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Bentomat SDN
Bentomat® SDN is a reinforced needlepunched GCL that encapsulates a layer of 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.
Propriétés
Material property
Test method
Test frequency (m²)
Required values
Bentonite Swell Index1
ASTM D 5890
1 per 50 tonnes
24 ml/2g min
Bentonite Fluid Loss1
ASTM D 5891
1 per 50 tonnes
18 ml max
Bentonite Mass/Area2
ASTM D 5993
4 000 m²
3,6 kg/m² min
GCL Peel Strength3
ASTM D 6768
20 000 m²
53 N/cm MARV
GCL Peel Strength3
ASTM D 6496
4 000 m²
4,4 N/cm min
GCL Index Flux4
ASTM D 5887
Weekly
1 x 10-8 m³/m²/sec max
GCL Hydraulic Conductivity4
ASTM D 5887
Weekly
5 x 10-9 cm/sec max
GCL Hydrated InternalShear Strength5
ASTM D 5321 ASTM D 6243
Periodic
24 kPa typ @ 200 psf
Panel specifications
Products
Dimensions width x length
Area
Effective area
Bentomat SDN
44,4 m x 45.7 m (14,5 ft x 150 ft)
202 m² (2 175 ft²)
193 m² (2 071 ft²)
Caractéristiques des rouleaux
Products
Dimensions length x dia.
Nominal weight
Rolls/Truckload
Bentomat SDN
4,9 m x 610 mm (16 ft x 24 in)
1 200 kg (2 650 lbs)
16 rolls per truckload
Notes
Bentonite property tests performed at a bentonite processing facility before shipment to CETCO's GCL production facilities.
Bentonite mass/area reported at 0 percent moisture content.
All tensile strength testing is performed in the machine direction using ASTM D 6768. All peel strength testing is performed using ASTM D 6496. Upon request, tensile and peel results can be reported per modified ASTM D 4632 using 4 inch grips.
Index flux and permeability testing with deaired distilled/deionized water at 80 psi (551kPa) cell pressure, 77 psi (531 kPa) headwater pressure and 75 psi (517 kPa) tailwater pressure. Reported value is equivalent to 925 gal/acre/day. This flux value is equivalent to a permeability of 5x10-9 cm/sec for typical GCL thickness. Actual flux values vary with field condition pressures. The last 20 weekly values prior the end of the production date of the supplied GCL may be provided.
Peak values measured at 200 psf (10 kPa) normal stress for a specimen hydrated for 48 hours. Site-specific materials, GCL products and test conditions must be used to verify internal and interface strength of the proposed design.
The information and date contained herein are believed to be accurate and reliable. SOLUTION OPTIMUM makes no warranty of any kind and accepts no responsibility for the results obtained through application of this information.