Sika Waterbar Connection Joints are specialized internal profiles used to create a watertight seal between two concrete sections where the reinforcement is discontinuous. These are primarily utilized in heavy-duty structural engineering, such as connecting new building extensions to existing concrete or in the construction of diaphragm walls (D-Walls). Because they are cast internally, they are protected by the concrete cover and are capable of withstanding extreme hydrostatic pressure.
Internal (Type DWall): These feature a reinforced, thicker cross-section (up to 9.5mm) to withstand the rigorous process of lowering steel cages and the high-impact flow of concrete during tremie pipe pouring. They ensure a seamless, high-integrity connection in deep basement and underground infrastructure projects.
Material: Heavy-duty Flexible PVC-P.
Thickness: Approx. 9.5 mm .
Application Environment: Extension of existing basements, new additions to water tanks, and tunnel lining segments.
Compliance: Shore-A Hardness ≥70, Water absorption ≤1%.
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