Claymax®200R is a non-reinforced GCL with two lightweight nonwoven geotextiles encapsulating a layer of Volclay® sodium bentonite. Ideally suited for mild slopes, Claymax 200R maximizes both performance and value in one ingeniously straightforward product. A completely self-seaming GCL, there's simply no better GCL than Claymax 200R for lining the flat areas of a landfill.

Claymax® 600CL is a non-reinforced GCL consisting of two lightweight geotextiles encapsulating a layer of Volclay sodium bentonite with a composite laminate applied to one of the geotextiles. CLAYMAX 600CL is the ideal solution for flat areas of landfill caps and high hydraulic head conditions in bottom liner applications.

Bentomat® ST is a reinforced GCL consisting of a layer of Volclay® sodium bentonite encapsulated between two geotextiles, needlepunched together for maximum performance under a wide variety of field conditions. This integrated matrix of bentonite and needlepunced fibers provides high shear strength and allows Bentomat to maintain low permeability. Bentomat ST has a woven, slit-film upper geotextile for maximizing intimate contact in composite liner systems.

Bentomat® DN is a reinforced needlepunched GCL that not only has high internal shear strength, but also provides excellent interface friction on both sides of the GCL. Bentomat DN is ideally suited for steep-slope liner/cover systems where intimate geomembrane contact is less critical than overall liner system stability.

Bentomat® SDN is a reinforced needlepunched GCL that encapsulates a layer of Volclay sodium bentonite between two nonwoven geotextiles needlepunched together for high internal shear strength and good interface friction performances. Bentomat SDN may be a cost effective alternative for steep slope liner/cover systems where overall liner system stability is important.

Bentomat® CL is a reinforced GCL composed of two carrier geotextiles needlepunched together to encapsulate a layer of Volclay sodium bentonite. A composite lamination gives the GCL excellent hydraulic performance and provides puncture and tensile strengths beyond conventional plastic membranes. Bentomat CL is ideal for landfills, ponds, surface impoundments and other containment projects.

Bentomat® CLT is a reinforced GCL consisting of a layer of Volclay® sodium bentonite between two geotextiles, which are needlepunched together and laminated with a flexible textured HDPE sheet. The addition of the HDPE sheet to the GCL increases the hydraulic resistance by an order of magnitude over that of standard GCLs. The textured surface of the HDPE sheet also increases the interface friction between the GCL and adjacent substrate when a greater interface friction is required on certain projects. This product is mainly used in liquid containment and landfill cap applications, but the versatility of the product allows it to be considered in many other applications.

Akwaseal® Pond Liners provide superior water containment with unmatched longevity. Akwaseal® is made with two water barriers: Bentonite Clay and a Flexible Plastic Membrane The bentonite clay is sandwiched between two textiles which are needle punched together. The membrane is permanently laminated to the outer textile surface. The result is an easy-to-install, self-healing, self-seaming liner requiring little maintenance. The swelling properties of the bentonite clay and cushioning of the textiles eliminate the need for seam welding and underlayments.

Akwaguard® liners are prefabricated PVC panels for engineered liner systems for waste and liquid containment applications. These geomembranes provide performance, installation, and price benefits over other alternative geomembranes in applications such as landfill caps, animal waste lagoons, and wastewater treatment facilities.

Volclay® CG-50 is a high-swelling, low dust, granular sodium bentonite used for soil-bentonite liner applications where it is necessary to minimize dust generation. CG-50 is designed for general sealing applications that do not require contamination resistance. Applications include ponds, lagoons, and tank farms.

Volclay® CP-200 is a high-swelling powder grade sodium bentonite used for soil-bentonite liners where dust generation is not a problem. CP-200 is designed for general sealing applications that require limited contamination resistance. Applications include landfill liners, landfill caps, ponds, lagoons, and tank farms. Volclay CP-200 meets API Specification 13A, making it useful for slurry trenching.

Volclay® TG-50 is a chemically treated, high-swelling, granular sodium bentonite used for soil-bentonite liners where high-contamination exists that can subject untreated clays to degradation. Applications include landfill liners, landfill caps, wastewater lagoons and industrial waste lagoons.

Volclay® SG-40 is a polymer treated, high-swelling granular sodium bentonite for improved efficiency in soil-bentonite liners for water containment applications. Because SG-40 application rates are lower than untreated bentonite, it provides greater economy than untreated bentonite.

Volclay® CC-8 "Crumbles" is a high-swelling, large coarse-granular sodium bentonite used to help seal leaks in existing ponds, lagoons, tank farms and reservoirs. It is sprinkled over existing water, where it sinks to the bottom and decreases the water leakage.

TexDrain is used as a cost effective replacement for granular drainage and gas venting systems. In cover systems, TexDrain will inhibit the accumulation of pore-water pressure above the barrier layer by providing a high capacity flow path for the drainage of excess liquids. Additionally, TexDrain may be used as a component of a gas venting system below the barrier layer, to prevent gas build up - whether generated from contained waste or from underlying soils. In bottom liner systems, TexDrain may be used as a replacement for a granular leachate collection system, or underneath the primary liner as the leak detection layer.

CETCO's Lining Technologies Group is a leader in the field of geosynthetic clay liners and soil sealants. Our Bentomat® and Claymax® lines of geosynthetic clay liners (GCLs) are bentonite and geotextile composites engineered for use in a variety of lining applications.

CETCO's GCLs offer several advantages over traditional compacted clay liners - improved hydraulic performance, easier installation and use of less air space within a landfill. Because of their unique self-healing sodium bentonite base, our liners resist cracking that typically occurs in compacted clay liners subjected to repeated freeze/thaw conditions. CETCO's patented manufacturing process utilizes a needle punched technique which encapsulates sodium bentonite between two layers of geotextile, inhibiting migration of the clay in its dry or hydrated state. CETCO's sodium bentonite is used in slurry wall applications. We also offer chemically treated soil sealants that can withstand contact with both contaminated and uncontaminated water.

Through testing conducted at our on-site laboratory, we will determine the correct technology and application rate to meet your project's special needs.

For a useful resourse for engineers, please access CETCO's Lining Technologies Group Engineering Site.

CETCO Announces Important Changes To GCL Certified Properties
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CETCO Lining Technologies Group announces the addition of prefabricated PVC panels to its portfolio of products for engineered liner systems for waste and liquid containment applications.