long-term burial in soil.
Ⅰ. Core Advantages and Performance
• High Strength and Low Elongation: Tensile strength in both longitudinal and transverse directions can reach 50–200 kN/m, with a fracture elongation of ≤3%. The material resists deformation under heavy loads and exhibits excellent creep resistance.
• Strong Interlocking Bond: The surface is embossed with rough textures or protruding nodules, significantly increasing the friction coefficient with backfill soil, enabling "reinforcement-soil interaction" for coordinated load bearing.
• Corrosion Resistance and Long Service Life: The PE layer protects against erosion from acids, alkalis, saline soils, and groundwater, ensuring a service life of 50 years or more.
• Construction Convenience: Available in widths up to 6 meters, enabling high laying efficiency. Supports overlapping and fixation without the need for complex equipment.
Ⅱ. Key Roles in Soft Soil Subgrade
• Load-Bearing Capacity Enhancement: Through the interlocking mechanism between the geogrid and soil, concentrated loads are uniformly distributed, significantly improving the overall bearing capacity of the subgrade.
• Settlement Control: Effectively restricts lateral displacement of soil, reducing total settlement by more than 40%. In particular, it controls differential settlement at junctions between new and existing subgrades, preventing pavement cracking.
• Accelerated Consolidation: Acts as a drainage channel to facilitate the discharge of water from soft soil, thereby accelerating the subgrade consolidation process.
• Prevention of Lateral Squeezing: In high embankment sections, inhibits soft soil from uplifting laterally under pressure, ensuring subgrade stability.
