Effectiveness and Application
Geospan 3DM (hydromat) is a drainage material with a geomembrane layer. It consists of a volumetric diamond-shaped polymer grid, as the drain base, with nonwoven geotextile fabric attached from both sides, and a LDPE geomembrane layer.
Geospn 3DM use allows:
- waterproofing and water filtration, letting no soil particles block the drain base that guides and evacuates the water.
Geospan 3DM application:
- installation of anti-filtering screens and drainage for construction of airports, motor ways and railways, waste disposal points and landfills.
Performance
| Parameter | Value |
| Filtering geotextile surface weight, g/m², % | 200±15 |
| Thickness at 2 kPa to 20 kPa, % | 10 мм ±10 |
| Cell size, mm | 14×14 |
| Hydromat tensile strength, lengthwise per GOST R, kN/m | ≥ 27 |
| Hydromat tensile strength, widthwise per GOST R 55030, kN/m | ≥ 27 |
| Geodrain tensile strength, lengthwise, per GOST R 55030, kN/m | ≥ 10 |
| Geodrain tensile strength, widthwise per GOST R 55030, kN/m | ≥ 10 |
| Tensile strain at max load per GOST R 55030, % | ≤ 100 |
| Permeability in geomat plane at pressure of 2 kPa to 20 kPa, m/day | ≥ 300 |
| Water impermeability at 0.01 MPa per GOST ГОСТ 2678 | Отсутствие воды |
| Frost resistance (30 cycles) per GOST R, % | ≥ 80 |
| Acid and alkali resistance per GOST R 55035, % | ≥ 90 |
| Resistance to UV per GOST R 55031, % | ≥ 80 |
| Standard size, m | 4,2-4,3 × 30 |
