Finnish-ed bridge repaint
Korkal Oy has repainted the Heureka light traffic bridge in Tikkurila, Finland with Nor-Maali’s SILKO paint system LIVI B.2+ Normastic 405 x2 – Normadur 65 HS.
The Heureka light traffic bridge located in Tikkurila runs from Tikkurilanti over the Keravanjoki to Heureka. Tikkurila is a district and major region of the municipality of Vantaa, Finland. Located in the eastern half of the Helsinki conurbation, some 16km (10m) north of the capital’s downtown district, it is the administrative and commercial hub of Vantaa.
The bridge is a cable-stayed bridge and was completed in 1989.
Korkal Oy repainted the Heureka bridge during the summer of 2023 as part of the bridge’s wider restoration work, with lighting and parts of the bridge’s structures also being renewed. Bridge vibration is being reduced by installing dampers, and the entire renovation should be completed in December 2023.
The bridge was partially painted during the renovation work, with the painting system used being Nor-Maali’s LIVI B2+ system Normastic 405 x2 – Normadur 65 HS, including 310 µm DFT.
Korroosiotyö Korkal (Corrosion work Korkal), founded in 1992, specialises in painting infrastructure, petrochemicals and maintenance painting. Typical work includes bridges, tanks and maintenance painting in factories.
The company may have been founded in 1992 but CEO Kalevi Kallionkieli has been working in the industry for much longer and has extensive experience of project painting in Finland.
SILKO painting systems
SILKO 3.351 painting systems for new and repainting are grouped according to the environmental stress classes (C3/C5/Im1-Im3) according to the standard SFS-EN ISO 12944-2. For new and repainting of bridges, the durability requirement (SFS-EN ISO 12944-1) is class VH (very high, over 25 years).
The Norwegian Railways Agency uses its own codes beginning with LIVI to mark the painting systems, and the systems are grouped into three different groups: LIVI A, LIVI B and LIVI C. Group LIVI A includes painting systems that use zinc-based primers. These painting systems are primarily used for painting new bridges. LIVI B includes non-zinc-based painting systems. These are primarily used in repair sites and other special sites. The LIVI C group includes painting systems for hot-dip and spray-galvanized surfaces.
The Finnish Railways Agency maintains a separate list, which contains paint manufacturers’ painting systems that the Agency has assessed as suitable for use. Only painting systems assessed by the Finnish Railways Agency as suitable for their use may be used at their sites in accordance with the SILKO 3.351 instruction.