Materials

Turning aggregates production into a truly industrial process and providing customers with accurately fine-tuned aggregates mixes is the secret behind the success of Vezzola, a family-owned company with operations in Italy's Lake Garda region. Vezzola's fully-equipped stationary plant in Montichiari, probably the country's most modern facility of this type, can produce up to 500 different aggregates recipes. The plant is another successful delivery by Metso's Mining and Construction Technology. Processing s

Imaginative formwork, often using modular components, is helping to shape some challenging bridges worldwide. Patrick Smith reports Traffic volumes in and around Prague have swollen massively in recent years, pushing the existing road network to the limits of its capacity. To permanently ease congestion in the Czech capital's centre, a multi-lane orbital motorway is under construction as a high capacity bypass for central Prague and to link up all the motorways and other major highways radiating from the ci

Two technologies combined to give a heavily used bridge a new surface that should last for years The Avonmouth Bridge carries the M5 motorway over the River Avon, and is a vital part of the road infrastructure in south-west England, linking the counties of Somerset, Devon and Cornwall to the rest of the country. Completed in 1973, it carries commuters to the city of Bristol, and to South Wales, along with holidaymakers. The 1.4km long steel box girder bridge comprising a 16,000m2 steel decked central span a

Work is progressing apace on the biggest infrastructure project in Europe, the Transylvania Motorway or Autostrada Transilvania (A3) in Romania, with completion scheduled for 2013. The four-lane, 415km motorway, stretching northwest from Brasov in central Romania, at an altitude of nearly 600m, will reach the country's northwestern border with Hungary at Oradea in Câmpia Crisanei at 130m above sea level, and will connect the cities of Brasov, Fagaras, Sighisoara, Târgu Mures, Cluj-Napoca, Zalau and Oradea.

The multi-span reinforced concrete viaduct at Torano, about 100km east of the Italian capital Rome, is a major structure on the main E80/A24/A25 Autostrada crossing central Italy. The Viadotto Fiume Salto was opened in the late 1960s, but the use of de-icing salts during winter months has since caused considerable calcium chloride damage to the structure forcing the Italian Highways Authority and the Autostrada di Parchi's owner Toto to carry out extensive repairs. The renovation estimated at around €5 mill

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