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AkvaVIS

AkvaVIS P — two-component polyurethane foam for stopping leaks

Injection waterproofing

AkvaVIS P is a two-component hydroactive solvent-free polyurethane foam: it starts to react 15–45 s after meeting water and expands up to 30 times. It is pumped in through packers to stop active leaks in buried joints, cracks wider than 0.2 mm and at service penetrations, to fill voids or to stop pressurised seepage before injecting AkvaVIS S400 resin. The elastic foam remains leak-tight under hydrostatic pressure in moving cracks. Work is carried out at air and substrate temperatures not below +5 °C.

Specifications

ManufacturerAkvaVIS — OOO “GELIOS”
Typeinjection waterproofing
Usefoundations and basements, tunnels and metro, tanks and pools, leak repair, joints and junctions
Basetwo-component hydroactive elastic polyurethane injection foam, solvent-free
Packagingtin pails: component A — 20 kg, component B — 24 kg
Application methodmix A and B 100 : 120 by mass (1 : 1 by volume) with a low-speed drill (300 rpm) for 1 min; before work, caulk the crack/penetration showing water with a hydraulic plug; holes are drilled at an angle of 30–45° crossing the crack/joint, packer spacing 20–25 cm, often in a staggered pattern; clean the holes with compressed air or water; Ø10 mm packers; one-component piston pump; increase the injection pressure gradually, not above Pmax = 10 atm × concrete class / 3 (for B45 — not more than 150 atm); inject from bottom to top until completely filled (checked at the adjacent packer); after polymerisation remove the packers, plug the holes with a polymer-cement compound; flush tools with “AkvaVIS Cleaner”
Application temperaturenot below +5 °C (air and substrate)
Curingreaction start on contact with water 15–45 s; foaming time 60–125 s; tack-free in 3 min
Key propertiesmix viscosity 100 mPa·s (20 °C); mix density 1.12±0.03 g/cm³; foaming volume up to 1 : 30 (free expansion approx. 25–30 times); elastic foam, holds hydrostatic pressure in moving cracks; for cracks > 0.2 mm; resistant to most organic solvents, weak acids, alkalis, microorganisms
Shelf life12 months in a dry warm place in the original packaging at +10…+25 °C
StandardsSTO 69626291-001-2012; included in the Moscow Territorial Construction Catalogue (MTSK); in the List of Innovative Products of the Moscow Innovation Agency (letter No. AIM-01-07-295/21 of 12.05.2021); positive opinion of OAO “TsNIIS”, Research Centre “Tunnels and Metros”; TSN-2001.1 item 01.01.4094

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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