Post-tensioning system,
Special construction
Zuckersilo Uelzen
a scaffold had been erected, the prestressing steel strands were installed from the ground up to 55 m high and 76 m around half the silo circumference with a hydraulically driven automatic feeder in the ducts laid while sliding. A total of approx. 390 t of prestressing steel was installed with up to 10 [...] order to avoid ovalization of the concrete container, it was necessary to work in sections and with two presses at the same time. Parallel to the prestressing work, the already stressed tendons could be injected with grout. A special high-pressure injection pump was used for pressing.[...]