Common Application Techniques
Component filling from the surface
Cracks in components, whether dry or moderately damp, can be filled from the surface. To facilitate the injection process, proper preparation is required, and appropriate packers are used. These injection packers are bonded into place at intervals corresponding to the depth of the crack, up to a maximum of 60 cm. Additionally, the cracked surface must be sealed. If the crack is accessible from both sides, sealing is necessary on both faces. For cracks deeper than 60 cm, adhesion packers can be used to optimize the filling process. On horizontal or slightly inclined surfaces, gravity is sufficient to fill the cracks. To maintain a continuous flow of material, a cut is made along the crack’s line to introduce the injection compound. For specific instructions on each injection material, further information can be obtained.
Filling of components through drilled channels surface
To fill damp, moist, and water-bearing cracks and cavities in components, channels are drilled at a specific angle intersecting the crack or cavity. The spacing between these drilled channels should be half the depth of the crack, up to a maximum of 60 cm. More detailed instructions pertaining to the appropriate injection compound can be found for further guidance.
Joint injection
To fill water-bearing construction joints or expansion joints, there are two methods: using drilled channels or injection hoses. When injecting via drilled channels, holes are made at a specific inclined angle crossing the joint or at a 90° angle through the rear material. In the case of construction joints, the intervals between the holes should correspond to half the thickness of the component, up to a maximum of 60 cm. However, for expansion joint injection work, significantly larger packer intervals are possible, depending on the flow path configuration. For more detailed instructions and guidance, it is recommended to refer to the application instructions specific to the injection material being used.
Curtain Injections
To address dampness in components, two methods can be used for sealing: curtain injection from the outside or the provision of a barrier membrane (both horizontal and vertical). In the curtain injection approach, injection holes are drilled through the component (left illustration) to introduce the necessary materials for sealing. Alternatively, relevant joints can be crossed with injection holes to implement the barrier membrane (right illustration). Both methods aim to effectively seal and protect the components from dampness and water infiltration.
Injections Systems
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