As part of the renovation of the Wilhelm Kaisen Bridge in Bremen, we are contributing to a clearly defined goal: after renovation, the bridge should have a remaining service life of around 40 years. A key component in this is 16 anchor blocks that integrate the anchor construction in a force-fit manner. It is precisely at this interface that it is decided whether loads are permanently and safely transferred into the construction.
We used V1/160 PAGEL-VERGUSS for the grouting work. A total of approx. 65 tonnes of material was processed in a continuous operation. This placed high demands on logistics, time slots and process stability: conveyor distances of up to 40 metres, very confined spaces and a high degree of reinforcement left little room for improvisation. In addition, grouting heights of up to 1.15 metres had to be achieved – a dimension at which flowability, deaeration and controlled processing must work together consistently.
In order to ensure successful execution from the outset, we produced and evaluated a large-format test specimen in advance under real construction site conditions. This enabled us to test the material behaviour, installation and compaction strategy, and handling on the planned conveyor routes in a practical manner. The findings from this test were directly incorporated into the work preparation and process planning on site.