Asphalt milling, paving & compaction

Sumitomo has developed a larger, high performance paver to meet the needs for productive highway class machines in export markets. The new HA90C-2 is based on the earlier HA90C paver, which was only sold in China and also shares a common design and layout with the existing and well-proven HA60C/W. However the new HA90C-2 offers increased production and performance and has two new screeds allowing more paving options.

Detroit is one of the three worst cities in the US for poor weather, along with Chicago and Toledo For Metro Detroit the winter of 2013-14 was the second snowiest season on record, bested only by the winter of 1880-1881. This had a terrible effect on the city’s roads and in the suburb of Southfield, officials assessed the poor state of the asphalt and concrete streets and realised the conventional patch and fill programme would not be sufficient.Instead the contract was modified to cover mill and resurfacin

Atlas Copco introduces new low emission diesels in its latest large paver models - Mike Woof writes The large pavers from Atlas Copco’s Dynapac range are now compliant with the Tier 4 Final/Stage IV emissions regulations due to the installation of new engines. Running costs are also said to have been reduced due to lower fuel consumption and the firm claims each of the latest models can offer a fuel saving of 4200 litres/year, as well as a reduction in CO2 emissions of 11tonnes/year.

Vögele is offering high performance paving with its new machine - Mike Woof writes Vögele is introducing a new medium class tracked paver, the SUPER 1600-3i and its rubber tyred sibling, the SUPER 1603-3i. The company is also offering an update to its SprayJet package for paving thin overlays. Both the SUPER 1600-3i and SUPER 1603-3i share the benefits of the firm’s Dash 3 features, with the tracked machine able to handle paving widths up to 7.5m and the rubber tyred version offer a maximum width of 7m.

Tens of thousands of bridges in the United States are in desperate need of repair. But where to begin analysing their deteriorating state? Roger Roberts* investigates tips and techniques for ensuring bridge safety The average age of America’s more than 600,000 crumbling bridges is 42 years – many are 60 to 80 years old. The situation is dire, with many described as functionally obsolete, according to the American Society of Civil Engineers’ latest edition of its Report Card for America’s Infrastructure.

Dubai’s busy international airport is now benefiting from new runway and taxiway areas that will help boost capacity. The upgrades are much needed as the airport is one of the world’s busiest in terms of international flights. Data from the International Air Transportation Association (IATA) says that in 2013, air passenger traffic worldwide topped 3.1 billion, and demand is expected to continue to grow. The combination of more flights and growing numbers of larger and more sophisticated aircraft like the A

Cold-in place recycling method provides fast road rebuild in Brazil In Brazil a road contractor has carried out a high quality road rebuilding job, using novel techniques. Contractor Brown Brown is located in Santa Teresinha in the state of Bahia and recently carried out a two-week job for the company to rehabilitate sections of highway BR-381. The highway is an important route in Brazil and runs from Sao Paulo to Belo Horizonte. Highway BR-381 or Rodovia Fernão Dias, as it is called, stretches some 576km

This month we learn about a new test which is helping to predict the performance of asphalt mixtures containing recycled materials and modifiers, and we showcase some of the new testing equipment recently launched - writes Kristina Smith Researchers in the US have come up with a new test to help owners and contractors better predict the performance of their roads. “The problem is that the current tests cannot determine the performance of new materials,” said Dr Haleh Azari, manager of the AASHTO Advanced P