‘The completion of the Salerno-Reggio Calabria motorway before the end of 2016 was the target set by the Italian government. This challenge was readily accepted by Marini in collaboration with the Bulfaro Company and the latest and most innovative model in the Marini batch plant range was put into operation.
Macrolotto 3.2, on the stretch between Laino Borgo and Campotenese, represents 40 km of motorway at more than 800 m. above sea level in the Pollino National Park situated in the Calabrian Apennines, one of the most critical stretches of the Salerno-Reggio Calabria link.
Over the last 35 years, the Bufaro Company, based in Senise, Basilicata, has achieved considerable success in public and private infrastructures and is known for its professional performance. With a workforce of more than 100, Bufaro (working on behalf of CMB Ghella) readily accepted the challenge of laying the entire road surface, which will be completed in less than one year.
Marini’s XPRESS plant was chosen because of its high degree of mobility, without giving up any of the advantages of a stationary plant, and is proving to be the ideal solution for facing this type of demanding operation.
The plant is made up of a series of functional separate trailer units for the cold-feeders, the dryer, the filter and the mixing tower with the hot elevator. A significant feature that distinguishes XPRESS from other plants is its installation without the need for a crane. All the modules are completely self erecting, including the entire mixing tower, the heart of the plant: the mixing level is elevated thanks to a series of hydraulic jacks and the screen (which is transported at the back of the trailer to keep the trailer within road transport restrictions) is positioned above the aggregate hopper by winch-assisted sliding on tracks. The raised position of the control cabin, incorporated into the main trailer, guarantees maximum visibility for the operator over all the production processes of the plant.
In the personal configuration chosen by the client (five cold feeders, two bitumen hot-oil tanks, one 30 cu.m. self erecting filler silo and one 25 cu.m. mobile asphalt storage bin) the plant can reach a maximum production level of 200 tph, with an average production over 160 tph, even in damp conditions. A high percentage and flexible amount of RAP is used through the recycling lines into the dryer drum and the mixer, without compromising the speed of erection and dismantling of the plant.
Converted into numbers: 110,000 tons of asphalt, both binder and base, have been laid down over two and a half months, with regular use of 10% RAP in the mixer and 20% in the dryer. The project envisages the production of just less than 200,000 tons, including base, binder and wear course. This explains why, with 60% of the work completed and with 6 months left to go before the consignment, the challenge has been well and truly contested. CEO Antonio Bulfaro enthusiastically admits that he is completely satisfied with the results of the XPRESS 2500, in terms of its production, performance and reliability.