Putzmeister solution at MalmoThe concrete trackbed in the twin-tube, 6 km-long Malmo city tunnel has to be installed without major vibration at a rate of 15-20 m/h. Maximum precision is required when the tracks are installed, and the sleeper shoes that are freshly embedded in the concrete cannot be subjected to vibration. The solution is provided by an innovative tunnel concreting train produced at the Putzmeister plant in Aichtal. Read the press release. 47/10.