Uniaxial Tensile Plastic Geogrid
Core Advantages:
·High Strength and Low Deformation: Tensile yield strength ranges from ≥25 kN/m to ≥200 kN/m, suitable for heavy-duty traffic and weak subgrades.
·Environmental Aging Resistance: Enhanced with additives such as carbon black, offering resistance to UV radiation, acid, alkali, corrosion, and low temperatures; ensures stable performance in extreme environments down to -50°C, and has been successfully applied in the Qinghai–Tibet Railway permafrost project.
Uniaxial tensile plastic geogrid is a high-strength geosynthetic material primarily made from high-density polyethylene (HDPE) or polypropylene (PP), manufactured through extrusion, punching, and uniaxial stretching processes. It is commonly designated as TGDG and is widely used in civil engineering for soil reinforcement and stabilization applications.
The material achieves linear alignment of polymer chains along the stress direction through oriented stretching, forming a uniformly distributed, ellipsoidal mesh structure with high node strength. This significantly enhances tensile strength and stiffness. Its longitudinal tensile strength can reach 100–200 MPa, approaching that of mild steel, while maintaining an elongation at break of ≤10%. The material exhibits excellent creep resistance and long-term durability.
Ⅰ. Core Advantages:
·High Strength and Low Deformation: Tensile yield strength ranges from ≥25 kN/m to ≥200 kN/m, suitable for heavy-duty traffic and weak subgrades.
·Environmental Aging Resistance: Enhanced with additives such as carbon black, offering resistance to UV radiation, acid, alkali, corrosion, and low temperatures; ensures stable performance in extreme environments down to -50°C, and has been successfully applied in the Qinghai–Tibet Railway permafrost project.
·Efficient Installation: Lightweight and flexible, easy to cut and join; during installation, the longitudinal axis must align with the primary stress direction, and overlapping sections should be secured with plastic straps and U-shaped nails.
·Cost-Effective and Eco-Friendly: Reduces base layer thickness by up to 36%, cuts construction costs by 20%–50%, extends service life, and conserves land resources.
Ⅱ. Main application areas:
·Reinforcement of weak foundations: Enhancing bearing capacity and controlling settlement, applicable to highway and railway subgrades
·Pavement reinforcement: Placed at the base of asphalt or concrete pavements to reduce rut depth and extend fatigue life
·Slopes and retaining walls: Improving the self-stability of backfill soil, reducing footprint, and enhancing structural safety
·River, coastal, and dyke protection: Used in combination with gabions to prevent erosion-induced collapse caused by water flow
·Landfill engineering: Integrated with impermeable systems to address differential settlement and gas emission issues
