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GCLtech Geosynthetic Clay Liner

GCL Geosynthetic Clay Liner is a kind of geosynthetic material formed by combining two basic components, geotextile material and sodium bentonite clay. Geotextile material is usually a woven or knit made from polypropylene or polyester fibers.

Sodium bentonite clay is a natural clay mineral and swells when in contact with water, it has a hydraulically swelling property. This property makes bentonite clay an impermeable barrier material.

Geosynthetic clay blankets are produced by covering or embedding sodium bentonite clay with geotextile. In this way, the impermeability of the hydraulically swellable bentonite clay is preserved and the geotextile material provides durability and mechanical support.

In this process, natural bentonite expands about 16-18 times its dry weight and forms an impermeable layer. When water is withdrawn from the environment, it returns to its original state. This cycle is repeated continuously and does not affect the waterproofing properties of the material.

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Geosynthetic Clay Liner


The application method of geosynthetic clay covers may vary depending on the requirements of the project and the intended use. In general, however, correct application of geosynthetic clay blankets can be achieved by following the steps below:
  1. Site Preparation: The application area should be cleaned and properly prepared. If necessary, the floor may need to be leveled or leveled.
  2. Placement of Geosynthetic Clay Cover: The geosynthetic clay cover should be opened and placed properly in the application area. It is common practice to open the cover to cover a few meters from the edges, then loosely drop it and then straighten it.
  3. Preparation of Joints: If more than one piece of blanket will be used in the project, the joints should be prepared so that the joints of the covers are solid. Joints can usually be made by overlapping or heat-welding the cover pieces.
  4. Cover Fixing: The geosynthetic clay blanket should be fixed to the application area. This can usually be done by methods such as stakes, nails or weights. The fastening process prevents the cover from slipping and loosening.
  5. Tightness Control: After the geosynthetic clay blanket has been properly placed to seal, the sodium bentonite clay should be swelled hydraulically. This can usually be accomplished by irrigating the cover or by some other method depending on the needs of the project.
  6. Workmanship Control: Workmanship controls should be carried out during and after the application to prevent damage to the cover and to preserve its integrity. In case of any puncture, tear or damage, repair or replacement should be performed.
Application of geosynthetic clay covers should be done by professional engineers or expert teams. The implementation process must comply with the requirements of the project and local regulations.

Applications of
Geosynthetic Clay Liner

Geosynthetic clay liners are used in various industries and projects for purposes such as environmental protection, soil stabilization, water management and erosion control. Usage areas are determined in accordance with project needs, local regulations and engineering designs.

Storage Areas

Solid Waste Storage

Mine Waste Storage

Industrial Storage Areas

Oil Storage Areas

Pools and Ponds

Swimming Pools

Artificial Lakes

Landscape Ponds

Irrigation Ponds

Construction and Structures

Roads and Highways

Slope Stabilization

Soil Stabilization

Drainage Applications

Landscape and Other Fields

Landscape Applications

Golf and Sports Fields

Environmental Restoration

Agriculture and Water Engineering

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Professional Solutions

With professional solutions, geosynthetic clay cover applications are designed and applied in the best way. We provide services in this field with teams specialized in geotechnical engineering and environmental protection.

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Quality Products

Quality products have important features such as durability, waterproofing and longevity and offer reliable performance in application areas.

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You can get information about our products by contacting us immediately. We are waiting for you for solutions suitable for your projects.


Our Address Information:

Yayla Mh. Özgür Sokak No:24 B Tuzla-İstanbul / Türkiye

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As İYS TEKNİK, we are a comprehensive and leading company in the field, providing geotechnical solutions to many of our customers around the world, producing and applying geosynthetic materials, with our long years of experience since our establishment.

We produce, apply and sell the geosynthetic products of our company, which is 100% Turkish capital, used in many projects in Turkey and abroad.

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