Asphalt milling, paving & compaction

Advances in asphalt compaction are offering improved performance right across the spectrum of size and capacity – Mike Woof writes. New asphalt compaction machines are offering major gains in performance as firms develop new systems. Large and small asphalt compactors now offer higher output than earlier generation machines, while delivering better quality and lower fuel consumption as well as gains in reliability, durability, safety, ergonomics and operator comfort.

Asphalt paving is a challenge in the rough terrain of the Swiss Alps and nowhere more so than in the mountain village of Castiel. Extreme slopes, narrow roads and steep precipices place demands on the paving team and machinery. In the town of Castiel, in the Arosa district of the canton Graubünden, contractor HEW Bauunternehmung opted to use Vögele’s Super 1803-3i wheeled paver for rehabilitation of the combined base and surface course on a farm track. The site is around 1,200m above sea level and an

Formwork from Doka is playing a key role in constructing the airport’s buildings. At times as many as 80 cranes will be in use. Two-thirds of the formwork for the first construction phase are supplied by Austrian experts for formwork solutions, Doka. On this build the Doka engineers are combining in particular Timber formwork beams H20 eco and H20 top and load-bearing towers, plus Framed formwork Framax Xlife and Frami Xlife and Large-area formwork Top 50. The formwork systems from Doka are in use in many a

The fleet used comprised two Wirtgen W 210s and one W 200i, as well as two Wirtgen WR 2000 soil stabilisers. Located roughly 8 km north-west of the city of Alghero, Alghero-Fertilia Airport is one of three commercial airports on the Italian island, along with Cagliari Elmas and Olbia. Built as a military airport in the late 1930s, Alghero-Fertilia still occasionally handles military aircraft. However commercial flights represent its main traffic and as it serves the provinces of Sassari and Oristano, it is

Sri Lanka’s main international airport now features a new runway surface that will help improve air transport efficiency at the facility The project was carried out successfully, despite a tough time schedule, boosting safety at the airport. This new runway will help increase capacity at the airport, allowing Sri Lanka to develop the tourist sector on which the country depends heavily for its economic growth. The work at the international airport for Sri Lanka’s capital Colombo was carried out with the

A new runway surface has now been laid at MacDill Air Force Base in the US, located approximately 6.4km south-west of downtown Tampa, Florida. This facility is the base for the US Air Force’s Air Mobility Command, which provides airlift, special missions, aerial refuelling, and aeromedical evacuation for the armed forces. MacDill is home to 16 KC-135 Stratotankers and three C-37 Gulfstreams, which use the runway every day. At any point, there will be a steady flow of aircraft departing and landing on the

Beijing ranks amongst the five busiest airports across the globe and its runway surfaces face tough stresses as a result. Over 94 million passengers flew through Beijing Capital Airport (BCA) in 2016 and as many as 70 flights/hour can take off and land during peak times. The 60m-wide middle runway of Beijing Capital International Airport is the busiest of the three runways, with a landing and take-off flight ratio of up to 40%. This runway was first rehabilitated in 1996 and then repaired in 2013 and 2015

Construction of Istanbul’s new airport facility is benefiting from the use of a large fleet of machines from the Wirtgen Group. When it is complete, this will be the world’s largest airport and will be able to handle 150-200 million passengers/year as well as 6 million tonnes of freight/year. This will make the facility substantially larger than the world’s current largest airport, the Hartsfield-Jackson Atlanta International Airport, which handles around 105 million passengers/year.

BituChem, the manufacturer of AirPatch, says that the product formulation can be altered so local aggregate is chemically compatible, making the pothole patch more durable. AirPatch is a sprayed application that provides an excellent break and pothole repair solution. It repairs potholes and other surface deformations by spraying the surface with aggregate. BituChem says that AirPatch is also a superb adhesion binder.