Very fast reacting two-component injection resin

Product description

WILLPUR® WS- FA is a very fast-setting 2-component injection resin based on polyurethane, free of CFCs and halogens. It is used for sealing and consolidating in dry and wet areas up to highly pressurized water-bearing areas with high water flows. Without contact with water, the product hardens very quickly to form a high-strength, non-foamed polyurethane resin; on contact with water, a rapid reaction takes place and the product hardens to form a compact, solid foam.

Product details

  • is used for the permanent consolidation and sealing of wet and water-bearing rock in mining and tunnel construction
  • reliably seals pressurized water inflows with high volume flows from rock, soil or structures
  • closes cracks in the rock during tunnel driving and prevents water flow along the tunnel axis
  • permanently seals pressurized water-bearing cracks in concrete and masonry such as in tunnels, canals, shafts, locks, underwater concrete floors and excavation pit enclosures

Technical specifications

  • reaction time (end of foam) at 15°C approx. 1 min. 15 s
  • foam factor ~ 1 (without contact with water)
  • foam factor ~ 5 - 8 (at 1% water)
  • can be used in combination with WILLPUR® WS-X or WILLPUR® WS-F
  • by adding WILLADD® FAST (accelerator) or WILLADD® THIX (thixotropic agent), the system can be adapted to the on-site requirements
  • tested with regard to effects on soil and groundwater

Packaging units

Item nameSizePackaging
WILLPUR® WS FA - A/B400 mlDouble Chamber Cartridge 400 ml
WILLPUR® WS FA - A/B1500 mlDouble Chamber Cartridge 1500 ml
WILLPUR® WS FA - A21 kgMetal can 20 Liters
WILLPUR® WS FA - B25 kgMetal can 20 Liters