Asphalt milling, paving & compaction

Dynapac is introducing its top-of-the-range CC624HF tandem asphalt roller to the Asian market at Bauma China. This 14tonne class high frequency tandem asphalt roller is aimed at a market with contractors, road contractors and rental companies. The CC624HF features a drum width of 2.13m and produces a static linear load on the front and rear drums of 30 and 29.1kg/cm respectively. A choice of engines is offered, rated at 93 or 113kW. In addition to the central water tank, optional extra capacity can be speci

French paving contractor Révillon is now using a new Cat AP300 wheeled asphalt paver, which replaces one of its two older Bitelli BB730 units. The firm took delivery of a field follow unit of the AP300, the model Caterpillar has developed to replace the BB730. Supplied by French Cat dealer Bergerat-Monnoyeur, the AP300 has met Révillon's expectations in terms of performance and is said to offer benefits over the earlier BB730. The new machine is aimed at the 6-8tonne, 1.7m paving width but is said to offer

Troxler Electronic Laboratories is celebrating 50 years of providing services to the highway industry. In this half-century, Troxler says it has been awarded over 100 patents by the US Patent Office for innovative products that have improved or created many of the new technologies used today in the construction industry. The company is originally known for its nuclear moisture density gauges, but it also provides non-nuclear electromagnetic density devices as well as Superpave gyratory compactors, asphalt i

A versatile solution has helped with a tricky project at the Grand Canyon in the US – Pierre Peltier When Intermountain Slurry Seal, a division of Granite Construction, submitted its bid in 2009 to repair roads and parking lots along the Grand Canyon’s North Rim, the company knew the job would come with challenges. The remote roads leading from Jacob’s Lake, Arizona, to the North Rim Lodge had deteriorated to a point that the Federal Highway Association’s (FHWA) Central Federal Lands (CFL) Highway Division

In the UK, Foster Contracting was part of the team that carried out road improvements to the main route along the historic promenade of the seaside town Great Yarmouth, in eastern England. The harshness of the sea environment coupled with traffic loading caused the road surface to deteriorate, leading to brittle cracking of the thin surface course and also reflective cracking from overlain service trenches and patches. The town centre was already undergoing a major regeneration and as part of this scheme, i

An EC-funded project aims to coordinate research on essential tyre/road interaction parameters. A competition will help raise awareness of the project Drivers need grip between the tyres and the road to accelerate, decelerate or change the direction of a moving road vehicle. Grip is provided by the skid resistance properties of the road surface in combination with the friction characteristics of the tyre. This combination is critical for safe driving, and many European countries have investigated the corre

Automatic 3D machine guidance is a highly sophisticated area and a high level of expertise is often required to ensure applications of the advanced technologies work as desired. Fugro is a specialist firm that has gained experience using 3D guidance tools over many years and for certain tricky projects, Hexagon, the parent of Leica Geosystems, has turned to Fugro for assistance. For one difficult job in particular, Fugro's specialists were brought in at the request of an Icelandic contractor. The project ca

Melbourne winters are known as some of the coldest of all state capital cities on Australia's mainland, and its summers can be brutally hot. As a result, roads in the region need to be regularly maintained to ensure safety and promote longevity. Pioneer Road Services, headquartered in Victoria, recently took delivery of the first Cat AP300 asphalt paver to Australia, and it will be the first to play a role in maintaining the city's roads throughout the seasons. With the help of Cat dealer William Adams and