A Wirtgen W 200 Fi cold milling machine has proved its athletic track and field prowess – helping to lay a new track at the historic Stadio Olimpico in Rome, Italy.
Built in 1927 as Stadio dei Cipressi (Cypress Stadium), the stadium has hosted a wide variety of major events, ranging from the Summer Olympic Games and concerts to the 2020 European Cup. The stadium in the centre of Rome is the scene of extensive renovation work, with the Wirtgen-supplied W 200 Fi proving a cost-efficient, resource-friendly cold milling machine with flexibility, speed and performance for the project.
The renovation was commissioned to prepare the sporting facilities in time for the 26th European Athletics Championships in 2024. The resurfacing of the athletics track followed on from the modernisation of the stadium for Euro 2020 football championship. The first step involved the removal of the synthetic track surface – also known as ‘tartan track’. The upper asphalt layer immediately below this was then milled off with the Wirtgen W 200 Fi cold milling machine and given the appropriate cross-slope for the new surface layer.
The so-called cross-slope, barely perceptible to the human eye, is essential for optimal water drainage from the track surface and is extremely important for runners. The resurfacing process followed in reverse order. A new layer of asphalt was placed on top of the remaining base layer. This was followed by an elastic layer, and then the later visible wear layer, consisting of EPDM (ethylene propylene diene monomer rubber) and PUR (polyurethane). Here, high quality paving of the asphalt sub-base is essential for ensuring the evenness and surface quality of the tartan track.
Tight schedule demanded a high-performance machine
Since the whole project was on a very tight schedule, the removal of the asphalt layer had to be completed within the space of two days, during which uncompromising quality of the milled surface had to be guaranteed. In view of this, the lead contractor chose to use a high-performance W 200 Fi large milling machine fitted with Mill Assist as a standard feature.
“The machine brings us the high speed and reliability we need. The automatic programs make our colleagues’ work easier, improve efficiency, and therefore also helps to reduce environmental impact. It’s exactly what we need for our projects,” said the project manager from lead contractor Schiavi S.r.l.
The milling team on the athletics track milled off the surface strip-by-strip. The big challenge here was getting a sufficient number of transport vehicles onto the site to remove the enormous volumes of milled material this produced.
With ideal logistics, a 2m class cold milling machine can mill off and transfer more than 8,000 square metres of surface layer material to transport vehicles for removal from the site in a single day. On this project, the logistical situation was extremely challenging, as the limited space inside the stadium made it difficult to drive the transport vehicles in and get them into position. However, the ‘compact’ model among the large milling machines not only delivers powerful performance, but is also extremely agile, which meant that manoeuvrability was no problem at all. This made it possible to complete the milling work and remove the milled material from the site within only one working day.
Site statistics
Total surface area of the athletics track to be milled: 4,000 sqm
Running track milled: 2,500 sqm
Infield areas milled: 1,500 sqm
Milling depth: 1-2cm