U12-1 Heilbronner Straße

The project is a follow up to the project Stuttgart 21. The construction project include 2 underground tunnel with a length of 600m and 2 underground tunnel with a length of 250m
The tunnels was excavated by traditional drill and blast method with shotcrete application: MAPEQUICK 043 FFG (SBE) was the shotcrete accelerator used for the project.