HDPE Geomembrane Welding

HDPE Geomembrane Welding –  Geomembranes are crucial components in modern landfill design, primarily used to prevent leachate from contaminating groundwater and to control gas emissions.A geomembrane is a synthetic, waterproof barrier used to control fluid or gas migration in the environment.

OTHER ARTICLES : Reinforced Polypropylene Geomembrane

# Site Preparation:

• Clearing and Grading
  It is necessary to remove any possible risks, including sharp items, plants, and debris, from the installation area.
• Subgrade Preparation
  The layer directly below the geomembrane, or subgrade, needs to be hard and smooth.The surface needs to be graded to ensure uniformity and lessen undulations that could strain the geomembrane.
• Geotextile Underlay (if required)
  Underneath the geomembrane, a nonwoven geotextile layer can be added for stability and further puncture protection.

# Field Connection

a) Weather Conditions: Avoid installing under bad weather conditions to ensure the quality of the welds.

b) Welding Methods: Employ hot wedge welding, which eliminates the need to add additional materials to the welding process and doesn’t require roughening the film’s surface.

c) Seam Integrity: Ensure that the seams are free from dirt, sand, water, and other debris that could affect the quality of welding.

 

# Exposure Tests #

1) Exposure

• Durability Evaluation: Exposes geomembrane samples to natural environmental conditions to evaluate durability.

2) Water Vapor

• Water Vapor Transmission: Tests the permeability of geomembranes to water vapor.
• These tests help evaluate the performance and durability of geomembranes under various conditions.