The 3-DM mat is supplemented with a laminated geomembrane layer: the virgin polyethylene geonet with geotextile on both sides drains water, while the membrane serves as an additional anti-seepage layer. Longitudinal tensile strength is at least 55–57 kN/m, permeability coefficient normal to the plane at 2 kPa at least 100 m/day, geotextile-to-core bond at least 500 N/m. The mat is used for drainage of underground parts of buildings, tunnels and roads and at landfills, while remaining a protective drainage layer that does not replace the main waterproofing.
| Manufacturer | BentIzol — OOO “BentIzol”, Vvedenskoye |
|---|---|
| Type | waterproofing material |
| Use | foundations and basements, tunnels and metro |
| Base | composite drainage mat: polyethylene geonet with nonwoven geotextile of 250–500 g/m² on both sides and a laminated geomembrane layer of 1–1.5 mm |
| Packaging | rolls 4.0–4.3 m wide, 20.0–40.0 m long |
| Key properties | geotextile 250 / 500 g/m²: thickness at 2 kPa 9.5 / 11.0 mm, at 200 kPa 8.4 / 9.8 mm; tensile strength at least 55 / 57 (longitudinal) and 35 / 38 kN/m (transverse); permeability coefficient normal to the plane at least 100 / 80 / 50 / 20 m/day at 2 / 20 / 40 / 200 kPa; core — three-dimensional geonet of virgin polyethylene (ribs in three directions); CBR static puncture strength at least 1.0 kN; dynamic perforation no more than Ø20 mm; core tensile strength at least 7.0 / 1.5 kN/m; geotextile-to-core bond at least 500 N/m; elongation at maximum load no more than 120 %; from −60 to +60 °C; service life more than 50 years |
| Layer thickness | 9.5–11.0 mm at 2 kPa |
| Standards | STO 87299967.006-2024; GOST R certificate of conformity; “Made in Russia” certificate |
Data from the manufacturer’s technical data sheet. The coating system, number of coats and quantity are selected for your project on request.
Smooth HDPE or LLDPE geomembrane for landfills, tailings storage facilities, canals and water bodies; chemical resistance pH 0.5–14, service life from 50 years.
Laminated bentonite mat for foundations, tunnels and trafficable roofs; chemical resistance in the pH 1–13 range.
Laminated mat on natural sodium bentonite for liners of chemically aggressive facilities; a 5 × 40 m roll weighs 916 kg.
Bentonite mix for injecting the space behind foundations, basements and tunnels; thickens to a dense gel within 24 h.
Polyethylene geomembrane textured on one or both sides for anti-seepage liners of landfills, tailings storage facilities and dams.
Bentonite mat with a polymer additive to the bentonite for foundations, basements and tunnels; permeability coefficient no more than 0.7×10⁻¹¹ m/s.
