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Novel crushing and screening developments are coming to market - Mike Woof reports A wide array of innovations and market developments are occurring in the sector for quarrying machinery. New technologies are being introduced while business developments are also changing the face of this market segment. There is strong interest in new technology from industry too and this was well highlighted by data from the organisers of the Hillhead quarry show in the UK. The organisers revealed that there was a jump of

The use of reclaimed asphalt pavement (RAP) is common practice in many countries. The aged bitumen from RAP has a lower penetration and is more viscous than it was when first mixed. The reclaimed bitumen is generally balanced by the addition of fresh binder softer than the traditional one used to produce hot mixes. However, balancing penetration and softening point or viscosity does not produce an identical bitumen to the original one. One fundamental option is the regeneration of the aged binder in order t

The historic city of Raleigh in North Carolina is one of the few cities in the US that was planned and built specifically to serve as a state capital and its population and traffic volume have grown enormously in recent years An indicator of Raleigh's growth has been the need for an expanded roadway system to serve Wake County. As early as the 1970s there were plans for a Western Wake Expressway. This developed into a 112km, interstate-grade beltway, known as the Raleigh Outer Loop, which will encompass Ral

A series of rural road rebuilds have improved transport connections in the Czech Republic, helping to boost connectivity and the local economy The roads around Brandýs nad Labem, some 25km to the southwest of Czech capital Prague are crucial arteries to the rural and agricultural areas of the country. An assessment by regional authorities indicated that these roads are in need of repair. That led to cold planing and paving work on a series of rural roads near Brandýs nad Labem. The regional authorities had

Dual layer paving offers benefits to wear life as well as major cost reductions - Mike Woof reports The concept of laying the binder course and wearing course at the same time is not new to the road construction market. Various contractors have been working on systems over a number of years, with several manufacturers helping directly with these projects. A number of firms have investigated this method but three manufacturers in particular, Dynapac and Vögele in Europe and Sumitomo in Japan, have made major

The country of Qatar, located on the Persian Gulf, developed a master plan to build a new replacement airport in its capital city of Doha, the New Doha International Airport, in 2003. Its goal is to have a facility capable of handling 50 million passengers; two million tons (1.8million tonnes) of cargo, and 320,000 aircraft landings and take-offs each year by 2015. Phase one of the aggressive project is scheduled for completion early next year. The Tayseeir Contractors Company Joint Venture, including Conso

A mobile crushing solution at an Argentine quarry is said to increase production by 100% Caminos del Mercosur found success in the mid-1990s supplying crushed rock for the construction of new roads. Recently the company has enhanced its reputation as an innovator in aggregates production and supply through the adoption of tracked crushing technology. Based in Posadas, Misiones, Argentina, it says it has modernised its production capabilities through investing in a modern, mobile crusher, the Sandvik supplie