GCL Liner

Self-Sealing: Sodium bentonite swells up to 15× when wet, sealing punctures and maintaining waterproofing.

Eco-Friendly: Made from natural, non-toxic materials—ideal for green infrastructure and sensitive environments.

Fast Installation: Lightweight rolls reduce labor and time vs. traditional liners.

Chemically Resistant: Withstands hydrocarbons, salts, and mild acids/bases—suitable for industrial and landfill use.

Flexible & Adaptive: Conforms to uneven ground and tolerates movement without cracking.

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Product Details

Product Introduction

The Sodium Bentonite Geosynthetic Clay Liner (GCL) is a cutting-edge composite waterproofing material designed for superior containment and sealing applications. It consists of natural sodium bentonite encapsulated between two layers of durable geotextiles—a woven fabric on one side and a nonwoven fabric on the other. This structure not only enhances mechanical strength but also prevents the migration of bentonite, ensuring long-term impermeability.

Manufactured by Haoyang Environmental Co., Ltd., a trusted leader in geosynthetic materials since 2008, our 4800g GCL represents the latest innovation in environmental protection and construction waterproofing. Backed by rigorous R&D and advanced production technology, it offers outstanding self-sealing, swelling, and chemical resistance properties, making it ideal for complex and eco-sensitive engineering projects.

GCL Liner

Product Specifications

item		technical standard	results	evaluation
mass per unit area of GCL （g/㎡）		≥4800	4824	qualified
mass per unit area of sodium bentonite（g/㎡）		/	4508	qualified
expansion index of sodium bentonite（ml/2g）		≥24	24.0	qualified
durability of expansive clay（ml/2g）		≥20	21.0	qualified
tensile strength（N/100mm）	in the longitudinal direction	≥600	1411	qualified
elongation at maximum load（％）		≥10	14	qualified
peel strength（N/100mm）		≥40	53.3	qualified
vertical permeability coefficient（m/s）		≤5.0x10-11	4.0x10-11	qualified
filtration loss（ml）		≤18	16.2	qualified
ethylene blue adsorbed（g/㎡）		≥30	33	qualified
resistance to hydrostatic pressure(0.4Mpa,1h)		no leakage	no leakage	qualified
mass per unit area of nonwoven fabrics（g/㎡）		≥200	204	qualified
mass per unit area of flat fiber woven fabrics（g/㎡）		≥110	113	qualified

Price

The following presents an illustrative price list for 4800g Sodium Bentonite Geosynthetic Clay Liners (GCL), serving as a handy reference:

Item	Specification	Price (USD/square meter)	Minimum Order Quantity (MOQ)	Delivery Time	Remarks
Standard Sodium Bentonite GCL	4800g/m²	3.00	1000 square meters	7 - 15 business days	Incorporates needle-punched reinforcement, with optional film lamination available.
Sodium Bentonite GCL (Film Laminated Variant)	4800g/m² + 0.2mm HDPE film	3.50	1000 square meters	10 - 20 business days	Ideally suited for applications demanding high anti-seepage performance.
Sodium Bentonite GCL (Composite Version)	4800g/m² + PET non-woven fabric	3.20	1000 square meters	10 - 15 business days	Significantly bolsters tensile strength, making it apt for particular and challenging scenarios.
Sodium Bentonite GCL (Customized Dimensions)	Customized thickness and weight	Priced as per specific requirements	500 square meters	15 - 25 business days	Tailored precisely to your individual needs.

Price Guidelines:

Shipping Expenses: Please note that the quoted prices do not encompass shipping costs. These will be computed based on the destination market.

Packaging Particulars: Typically, the products are packaged using waterproof plastic film along with pallets. Each roll measures between 20 and 50 meters in length.

Volume Discount: When your order quantity hits 5000 square meters or exceeds it, you become eligible for an attractive discount.

For more comprehensive pricing details or bespoke customization blueprints, kindly furnish your project prerequisites, such as the intended application scenarios, exact specification demands, and the delivery address. This will enable us to furnish you with a more accurate quotation.

Application Scenarios

GCLs with sodium bentonite are wildely used in the following area:

◢ Landfills: GCLs are commonly used in landfill liners and caps to prevent the leachate (liquid that has percolated through a landfill) from contaminating underlying soil and groundwater. Geosynthetic clay liners serve as a barrier to control the migration of harmful substances, such as heavy metals and organic compounds, from the landfill waste into the surrounding environment.

GCL Liner

◢ Waterproofing: GCLs are also used in waterproofing applications for structures such as dams, canals, and reservoirs. They act as a barrier to prevent water seepage, protecting structures from potential damage caused by water infiltration.

GCL Liner

◢ Road and Rail Construction: GCLs can be used in road and rail construction to provide slope stabilization and erosion control. They help prevent soil erosion and water infiltration, maintaining the stability of embankments and cut slopes.

GCL Liner

◢ Pond and Canal Liners: GCLs are used in the construction of pond and canal liners to prevent water seepage and enhance water retention.

◢ Tunnel Construction: GCLs can be applied in tunnel construction to provide waterproofing and prevent water ingress into tunnels.

Advantages of GCL

◢ Cost-Control GCLs can offer cost savings compared to traditional clay liners in terms of material costs, transportation, and installation. Their ease of installation and versatility contribute to their cost-effectiveness.

◢ Long-Term Performance When properly installed and maintained, GCLs can provide long-term performance. The self-sealing properties and durability of the sodium bentonite contribute to the effectiveness and longevity of the liner in various applications.

◢ Self-Sealing Properties The sodium bentonite in GCLs has self-sealing properties. If the liner is punctured, the bentonite swells to fill and seal the puncture, helping to maintain the integrity of the liner over time.

◢ High Swelling Capacity Sodium bentonite in GCLs has a high swelling capacity when hydrated, providing an additional layer of protection against water migration. This swelling property enhances the overall performance of the liner in terms of impermeability.

◢ Ease of Installation GCLs are relatively easy to install compared to traditional clay liners. They come in large rolls or panels, making them convenient for transportation and installation. This can result in cost savings and faster construction times.

GCL Liner

Why choose Haoyang GCL?

◢ Cost-Control

GCLs can offer cost savings compared to traditional clay liners in terms of material costs, transportation, and installation. Their ease of installation and versatility contribute to their cost-effectiveness.

◢ Long-Term Performance

When properly installed and maintained, GCLs can provide long-term performance. The self-sealing properties and durability of the sodium bentonite contribute to the effectiveness and longevity of the liner in various applications.

GCL Liner

◢ Self-Sealing Properties

The sodium bentonite in GCLs has self-sealing properties. If the liner is punctured, the bentonite swells to fill and seal the puncture, helping to maintain the integrity of the liner over time.

◢ High Swelling Capacity

Sodium bentonite in GCLs has a high swelling capacity when hydrated, providing an additional layer of protection against water migration. This swelling property enhances the overall performance of the liner in terms of impermeability.

◢ Ease of Installation

GCLs are relatively easy to install compared to traditional clay liners. They come in large rolls or panels, making them convenient for transportation and installation. This can result in cost savings and faster construction times.

About Haoyang Environmental Co., Ltd

With over 20 advanced production lines and more than 15 years of experience, Haoyang is one of China's leading manufacturers of geosynthetic and geotextile materials. Our product range includes: