At the beginning of February, IPA Bauchemischen Produkte GmbH carried out a technical training course as part of the renovation of a steel dome shaft at a petrol station in Leopoldshöhe. Gollub Anlagentechnik GmbH & Co KG was responsible for the practical implementation. The aim of the measure was the professional repair and long-term protection of the plant structure under real construction site conditions.
The work began with careful substrate preparation in accordance with the technical specifications of the IPA Polyschicht® DOM system. The steel substrate was blasted to a cleanliness level of Sa 2½ to ensure optimum mechanical and chemical adhesion of the coating. A dry ice blasting machine with abrasive garnet sand (0.2-0.5 mm, 30/60 mesh) was used. The ice blasting process prevents sparking and increases safety, as explosive gases can form in manhole shafts.
The first layer of IPA Polyschicht® (DOM-L) was then applied to the wall area by brushing. The system consisting of IPA Polyschicht® K2 (binder), K1 (hardener) and setting agent forms a highly resistant protective layer with lasting corrosion protection for steel surfaces. To reinforce sensitive areas, an E-glass mat (580 g/m²) was embedded in transition areas and pipe penetrations, significantly improving sealing and crack bridging.
The “IPA conductive tape” copper tape was integrated to dissipate electrostatic charges and prepared for subsequent connection to the equipotential bonding system. After a further coating in the wall area, the floor was built up with IPA Polyschicht DOM-Guss in two layers, applied evenly by pouring and spreading.
The IPA Polyschicht® DOM system impresses with its sustainable corrosion protection and DIBt approval for steel, concrete and masonry substrates. The training course demonstrated a safe, standard-compliant and durable solution for the refurbishment of manhole shafts in filling station and plant construction.
