Concrete Top References

Since mining began at the site over 100 years ago, LKAB has produced over 950 Mt of ore, yet only one third of the original ore body has been extracted.
The extraction-process requires large amounts of sprayed concrete to secure the excavation. Since 2008 Sika is the main supplier for admixtures and technologies at Kiruna.

The only way to cross both the flatlands and the Alps with a high-speed line is to use a base tunnel between Innsbruck, Austria and Franzensfeste, Italy. At 64 km, the Brenner Base Tunnel will be the longest underground railway connection in the world, a pioneering work of engineering and it will markedly improve passenger travel and freight transport through the heart of Europe.

The Design-Build Contract includes planning and construction of this bridge. With 2,213 m length it is the longest bridge construction in all of Serbia and the largest bridge in Europe currently being built. Three bridge piers are constructed in the river. The bridge has a height above ground of up to 40 m. The ‘cantilever method of construction’ was used to build the wide spans of the bridge crossing the river. This girders were concreted and pre-stressed in short, balanced 5-m-sections on both sides of the piers at the same time (balance beams).

Once the centre of the span was reached, the framework carriage is moved to the next pier and the procedure was repeated until the overhanging girders joined in the middle of a span.