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5kg Reinforced Utility Trench GCL

Geosynthetic Clay Liner(GCL) is also named sodium bentonite composite waterproof pad. This is to make high swelling sodium bentonite filling into the inside between special composite geotextile and non-woven fabric. The bentonite impermeable cushion that made of acupuncture method can form a lot of small fiber spaces. This is to make the bentonite particles cannot flow in one direction. When encountering water, it can form uniformly high density colloidal waterproof layer in the pad, and effectively prevent water leakage. Geosynthetic clay liner is suitable for artificial lake water, landfill, underground garage, roof garden, pool, oil depot and chemicals yard.
Availability:
  • 4000-6000g/m2

  • Yingfan


Product Overview

Our 5kg Reinforced Geosynthetic Clay Liner (GCL) is a high-performance hydraulic barrier designed specifically for utility trench projects and environmental protection applications. Combining natural sodium bentonite with reinforced geotextile layers, this GCL delivers exceptional waterproofing and seepage control, outperforming traditional compacted clay liners in efficiency and reliability. Engineered for easy installation in municipal trenches, wastewater systems, and underground infrastructure, it creates a permanent, self-healing barrier that protects soil and groundwater from contamination. Trust this reinforced GCL to ensure the safety and durability of your utility trench projects.

5000g/Sqm Geosynthetic Clay Liner (GCL) with Sodium Bentonite for Landfill

Technical Specifications & Material Details

Table of Technical Parameters

Parameter

Test Standard

Value

Unit Weight

ASTM D5993

5000 g/m² (5kg/m²)

Sodium Bentonite Content

ASTM D5890

≥ 3.6 kg/m²

Hydraulic Conductivity

ASTM D5887

≤ 5×10⁻¹¹ m/s

Tensile Strength

ASTM D4632

≥ 600 N/100mm

Elongation at Break

ASTM D4632

≥ 10%

Peel Strength

ASTM D6496

≥ 40 N/100mm

Swell Index

ASTM D5890

≥ 24 ml/2g

Moisture Content

ASTM D2216

≤ 12%

Core Material & Construction

Core layer: High-quality sodium bentonite with exceptional swell capacity (20-28 times when hydrated) .

Reinforcement layers: Upper nonwoven geotextile and lower woven geotextile, bonded via needle-punching technology .

No chemical binders used—mechanical bonding ensures structural integrity and environmental safety .

Bentonite particles are evenly distributed to guarantee uniform waterproofing performance across the entire liner .


Core Advantages

Superior Seepage Control: Forms a dense colloidal barrier when hydrated, with permeability 100 times better than compacted clay .

Self-Healing Capability: Sodium bentonite repairs up to 2mm cracks automatically, adapting to soil settlement and structural movement .

Reinforced Durability: Needle-punched geotextile layers enhance tensile strength and resistance to punctures during installation .

Efficient Installation: Lightweight and easy to deploy, reducing labor and equipment costs compared to traditional clay liners .

Eco-Friendly Design: Natural bentonite is inorganic and non-toxic, ensuring no environmental pollution .

Temperature Resistant: Performs reliably in extreme cold or heat without brittleness or degradation .


5000g/Sqm Geosynthetic Clay Liner (GCL) with Sodium Bentonite for Landfill


Versatile Application Scenarios

Utility Trench Projects

Municipal water and sewage pipelines: Prevents leakage and protects pipelines from soil corrosion.

Gas and oil utility trenches: Creates a secondary containment barrier for environmental safety.

Electrical and communication trenches: Shields cables from moisture and soil erosion.

Environmental Protection

Landfill liners and caps: Blocks harmful leachate from contaminating groundwater .

Wastewater treatment facilities: Lines lagoons, ponds, and sludge drying beds .

Hazardous waste storage areas: Provides secure isolation for toxic substances.

Civil & Infrastructure

Underground garages and basements: Waterproofs foundations and retaining walls .

Canal and reservoir liners: Reduces water seepage and improves water conservation.

Mine tailings dams: Prevents heavy metal leakage into surrounding soil and water .


Quality Assurance & Safety

Complies with international standards including ASTM D5890, ASTM D5887, and ISO 14001 environmental certification .

Each roll undergoes strict quality testing, with certified results for bentonite content, permeability, and tensile strength .

Meets USDA Material Specification 595 requirements for geosynthetic clay liners .

Free of harmful substances, suitable for potable water and environmentally sensitive areas.


Installation & Maintenance Guidelines

Installation Steps

Prepare the subgrade: Remove sharp rocks, roots, and debris; compact to ensure a smooth, stable surface .

Unroll the GCL with the nonwoven side facing up; overlap adjacent rolls by 15-20cm for seamless waterproofing.

Secure edges with soil nails or bentonite tape; avoid stretching the liner during placement.

Hydrate lightly with water to activate the bentonite, ensuring full swelling and barrier formation .

Maintenance Guidelines

Store rolls indoors or under UV protection to prevent moisture absorption before installation .

Avoid placing heavy equipment directly on the installed liner; use protective boards for access.

Inspect periodically for damage—repair tears with GCL patches and bentonite powder.

For long-term projects, monitor hydraulic performance every 2-3 years.


FAQ

How long does the waterproofing effect last?

The natural bentonite material does not age or degrade, providing permanent waterproofing for over 50 years.

Can it be used in acidic soil conditions?

Yes, the reinforced geotextile layers and bentonite core resist acids, alkalis, and salts .

What is the minimum temperature for installation?

It can be installed in temperatures as low as -10°C without losing performance.

Do I need special training to install this GCL?

Basic construction knowledge suffices, but we recommend following our installation manual or consulting our technical team.


Call to Action

Protect your utility trench projects and the environment with our 5kg Reinforced Geosynthetic Clay Liner. Request a detailed product datasheet today, get a competitive quote tailored to your project size, or schedule a technical consultation with our geosynthetic experts. Invest in a reliable waterproofing solution that saves time, reduces costs, and ensures long-term safety.

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Sales manager: Raying Xie
   +86-181-1627-9536
  +86-181-1627-9536
   xieruiqing@shyfem.com
  No.189 Kanggong Rd, Zhujiajiao Industrial Park, Qingpu District, Shanghai China 201713
 
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