Sika Technology Ag

Martin Eckl

Herbert Ackermann

Roy Z'Rotz

Wolf-Rüdiger Huck

Simon Schoenbrodt

Robert Roskamp

Matia Bulloni

Simon Schönbrodt

Christoph Fäh

Roman Da Rin

Gustl Knebel

Johannes Pecher

Patrick Bräker

Marcel Langenegger

A sealing element for sealing joints in concrete structures including a profile having a center portion and first and second side portions on opposite sides of, the center portion. The side portions of the profile are at least partially covered with a functional coating which is operative to bond with a fresh cementitious composition casted against it and allowed to harden. A method produces a sealing element, a method seals a joint between two sections of concrete, a sealed construction, and a use of a sealing element for sealing of a joint in a concrete construction.

Fully bonded waterbar

A waterproof membrane is described that includes a barrier layer and a functional layer. The functional layer can include a thermoplastic polymer that changes consistency under the influence of highly alkaline media, and an adhesive. The production and use of the membrane are also described. The functional layer of the membrane can be designed in the form of a film, a coating, or a nonwoven fabric. The fibers in the fabric can include a hard core that is surrounded by a polymer layer, is inert prior to coming into contact with liquid concrete and acts as a protective layer. Thus, the membrane is protected from premature aging and allows work to be performed with the seal in place. During the concreting process, i.e. when the functional layer comes into contact with liquid concrete, the polymer dissolves and thus allows the adhesive to bond to the concrete. The functional layer thus acts as an adhesive sealing compound and the seal is leakproof.

Waterproof membrane with good adhesion to concrete

Growing community of inventors

Pfäffikon, Switzerland

Martin Eckl