Paving underground

A Power Curbers 5700C machine is being used underground in Turkey to slipform the U-shaped concrete platforms on the walls of a new tunnel project.
February 14, 2012 Read time: 1 min
A 307 Power Curbers 5700C machine is being used underground in Turkey to slipform the U-shaped concrete platforms on the walls of a new tunnel project. These will house electrical conduit and serve as maintenance walkways when the tunnel is in operation.

This machine is working on a railway tunnel that forms part of a new link in Turkey's commercial centre Istanbul. This link is intended to reduce chronic traffic congestion that occurs particularly at peak periods on the crowded D100 highway that runs East-West on the Asian side of the city. The machine is working around 45m underground and has been fitted with a special 4.5tonne mould designed for this job. The job is challenging in several ways and aside from having to deliver concrete through chutes placed into the tunnel every few kilometres, securing the concrete to tunnel walls that vary in diameter has presented a real challenge. The tunnel walls are wider at train stations and then become narrower again, so Power Curbers designed a mould that can be varied hydraulically in both height and width.
Concrete milling, paving & compaction Road Structures

For more information on companies in this article

Related Content

  • Increasing importance of alternate truck routes
    February 14, 2012
    The fabled Silk Route from China to Europe takes many forms, and is again becoming increasingly important as Patrick Smithreports The ancient Silk Road was never a single caravan route, but covered hundreds of kilometres in width extending in length for around 10,000km. This is the view of the European International Road Transport Union (IRU), and many other countries and organisations, who point out that it is a system of routes covering many countries via a series of branch roads that dates back some 2
    Read More
  • Concrete barrier challenge
    April 11, 2012
    The 5700C-Max unit from Power Curbers has now been used on a tricky shoulder widening job in New South Wales, Australia. The machine carried out the job close to Robertson in the Southern Highlands, about 1.5 hours drive to the south of Sydney. The job required the construction of a 200m long section of barrier, built to the requirements of the Roads and Traffic Authority (RTA). The contractor hand-formed the concrete shoulder as it was about 3m wide at the start and narrowed down to 1m at the end.
    Read More
  • Italy's strategic tunnel link
    August 21, 2012
    The world's largest tunnelling machine is completing Italy's important road connection between Bologna and Florence - Adrian Greeman reports For just under a decade a huge programme of highway construction has been underway in the mountainous region between Bologna and Florence, realigning a section of the A1 highway nearly 70km long. The new section, through major tunnels and across high viaducts, will greatly increase capacity on Italy's most important highway.
    Read More
  • G&Z pave the way as East meets West
    March 28, 2014
    The Silk Route is one of the oldest trading links between Europe and Asia and is being upgraded with some of the newest equipment. The nation of Georgia is located on what is known as the ‘crossroads’ between Western Asia and Eastern Europe. It lies to the east of the Black Sea and is on one of the shortest routes between western China and Europe. Since the Middle Ages this strategically important country has played host to one of the network of roads collectively known as the Silk Route. For much of the 20
    Read More

Highlighted Content