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contaminated soil cover

GEOSYNTHETIC CLAY LINERS TECHNICAL SPECIFICATIONS

GCL Technical Specifications 

Geosynthetic Clay Liners (GCL) are prefabricated with a layer of processed bentonite clay encapsulated by geotextile panels. A GCL Is used primarily as a substitute for compacted clay liners in areas such as landfills, secondary containments, and surface impoundments. The GCLs provide advantages in cost and ease of installation.


Installation of Geo Clay Liner, also known as GCL.

GEOSYNTHETIC CLAY LINERS
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Product Name

Bonding

Method

GCL Dimensional Properties

 

Panel Size    Average      Bentonite 

         Roll            Roll       Mass/Unit Area Width/Length  Weight      ASTM D 5993

m/m                   kg                  gm/m2

(ft/ft)                 (lb)                (lb/ft2)

GCL Hydraulic Properties

 

 

Flux [1]

ASTM D 5887 [2]

 

m3/m2-s

Base Bentonite

Properties

Swell 

        Index               Fluid 

ASTM D 5890         loss 

                         ASTM D 5891 

(min) 

        ml/2g              (ml)

GCL Structural Components

Upper Geosynthetic               Lower Geosynthetic

 

                                                                       Weight

                                                                         ASTM D 3776 or

                              Weight                            Thickness

                            ASTM D 3776                    ASTM D 5199

                                     g/m2             Type or      g/m2 or mm

Type/Structure         (oz/yd2)          Structure    (oz/yd2 or mil)
Claymax 
200 R
Adhesive        4.2/45.7             1180            3670 g/m2 
    (13.83/150)         (2600)             (0.75)

1 x 104
           24                    18          woven                     90                non-woven          50 
                                         (2.8)                                          (1.5)
Claymax 
600 CL
Adhesive, 
Lamination
       4.2/45.7             1180            3670 g/m2 
    (13.83/150)         (2600)             (0.75)

1 x 104
           24                    18  FML/non-woven          200               non-woven          50 
      composite                (6.0)                                          (1.5)
Bentomat 
ST
Needlepunch        4.6/45.7             1160            3670 g/m2 
      (15/150)            (2350)             (0.75)

1 x 104
           24                    18          woven                    105               non-woven          200 
                                        (3.2)                                           (6.0)
Bentomat 
DN
Needlepunch        4.6/45.7             1180            3670 g/m2 
      (15/150)            (2600)             (0.75)

1 x 104
           24                    18        geotextile                  200               non-woven          200 
                                        (6.0)                                            (6.0)
Bentomat 
CL
Needlepunch, 
Lamination
      4.6/45.7              1200            3670 g/m2 
      (15/150)            (2650)             (0.75)

1 x 104
           24                    18 FML/non-woven           270                non-woven          105 
      composite                (8.0)                                            (3.2)

Source: Geotechnical Fabrics Report * December 1997


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Lacey's Spring, AL 35754

 nonwoven geotextile

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