BentIzol® SB 4 bentonite mat — lightweight liner on natural bentonite
Lightweight mat on natural sodium bentonite for liners of ponds, canals and landfills; a 5 × 40 m roll weighing 880 kg.

BentIzol granules and powder are an auxiliary material for bentonite mats: they are sprinkled into overlaps, technological openings and horizontal–vertical transitions, and mixed with water in a 1 : 3.5 ratio they make a paste for vertical overlaps, cracks and utility penetrations. BentoStandard is made from soda-activated clay of the Zyryanskoye deposit, BentoPremium from alkaline clay, and BentoProfis with special additives is chosen for aggressive media. Supplied in 50 kg bags or 900 kg MKR soft containers.
| Manufacturer | BentIzol — OOO “BentIzol”, Vvedenskoye |
|---|---|
| Type | bentonite waterproofing |
| Use | foundations and basements, joints and junctions |
| Base | granulated bentonite and bentonite powder; BentoStandard — alkaline-earth clay from the Zyryanskoye deposit activated with soda ash; BentoProfis — with special additives for aggressive media |
| Packaging | bags of 50 kg or MKR soft containers of 900 kg |
| Application method | sprinkling of bentonite mat overlaps, technological openings and horizontal–vertical transitions; paste for vertical overlaps, cracks and utility penetrations — granules with water 1 : 3.5 |
| Key properties | free swell index at least 24 / 30 / 30 ml/2 g (Standard / Profis / Premium); fluid loss no more than 18 / 14 / 16 ml; cation exchange capacity at least 70 / — / 80 meq/100 g; moisture content no more than 12 %; granules 0.5–2.0 mm, powder 0–0.4 mm; bulk density no more than 1.2 g/cm³ |
| Consumption | about 0.5 kg per linear m of bentonite mat overlap |
Data from the manufacturer’s technical data sheet. The coating system, number of coats and quantity are selected for your project on request.
Lightweight mat on natural sodium bentonite for liners of ponds, canals and landfills; a 5 × 40 m roll weighing 880 kg.
Bentonite mix for injecting the space behind foundations, basements and tunnels; thickens to a dense gel within 24 h.
Bentonite mat for waterproofing foundations, basements, car parks, tunnels and trafficable roofs; compact 1.15 × 5 m rolls of 31 kg.
Laminated mat on activated bentonite for liners in chemically aggressive media; a 5 × 40 m roll weighs 916 kg.
Laminated mat on natural sodium bentonite for anti-seepage liners in media with pH 1–13; water pressure up to 7 atm.
Drainage geocomposite with geotextile on both sides of the geonet for draining water from underground parts of buildings, tunnels and roads.