Types of Geomembrane
Geomembrane is a highly effective synthetic membrane barrier designed to control the migration of liquids or gases within engineered structures or projects. Various types of geomembranes are available, each differing based on the resin used in their production. Below is a summary of the most commonly utilized geomembranes.
► HDPE Geomembrane
High-Density Polyethylene (HDPE) geomembranes are known for their excellent UV resistance, affordable material, and outstanding durability. This type of geomembrane is the most widely utilized due to its thicker profile compared to other options. It is ideal for applications such as pond and canal linings, landfill containment, and reservoir coverage. Additionally, its chemical resistance allows HDPE to be suitable for safely storing potable water.
► LLDPE Geomembrane
LLDPE (Linear Low-Density Polyethylene) geomembrane is manufactured using high-quality virgin polyethylene resins, providing a robust and durable solution with resistance to UV light and low temperatures. Engineers often prefer LLDPE when seeking a flexible and impermeable geomembrane, as it is particularly useful in industrial contexts, including environmental and animal waste containment, along with liquid storage tanks.
► PVC Geomembrane
PVC (Polyvinyl Chloride) geomembranes comprise a thermoplastic waterproof material formulated with vinyl, plasticizers, and stabilizers. The production process involves cracking ethylene dichloride into a dichloride, which is then polymerized to yield the polyvinyl chloride resin required for PVC geomembranes. Renowned for their resistance to tearing, abrasion, and punctures, PVC geomembranes serve effectively in constructing canals, landfills, soil remediation projects, wastewater lagoon liners, and tank linings. They are also an excellent choice for preserving potable drinking water and safeguarding it against contamination.
► TRP Geomembrane
A TRP (Reinforced Polyethylene) geomembrane leverages polyethylene fabric for enhanced long-term water containment and industrial waste management. These geomembranes are well-suited for soil remediation, landfill projects, lining canals, and constructing temporary ponds. Their resistance to low temperatures, chemicals, and UV exposure contributes to their versatility and effectiveness in agricultural and municipal applications.
► RPP Geomembrane
RPP (Reinforced Polypropylene) geomembranes consist of polyester-reinforced liners made from a UV-stabilized polypropylene copolymer, ensuring stability, chemical responsiveness, and flexibility. The inherent strength and durability of RPP geomembranes stem from the support provided by a nylon scrim. Their applications are optimal for long-term water containment and industrial waste scenarios, specifically in municipal use, evaporation pond linings, and horticulture, as well as mine tailings.
► EPDM Geomembrane
EPDM (Ethylene Propylene Diene Monomer) geomembranes are characterized by their rubber-like texture, which provides durability, strength, UV stability, and flexibility. These membranes perform exceptionally well in extreme weather conditions, exhibiting resilience against punctures. EPDM geomembranes are easy to install and are primarily used as surface barriers in dams, liners, and covers, as well as for various irrigation projects.