KTW offers highly elastic waterproofing and coatings, concrete repairs and upgrades with long-term tested products for foundations and towers (also at great heights, e.g. on hybrid towers). Repair, sealing, coating and strengthening of wind turbine foundations Since 2005, KTW Umweltschutztechnik GmbH has been using long-term tested, highly elastic joint waterproofing between the foundation component and the foundation, as well as crack-bridging coatings for concrete surfaces, on the well over 2000 wind turbine foundations that have been processed. The highly elastic coatings have been successfully certified with 180 million load cycles (=approx. 20 years of operating time) from -0.2 mm to +0.7 mm. High-pressure injectors are also used to strengthen and improve the clamping of the foundation components, which are also long-term resistant with around 180 million load cycles. If foundations show cracks and spalling or leaks in the joint sealing, movement measurements are recommended to optimise the renovation concept before repair, depending on the degree of damage. The concrete repair is carried out with decoupling from the foundation component. Necessary substrate pre-treatments, such as sandblasting, are carried out from a single source on site with our own equipment and SCC*-certified personnel. The employees and fitters deployed are also in possession of the SIVV certificates. If there is partial corrosion damage to the towers, we offer professional repair at great heights (e.g. on hybrid towers) in addition to sealing the butt joints of the tower segments. Approved gripping hoist stage techniques are used here. We have also been able to gain experience OFFSHORE with trained personnel: with the production and installation of air-conditioned flange sleeves for the reliable corrosion protection of bolted joints on foundation structures. KTW Umweltschutztechnik GmbH, as a TÜV-approved company in the field of the Water Resources Act (WHG), also offers waterproofing and coatings inside the tower to prevent leaks from entering the ground, as well as the highly elastic sealing of transformer stations and their cable feeds.
