ALSTOM Mainline track - Concrete track NBT

Alstom co-developed NBT for main-line owners seeking a concrete track i.e. a railway track  with  extensive  lifespan  and  high  infrastructure  availability,  which  can  be installed  as  faster  than  standard  concrete  track,  and  be  operated  for  mixed  traffic (both passenger-dedicated  and freight transport). NBT  is  composed  of  two  superimposed  concrete  slabs  (a  foundation  layer  and  a steel-reinforced  track  slab)  tied  together  via  a  shear  key  on  top  of  the  foundation slab, with  transversal  joints for concrete crack  control.