Trisoplast
Technical dataTechnical data
| Composition (based on dry weight) | to | 1.000,0 kg | sand |
| add | 130,0 kg | bentonite | |
| add | 2,6 kg | polymer | |
| equals | 1.132,6 kg | Trisoplast | |
| Approved equivalent thickness | 7 cm for capping applications* and | ||
| 9 cm for bottom liners* | |||
| Proctor density | 1,6 - 1,8 g/cm² | ||
| Optimum moisture content | 7 - 12% | ||
| Permeability with water, typically | K from < 1 * 10-12 m/s to < 5 * 10-11 m/s | ||
| Permeability with air | K < 6 * 10-10 m/s | ||
| Permeability after freeze/thaw cycles | K ~ 1,8 * 10-11 m/s | ||
| Permeability at 10% deformation | K < 6 * 10-11 m/s | ||
| Acceptable damage-free bending radius | r  6,0 m (at 6% moisture content) | ||
| r 2,5 m (at 20% moisture content) | |||
| Shear strength (unconsolidated and drained) | |||
| Internal shear parameters | shear angle | min φ’ > 30° | |
| average cohesion | c’ > 17 kN/m² | ||
| External friction angle with rough geomembrane | shear angle | φ  min φ’ = 28° | |
| adhesion | a = 3 to 4,5 kN/m² | ||
| Deformation caused by swelling | max ε 8% (at σ 10 kN/m²) | ||
| min ε 0% (at σ 130 kN/m²) | |||
(*) This thickness refers to a hydraulic conductivity of a Trisoplast layer with a maximum permeability of 5 * 10-11 m/s, which has been demonstrated by laboratory and field tests to give a level of protection at least equal to the reference construction as described in the Dutch regulations of clay or sand/bentonite with a maximum permeability of 2,3*10-10 m/s and a thickness of 25 cm and 50 cm for capping applications and bottom liners respectively. The thickness already includes 2 additional centimetres for compensating installation inaccuracies.
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