Concrete barrier challenge

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.
April 11, 2012 Read time: 2 mins
Using the new power curbers 5700-c with the Max package has allowed an australian contractor to slipform a barrier and shoulder for a road project
RSS

The 5700C-Max unit from 307 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. The road featured a steep bank on the run up to a bridge, which was why the section had to be upgraded to boost safety. The shoulder was made wider and a barrier wall installed to provide protection as far as the bridge parapet. Construction involved the use of some unusual techniques and the shoulder was excavated and then filled up with high density polystyrene. The concrete shoulder was then poured on top of this, with dowl bars set in the concrete for the wall to attach to. Once the wall was completed, the RTA used shotcrete on the back of the wall to seal off the polystyrene and blend it into the bottom of the structure.
Concrete milling, paving & compaction Road Markings, Barriers & Workzone Protection

For more information on companies in this article

Related Content

  • Growing niche market for roller compacted concrete
    February 20, 2012
    A growing niche market for roller compacted concrete has prompted manufacturers to offer solutions. Mike Woof reports. Increased demand for roller compacted concrete (RCC) machines in certain applications mean that this is now a growing market, with manufacturers having developed new machines for this sector. RCC comprises uncrushed and/or crushed aggregate, hydraulic binders and may also contain concrete additives. It is mixed in a concrete mixing plant on or near the job site and one of its main benefits
    Read More
  • Scotland’s new Queensferry Crossing over the Forth Estuary
    December 23, 2015
    The new Queensferry Crossing under construction in Scotland will be the third landmark bridge spanning the Forth Estuary - Mike Woof writes When the new Queensferry Crossing over the Forth Estuary opens at the end of 2016, it will be the third landmark bridge to be built spanning this short stretch of water. Lying alongside the existing road bridge and the historic rail bridge, this new structure will be as groundbreaking as the two earlier crossings were at the time of their construction.
    Read More
  • Innovative, flexible bridge formwork systems
    February 14, 2012
    Innovative formwork systems have been used to construct a variety of bridge structures. Patrick Smith reports. As part of the work on Germany's new A4 autobahn near Eisenach, the contracting joint venture awarded the formwork contract for two of the three viaducts to Doka. What makes this assignment so special to the company is that although the two steel composite bridges each have very different cross-sections, the JV is using the same overslung composite forming carriage to pour the carriageway slabs of
    Read More
  • Innovations in concrete paving technology
    March 16, 2012
    Paving with concrete offers a strong and long life base for a roadway, with manufacturers continuing to develop technologies – Mike Woof reports. Innovation comes fast in the concrete paving market with a number of specialist suppliers offering an array of solutions to meet the needs of slipforming contractors. These machines can be used for a range of applications from large-scale airport runway or highway construction duties, tunnel jobs, bridge decks, barriers, traffic islands and kerbs. Because the app
    Read More

Highlighted Content