Name: Geosynthetic Clay Liner (GCL) — Professional Seepage Control by Nuokun Geo
Availability: InStock

Advanced Seepage Control Solutions by Nuokun Geo

Trusted by 1000+ Clients Across Region Quality Without Borders – Your Global Supply Partner

Product Overview | What Is GCL?

The Geosynthetic Clay Liner (GCL) manufactured by Nuokun Geo is an engineered composite barrier designed for modern seepage control applications.

It consists of premium natural sodium bentonite encapsulated between layers of high-strength geotextiles, mechanically bonded through needle-punch reinforcement.

When hydrated, the bentonite transforms into a highly impermeable gel layer with extremely low hydraulic conductivity, offering an efficient and eco-friendly alternative to traditional compacted clay liners.

Customized types such asreinforced GCL, and geomembrane-coated GCL are available.

Key Technical Advantages of Nuokun Geo GCL

1. High-purity Bentonite With Superior Swelling Capacity

Nuokun Geo selects high-grade sodium bentonite with excellent ion-exchange capacity. Upon hydration, it forms a continuous, dense, and uniform sealing layer that effectively blocks liquid migration.

2. Reinforced Needle-Punch Structure for Long-Term Stability

Our three-dimensional needle-punching process firmly locks the geotextiles together, preventing bentonite displacement even on steep slopes or irregular terrain.

3. Ultra-Low Permeability Comparable to Natural Clay Layers

The hydraulic conductivity of Nuokun GCL can reach as low as 10⁻⁹ cm/s, ensuring long-lasting seepage resistance in demanding environments.

4. Excellent Environmental Resistance

The product is engineered to withstand chemical exposure, freeze-thaw cycles, and environmental stress—maintaining stability over decades.

5. Lightweight & Easy Installation

Compared with traditional compacted clay liners, GCL is significantly lighter, easier to transport, and installs rapidly without heavy machinery—dramatically reducing overall project costs.

6. Outstanding Self-Healing Ability

In the event of small punctures or minor structural disturbances, the bentonite swells to fill gaps automatically, restoring its barrier function.

Types & Parameters

Parameter	Value Range	Notes
Specifications	3-layer，4-layer	Can be covered with geomembrane (conventional 3 layers)
Width	2-6 m	customizable
Length	1-30 m	Depends on thickness
Bentonite swelling index (mL/2g)	≥ 24	Compliant with GRI/ASTM standards
tensile strength	≥ 700(N/100mm)	High flexibility
permeability coefficient/(m/s)	≤5.0x10-12	High parameters
Filtration loss / mL	≤18	High parameters

Application Fields

Nuokun Geo GCL is widely used for environmental protection and seepage control, including:

• Municipal and hazardous waste landfills

• Tailings dams and heap-leaching pads

• Artificial lakes, ponds, canals, dams

• Underground structures and tunnel waterproofing

• Reservoirs, firewater storage, irrigation ponds

• Oil & gas containment areas

• Contaminated site isolation and remediation

We offer complete barrier system solutions tailored to specific project needs

Product & Service Advantages of Nuokun Geo

● Strict Quality Control

All batches are produced and tested according to ASTM / GRI standards, including swell index, permeability, tensile strength, and mass per unit area.

● High Customizability

Available product types include:

• Reinforced needle-punched GCL

• Geomembrane-coated GCL (GCL + HDPE)

• Anti-salt GCL

• Heavy-duty barrier GCL

● Professional Technical Support

From material selection to installation guidance, Nuokun Geo provides full technical assistance.

Featured Application Cases

1. Large Municipal Landfill Project

Nuokun GCL was used in a multilayer composite liner system with HDPE geomembrane, significantly improving leakage protection and meeting strict environmental regulations.

2. Landscape Artificial Lake Project

The material effectively adapted to differential settlement and ensured long-term water retention while reducing construction time and cost.

3. Mining Tailings Pond Project

Using anti-chemical GCL versions, Nuokun Geo provided reliable protection against metal-laden and high-salinity leachates.

Packing And Delivery

FAQ

1.What's in it for you when you choose us?

Certification: CE/ISO 9001/GRI /ASTM

15-day delivery: Direct from our Shandong manufacturing base (F.O.B. Qingdao Port)

Pre-sample production is always performed before mass production;

Final inspection is performed before shipment;

If you have any questions about us or our products, please feel free to contact us.

2.Can we provide samples? Is there a charge?

Yes, we can provide samples free of charge, but we won't cover the shipping costs.

If you place an order after confirming the sample, we will refund the shipping fee or a portion of the order value.

Hot Tags :

Geosynthetic Clay Liner (GCL) — Professional Seepage Control by Nuokun Geo

Applications of Geosynthetic Clay Liners in water containment

Benefits of using Geosynthetic Clay Liner in hydraulic engineering

Geosynthetic Clay Liner applications in mining and oil/gas industries

Sustainability aspects of Geosynthetic Clay Liner materials

Geosynthetic Clay Liner performance in environmental protection

Benefits of Geosynthetic Clay Liners

Related Products

Request A Quote