Masonry injection
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Masonry injection
With the masonry injection leaking structural elements covered with earth can subsequently be sealed from the inside. Depending on the building material composition and pore structure, a continuous sealing layer in the structural element (masonry) is created. By injecting suitable materials such as low-viscosity gels or resins, the water transporting capillaries are sealed.
Application aim
- Sealing of structures in contact with the ground or inundated with the ground from the inside out
- Subsequent sealing of element walls
- Filling of cavities and cracks (special proof of suitability required)
- Subsequent sealing of leaking expansion joints
- Subsequent injection of expansion joints between joint tape and water-resistant component surface
Filling material
- Acrylate gel
Demands on the injection packers
- Safe retention in the structural element during the injection at pressures depending on the injection method
- Corrosion resistance of elements remaining in the structural element
- Absperrmöglichkeit
- Shut off option
- Cross section adjusted to the required delivery and flow properties of the injection material
- Check valves for low opening pressure
Demands on injection devices
- Forced delivery of the components at reliably adjustable mixing ratios
- Powerful mixing head with check valves and cut off cocks
- Mixing line suitable for the injection material
- Separate high-pressure rinsing pump
- Measurement technology for monitoring and documentation of injection and dosing processes - DESOI Flow Control II, (please request consultation and brochure!)
Masonry injection in the building component
- The sealing layer is created in structural parts which initially have not been planned to be sealed
- The water transporting capillaries are sealed
Masonry injection in cavities
- The sealing layer is created in technologically conditioned parting planes, e. g. in cavities between double walls
Crack injection and injection of hollows
- Very often partial crack injections and injections of limited hollows have to be carried out, e. g. raster injection
Procedure
- Boreholes are drilled into the leaking structural element from the inside to the outside, up to approx. of the thickness of the structural element, at a slight angle of inclination
- The borehole pattern depends on the geometry of the structure
- The packers through which the injection material is injected are placed in the boreholes