Drainage cells are primarily manufactured from High-Density Polyethylene (HDPE) and Polypropylene (PP), two durable engineering plastics known for their excellent mechanical strength, chemical resistance, and long service life. HDPE is the most commonly used material because it offers exceptional compressive strength while remaining lightweight, allowing drainage cells to support heavy loads without collapsing. These materials are resistant to moisture, chemicals, fungi, bacteria, and corrosion, ensuring consistent performance even in permanently wet underground environments. They are also stabilized against ultraviolet (UV) radiation when temporary outdoor exposure is expected during construction. The modular open-core design provides a high void ratio that maximizes water storage and drainage capacity while maintaining structural stability. Many drainage cells are compatible with geotextile fabrics, which act as filtration layers to prevent soil particles from entering and clogging the drainage system. These material characteristics ensure reliable long-term drainage performance with minimal maintenance requirements.
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