ABSTRACT
SPEA Engineering, has prepared the Definitive Project for the adaptation of the Genoa motorway junction for the A7/A10/A12 motorways, also named “La Gronda di Genova”. The construction of the Gronda involves, among the various activities planned, the treatment of approximately 6.8 million cubic meters of potentially asbestos-containing debris deriving from the excavation work carried out mostly by two Tunnel Boring Machines (TBM). The excavated material will be temporarily stored, analyzed and, if having low asbestos content, reutilized for the enlargement of the airport landing strip.
This material will be transferred in the form of a slurry through a special pipeline having a length of 9 km, For reducing wear and pump power consumption the transporting media will be a bentonite based fluid.
