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PU combi injection resin is a PU hybrid product consisting of polyurethane foam resins (PU foam) and polyurethane resins (PU). This injection material stands out due to its fast foam formation upon contact with water and its permanent sealing effect. But it also reacts without water contact forming a compound of constant volume. PU combi injection resin combines the positive properties of PU foam resins and PU resins. It is suitable for specific application ranges such as crack injections and damp proof courses in case of large cavities and in-situ water (short working time). PU hybrid resin from WEBAC is compatible with concrete, steel, masonry mortar, foil and cable sheathing.
Structural analysis before using PU combi injection resin:
This provides information on:
Loose plaster layers in the area of the injection level must be removed. Porous joints and defective masonry areas must be patched with quick-setting cement. Gravel nests and cavities to be filled must be free of dirt, oils, grease and other separative components.
The material is injected at an injection pressure adapted to the nature and condition of the building structure. The injection process must be continued until resin starts to emerge from the masonry into the area of the adjacent packers. An even material distribution has then been obtained. The material temperature and that of the structural element influence the reaction speed of PU combi injection resin. Higher temperatures accelerate the reaction, lower temperatures have the opposite effect. Only inject pure WEBAC PU combi injection resin – without residues from cleaning agents or other foreign substances.
Application by 1C pump: