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Acrylate Gels

Injection gel: low viscosity injection material for sealing structural elements with ground contact

WEBAC acrylic gel is an injection material characterized by its very low viscosity. This makes WEBAC injection gel the ideal solution for the sealing of structural elements with ground contact (gel injection). Low viscosity injection gel can also be used for sealing surfaces within overall open-pored structures against moisture penetration – including the installation of a post-construction damp proof course (dpc) against capillary rising moisture in masonry. WEBAC polymer gel is also suitable for gel injections into joints. 

Injection gel resistant to acids, salts and frost

Fully reacted WEBAC acrylate gel is insoluble in water and fuels. WEBAC injection gels are compatible not only with concrete and masonry mortar but also with foil and cable sheathing and are resistant to diluted acids and salts detrimental to the building structure. Our polymeric gel is also resistant to alternating frost and thaw. 

Preparatory work

Structural analysis before the injection:

  • Structural condition
  • Moisture condition
  • Salt contamination
  • Foundation soil examination 

 This provides information on: 

  • Feasibility of the planned injection
  • Choice of drill-hole packers
  • Positioning of drill holes 
  • Calculation of material consumption
     

Application of injection gel

Please note when applying polymer gel: The injection pressure depends on the nature and condition of the building structure. The acrylate gel is injected from bottom to top, beginning at the lowest drill-hole level. The injection process is continued until injection gel emerges from the adjacent packers. The reaction speed is influenced by the temperature of the material and the structural element: higher temperatures will accelerate and lower temperatures will slow down the reaction. Only inject pure WEBAC injection gel free of residues from cleaning agents or other foreign matter.

Application by 2C pump (stainless steel): 

  • Provide for a sufficient volume flow to ensure that components A and B of the polymeric gel are mixed until homogenous in the mixing device (static mixer)

Injection gel: final work 

  • Packers can be removed immediately after gel formation
  • All gel must be removed from the drill holes/drill hole walls down to approx. 10 cm deep and the drill holes be filled. Preferably use PCC mortar for concrete and general purpose mortar or quick-setting mortar for masonry