1. Material Selection & Inspection
Verify that the PET geotextile meets project specifications (thickness, permeability, tensile strength, and UV resistance).
Ensure no damage (tears, holes, or degradation) before installation.
2. Subgrade Preparation
The base must be level, compacted, and free of sharp objects (stones, roots, debris) to prevent punctures.
For filtration, ensure proper soil-geotextile compatibility to avoid clogging (e.g., use a graded filter layer if needed).
3. Installation Process
Unrolling & Alignment:
Avoid excessive stretching or dragging to prevent deformation.
Maintain 50–100 cm overlaps for seams; align rolls in the direction of water flow (for drainage).
Seaming:
Use heat welding, sewing, or chemical bonding for strong, impermeable seams.
Test seam integrity (e.g., air pressure or peel tests).
Anchoring:
Secure edges with trenches, sandbags, or anchor pins to prevent wind uplift or displacement.
4. Protection Measures
Cover the geotextile immediately with a protective layer (soil, gravel, or geomembrane) to prevent:
UV degradation (if exposed for >7 days, use UV-stabilized geotextile).
Mechanical damage from construction traffic or weather.
5. Quality Control & Testing
Conduct on-site inspections for wrinkles, gaps, or misalignment.
Perform hydraulic conductivity tests (for filtration) and seam strength tests.
6. Environmental & Safety Factors
Avoid installation during heavy rain or strong winds to prevent material shifting.
For landfills or contaminated sites, ensure chemical resistance of the PET geotextile.
7. Post-Installation Maintenance
Monitor for clogging, erosion, or seepage in long-term applications.
Repair any exposed or damaged sections promptly.
Note: Proper handling and adherence to design specifications are critical for the anti-seepage and filtration performance of PET geotextiles. Adjust techniques based on site conditions (e.g., slope stability, hydraulic pressure).
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