Waste Containment

Waste Not, Want Not

With proven waste containment technology, our Geosynthetic Clay Liners (GCLs) can protect against contamination from a wide spectrum of waste materials. With a full range of product formulations combined with our proven expertise, we engineer solutions customized for individual site requirements.


No matter your site challenges, CETCO can help you meet them.



Why geosynthetic containment systems?

Featuring our proprietary, high-density needlepunched construction, CETCO GCLs outperform compacted clay liners in both performance and ease-of-installation. GCLs provide significant advantages over compacted clay, including: 

  • Increased hydraulic performance - At a thickness of less than an inch, GCLs outperform compacted clay liners that are several dozen times thicker
  • Self-sealing and self-seaming - CETCO GCLs combine two kinds of barriers—passive and active—to substantially reduce the possibility for leaks. The traditional passive membrane barrier blocks water, while the active volcanic bentonite component of the core absorbs up to fifteen times its volume—it expands to self-seam at overlaps and seal cracks and penetrations, using the very pressure of the water itself to fill and block any gap
  • Shear strength - for greater stability under cross-stresses
  • Slope stability - to maintain even distribution of active components on steeper inclines
  • Resistance to varying weather conditions - extends relatively short construction seasons at some sites by holding up to freeze-thaw cycles better than compacted clay

Easily configured for a wide range of applications, GCLs provide increased durability and consistent performance and are increasingly replacing compacted clay liners in applications including:

Landfill liners

GCLs can replace compacted clay in liner systems required in many regulations. They effectively minimize system leakage by providing "intimate contact" with the overlying geomembrane. This allows a GCL-based liner to outperform a compacted clay-based system. Another popular design option is to combine a geomembrane, a GCL and a partial thickness of a low permeability soil to maximize both hydraulic performance and puncture protection.



Landfill caps

GCLs are increasingly being used as the sole hydraulic barrier for landfill caps in preference to geomembrane and compacted clay. They have good slope stability characteristics and do not require geotextile protection. They can be installed in less than perfect ground and weather conditions and often do not require the preparation of special subgrade and cover soils. GCLs are resistant to freeze/thaw, desiccation/rewetting and differential settlement, all of which can damage traditional compacted clay liners. 



The insight and help you need

Our experience and application knowledge provide you insight into project design. In addition to offering high quality products, CETCO provides unparalleled technical support. Our multi-disciplinary technical staff are recognized subject matter experts, fluent in our products and technologies with application experience throughout the world. We are here to provide the solution for your project’s unique challenges. Contact your local CETCO technical sales manager about any of our environmental products for your next project.


CETCO - Pioneer and leader in environmental products

CETCO is the leader and pioneer in cutting-edge environmental solutions. Around the globe for the last half-century, our innovative teams of clay mineralogists, chemists, and polymer scientists transform ordinary minerals into extraordinary technology to solve day-to-day problems worldwide.





    Recommended Products
    Drop-In Spec

    We build all of our GCLs to be compliant with GRI-GCL3 and their guide specifications can be found for use on the Geosynthetic Institute website.


    In the News
    How CETCO Helped to Cap a Coal Ash Landfill in Mallorca, Spain - Waste Advantage Magazine, December 2019