SOLONAX GCL
Natural sodium bentonite encapsulated between a woven carrier and a nonwoven cover, needle-punched through the full section and thermally locked. A 10 mm hydrated bentonite layer is hydraulically equivalent to roughly a metre of compacted clay, and it self-seals around penetrations.
Why it is specified
- Swell index ≥ 24 mL/2 g — natural sodium bentonite, not activated calcium
- Index flux ≤ 1 × 10⁻⁸ m³/m²/s to ASTM D5887
- Peel strength ≥ 360 N/m — internal shear resistance for slope installations
- Overlap sealing with supplementary bentonite; no welding equipment on site
- Declared to EN 13361, EN 13491, EN 13492 and EN 13493
Range
Variants
| Code | Description |
|---|---|
| GCL-S | Standard — woven carrier, nonwoven cover |
| GCL-X | Reinforced — higher peel strength for slopes steeper than 1V:3H |
| GCL-L | Laminated — bonded LLDPE film for very low flux and gas tightness |
| GCL-P | Polymer-enhanced bentonite — leachate and brine resistant |
Data
Technical specification
| Property | Test method | MQC frequency | Unit | GCL-S | GCL-X |
|---|---|---|---|---|---|
| Bentonite mass at 0 % moisture, min. | ASTM D5993 | 4 000 m² | g/m² | 4 000 | 4 000 |
| Total mass per unit area, min. | ASTM D5993 | 4 000 m² | g/m² | 4 350 | 4 550 |
| Swell index, min. | ASTM D5890 | 50 t bentonite | mL/2 g | 24 | 24 |
| Fluid loss, max. | ASTM D5891 | 50 t bentonite | mL | 18 | 18 |
| Hydraulic conductivity, max. | ASTM D5887 | weekly | m/s | 5 × 10⁻¹¹ | 5 × 10⁻¹¹ |
| Index flux, max. | ASTM D5887 | weekly | m³/m²/s | 1 × 10⁻⁸ | 1 × 10⁻⁸ |
| Peel strength, min. | ASTM D6496 | 4 000 m² | N/m | 360 | 600 |
| Tensile strength (MD), min. | ASTM D6768 | 20 000 m² | kN/m | 8 | 12 |
| Roll dimensions | — | per roll | m | 4.70 × 40 | 4.70 × 40 |
Indicative nominal / minimum average roll values. A project-specific technical data sheet, certificate of analysis and drop-in specification are issued with every order.
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