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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 |
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| 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 |
70 N/cm MARV |
| GCL Peel Strength3 |
ASTM D 6496 |
4 000 m² |
6,1 N/cm min |
| GCL Index Flux4 |
ASTM D 5887 |
Weekly |
1 x 10-9 m³/m²/sec max |
| GCL Hydraulic Conductivity4 |
ASTM D 5887 |
Weekly |
5 x 10-10 cm/sec max |
| GCL Hydrated InternalShear Strength5 |
ASTM D 5321
ASTM D 6243 |
Periodic |
24 kPa typique |
| Panel specifications |
| Products |
Dimensions width x length |
Area |
Effective area |
| Bentomat CLT |
4,6 m x 45,7 m
(15 ft x 150 ft) |
209 m²
(2 250 ft²) |
200 m²
(2 145 ft²) |
| Caractéristiques des rouleaux |
| Products |
Dimensions length x dia. |
Nominal weight |
Rolls/Truckload |
| Bentomat CLT |
4,9 m x 660 mm
(16 ft x 26 in) |
1 340 kg
(2 950 lbs) |
15 rolls
per truckload |
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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.
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| 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. |
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Copyright © 2008 Solution Optimum Inc. — All rights reserved
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