FIELD: construction.
SUBSTANCE: invention relates to waterproofing dowels, more specifically to formwork dowels used in construction of foundations, walls, floor slabs, buried objects, etc. The waterproofing key is made in form of ribbon profile and is characterized by presence of sealing zones with fixing anchors and working area with deformation joint having side walls. The side walls of deformation joint have protruding elements directed towards the formed deformation seam of the structure being erected. The height of side walls protruding elements of deformation joint is greater than the distance from the side wall of deformation joint to the axis of the nearest fixing anchor.
EFFECT: exclusion of cement slurry flow and displacement of waterproofing dowel from its design position during concreting is achieved.
4 cl, 9 dwg
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