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BentIzol® bentonite cord — swelling waterstop for construction joints
BentIzol

BentIzol® bentonite cord — swelling waterstop for construction joints

Bentonite waterproofing

BentIzol® cord is a profiled strip of bentonite with butyl rubber that is placed on the water-pressure side immediately before concreting. In contact with water it swells by at least 100 % in 5 h and by 200 % in 24 h, withstands pressure up to 7.0 bar and retains its properties over an unlimited number of wetting and drying cycles. Rectangular sections 25×20, 25×15 and 15×10 mm and a round Ø20 mm section are produced; the cord seals cold joints, precast reinforced concrete joints and utility penetrations, but is not used as the sole seal of thermal expansion joints.

Specifications

ManufacturerBentIzol — OOO “BentIzol”, Vvedenskoye
Typebentonite waterproofing
Usejoints and junctions, foundations and basements, tunnels and metro, bridge structures, hydraulic structures and dams, tanks and pools
Baseprofiled cord of round or rectangular cross-section based on bentonite with butyl rubber
Packagingin boxes: BR 25×20 — 6 pcs of 5.0 m; BR 25×15 — 6 pcs of 6.5 m; BR 15×10 — 8 pcs of 8.0 m; BC 20 — 6 pcs of 5.0 m; gross box weight 15.8–24.2 kg
Application methodinstall on the water-pressure side immediately before concreting onto a cleaned surface, tightly, without gaps, joints butted; remove the release paper (if present); not closer than 75 mm to the edge of the structure on the moisture-ingress side; fasten with nail dowels at 30–50 cm spacing, with polymer-based adhesive or with steel mesh and dowels; protect from premature hydration, replace any section swollen by more than 30 %; do not use as the sole seal of thermal expansion joints
Application temperaturefrom −15 to +50 °C
Key propertiescross-sections: rectangular BR 25×20, BR 25×15, BR 15×10 mm, round BC Ø20 mm; maximum pressure 7.0 bar; swelling in water at least 100 % after 5 h and 200 % after 24 h; service temperature from −40 to +100 °C; adhesion to concrete, metal, plastic; unlimited number of hydration–dehydration cycles
StandardsTU 20.30.22-002-87299967-2021 “BentIzol® sealing material. Specifications”; GOST R certificate of conformity

Data from the manufacturer’s technical data sheet. The coating system, number of coats and quantity are selected for your project on request.

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