Features

How will the deep cuts hitting France's national budget affect French roads and highways? Gordon Feller discusses France has one of the most modern transport systems in Europe, the result of decades of public spending on the sector as well as other infrastructure. The government historically has awarded contracts to build infrastructure to French construction and engineering companies, some of which are now among the world's largest contractors. Among other achievements, France's infrastructure programme re

Mike Woof reviews the latest compaction market developments In the run-up to the upcoming World of Asphalt event in Orlando, Florida in March, the leading compaction equipment firms are rolling out upgraded and improved machines. With market conditions tough worldwide, customers are also likely to be encouraged with competitive deals on purchasing new machines and replacing ageing fleets.

With new roads to be built and existing ones to be maintained, one company is predicting a big increase in asphalt production Asphalt plant manufacturer Ammann says that four factors in particular will shape the future of the asphalt industry. The company, which has sold its first JustBlack asphalt mixing plant to Costa Rica through its Spanish distribution partner, EMSA, says that many more roads have yet to be built in the world. "Building the global road network will provide work for many generations to

Hyper-mobility is constantly demanded by customers who favour continuous plants, especially in France. However, compromises must always be sought in the high output equipment range, says Ermont (part of the FAYAT Group), and major progress has been made in the parallel flow field with the 500tonne/hr and 600tonne/hr TSM plants, whereas the Rétroflux type of the counterflow plants have lagged somewhat behind. This gap has now been closed with the development of the hyper-mobile RF 400, capable of producing 4

Hot-mix asphalt (HMA) is produced at specialised facilities where various mixtures of aggregate are heated and dried, combined with liquid asphalt cement (also known as bitumen), and either stored in insulated silos or loaded into trucks and transported to a job site. Aggregate heating and drying is accomplished with various types of dryers, depending on whether a batch or continuous process is used. The continuous mix process uses aggregate drum dryers, designed to heat and dry measured quantities of grave

Milling techniques remain one of the most widely used recycling methods Well-proven, cold milling techniques remain one of the most widely used methods for materials recycling in road construction. Milled road materials can be cleaned up and re-used in both asphalt and concrete highway construction. German firm Wirtgen has long dominated the market for road milling machines and has the largest share of the sector (as well as the broadest product range), although other firms based in Europe and the US are be

Highway safety could yet improve using available technology more widely Safety barriers still offer huge opportunities to improve accident statistics worldwide. There is a wide array of products on the market to suit all types of installation and with a diverse range of solutions for each application. Highway authorities have been installing barriers for many years now and the technology continues to improve, however an analysis of accident statistics shows that barriers offer further potential. Details fr

Ian Fraser, Tensar International’s director of application technology, looks at the latest lessons learned from the flood-hit Workington Bridge project in Cumbria, North West England. Rarely has a disaster like the Cumbrian floods demonstrated with more clarity the benefit of designing working platforms and bridge abutments to tested performance standards, as opposed to slavishly following accepted, but often much less efficient, design norms.

Characteristics of traffic speed and flow in managed freeways - *Dr Adrian Withill. In order to maximise the benefits of existing infrastructure, in terms of reduced delays and increased safety, many governments have recently been introducing projects that measure traffic speed and flow and automatically introduce advisory or mandatory speed limits. Such schemes tend to offer relatively quick wins at relatively lower capital costs than traditional highway construction. In light of the current world economy,

India’s new Formula 1 motor racing circuit, with its tight construction tolerances, demands considerable driving skill. More than 500 million people worldwide watched the first Formula 1 motor race in India's history. The drivers were thrilled by the new asphalt circuit with its numerous bends and the peripheral area around the new race track at Greater Noida near the capital New Delhi, which were built by machinery from German company Vögele (a member of the Wirtgen Group). Working with four Super 1800-

Billions of dollars are invested each year in highway construction and maintenance projects across the world. Up to 5% of these funds are estimated to be lost on account of insufficient ethical and financial oversight. Highway Agencies and tendering authorities are particularly at risk. Implementing financial integrity principles stretches public budgets further and is beneficial to the relation with private sector contractors. According to the World Bank, the most common forms of wrongdoing are collusion