Effectiveness and Application
This drainage material consists of the drain base and nonwoven geotextile fabric attached to it from both sides. Geomat allows water filtration letting no soil particles block the drain base that guides and evacuates the water. A drainage geomat is a reliable solution to arrange drainage of foundations, motorways and railways, and landfills.
Geospan Drainage 3D use allows:
- thinner draining layers through higher water evacuation rate;
- stronger road structure due to reduced humidity of subgrade soils.
Geospan Drainage 3D applications:
- areas of high water flow into the draining layer;
- trafficway widening areas with the pavement bottom elevation over the groundwater level unsecured.
Performance
| Parameter | 3D 5 | 3D 7 |
| Base surface strength per GOST ISO 9862, g/m², % | 600±15 | 800±15 |
| Thickness at 2.0 kPa, mm | 5±15% | 7±15% |
| Strength at max load, lengthwise / widthwise, kN/m | ≥ 15 | ≥ 15 |
| Strain at max load per GOST R 55030, % | ≤ 120 | ≤ 120 |
| Permeability in geodrain plane under pressure of 2 kPa, m/day | ≥ 400 | ≥ 500 |
| Permeability through geodrain plane thickness under pressure of 2 kPa, m/day | ≥ 40 | ≥ 40 |
| Frost resistance (30 cycles) per GOST R 55032, % | ≥ 80 | ≥ 80 |
| Acid resistance per GOST R 55035, % | ≥ 80 | ≥ 80 |
| Resistance to UV per GOST R 55031, % | ≥ 80 | ≥ 80 |
| Standard size, m | 2-4 × 20-40 | 2-4 × 20-40 |
