bi_BauMagazin - Economical sealing of expansion joints with compressed air

Economical sealing of expansion joints with compressed air

A new process seals expansion joints economically, quickly and permanently using compressed air-filled sealing elements. The patented technology has now been used in a project by Stadtwerke München GmbH.

By Dieter Gustedt and Roland Wolf, Stuttgart
Wolf Kabeltechnik GmbH from Stuttgart has developed a method for sealing expansion joints using sealing elements filled with compressed air. The process eliminates many of the disadvantages of conventional expansion joint sealing and is a convincing alternative, especially for subsequent sealing as part of renovation work. This technology was used in January 2011 as part of a pilot project to seal a structural joint in Stadtwerke München GmbH's Neuperlach Süd underground railway station. The special feature of this technology is that the air pressure filling allows the sealing cushion to adapt to the contour of the expansion joints and follow the joint movement without material fatigue. The particular advantages of this technology include quick and easy installation as well as simple, fast removal of the sealing element. The work area remains clean and the sealing element can be reused after removal. As there is no waste or residue and the sealing elements can be filled with normal air, this technology protects the environment. As an option, the movement of the expansion joint can be monitored cost-effectively via a pressure and temperature sensor using a wireless interface. This technology can be used both for refurbishments and for new buildings.

Link:
www.bi-baumagazin.de