Features

A novel technique is now being introduced in the UK that can help cut construction costs, as well as the time needed for road repairs. Connect Plus, the company that finances, operates and upgrades the 400km M25 network on behalf of the UK’s Highways Agency, has pioneered an innovative method for the replacement of life-expired concrete motorway The introduction of this method is helping reduce the delays experienced by drivers by as much as 80% in the sections of road where it is now being implemented.

Two of the leaders in the concrete paving sector are broadening their range of technology, with new systems now coming to the international market The concrete paving market is a niche segment of the construction equipment business, with only a few specialist firms competing. North America is the home of concrete slipforming technology and it is no surprise that all but one of the leading firms in the sector are based in the US. The technology is used worldwide however and with asphalt prices at a high, c

The machine control sector has been lively in recent months with a major acquisition, the unveiling of new software innovation and landmark testing of new technology to monitor paving temperature. Guy Woodford reports The state road construction authority in the German state of Saxony-Anhalt (LSBB Saxony-Anhalt) has become the first nationally to test MOBA’s new PAVE-IR Scan temperature measurement system at a works site.

Leading formwork manufacturers have secured some impressive contracts in Africa, as the continent’s transport infrastructure continues to improve at a rapid pace. Meanwhile, other bridgework equipment companies are also seeing their products in demand in Africa, as well as North America and Australia. Guy Woodford reports

Advanced machine control technologies are speeding site layout and construction operations Canadian house building firm Mattamy Homes has brought in a contractor that has used sophisticated equipment to build the roads around its new development in Oakville, Ontario. The site is just 30 minutes drive from Toronto. Phase 1-A of the project is under construction and nearly every one of the 550 homes that will be built there has been sold already. Additional phases will bring the total number of homes to 1,800

Two important routes in Germany, the A9 and A6 autobahn highways, have benefited from the use of the latest Wirtgen slipforming machines. The A9 is a particularly important route in Germany as this 529km link connects capital Berlin with the southern city of Munich, running through Brandenburg, Saxony-Anhalt, Saxony, Thuringia and Bavaria.

In Tucson, Arizona, contractor McNeil brothers is using a two-track GOMACO concrete slipformer on a 3.2km stretch of highway. This project is for the Arizona Department of Transportation (ADOT) and involves widening Interstate 10 to four lanes of traffic in each direction between Ruthrauff Road and Prince Road in Tucson. This new stretch was needed to better handle increasing traffic demands in the city and includes rebuilt entrance and exit ramps to improve access to the city.

Concrete paving is being carried out on a key section of Interstate 20, close to the US city of Colombia in South Carolina Contractor Zachry Construction has had success using its Guntert & Zimmerman concrete slipformer for an Interstate paving project in South Carolina. The firm has been using the machine on the US$64 million project to resurface a section of Interstate 20, close to the city of Columbia.

Canada’s vast tar sands operation is providing a major financial boost to the country and this industry has relied heavily on Fort McMurray airport. Situated in Alberta, Fort McMurray is a remote town that has seen a huge expansion following the upturn in activity in the tar sands operations nearby. Although the massive resource has been worked for decades, only in the last 15 years or so have new extraction methods made the operation truly economic. Since 2010 Fort McMurray’s population has increas

With an increasing number of aircraft using Jeddah International Airport in Saudi Arabia, the authorities realised there was a need to upgrade the facilities. King Abdulaziz International Airport opened in 1982 and serves over 15 million passengers/year, with a high percentage travelling on the annual Islamic pilgrimage to Mecca, some 80km away. The city has the largest port on the Red Sea and is named after Abd al-Aziz ibn Saud, the former king and founding father of Saudi Arabia, and is one of the kin

Upgrades to a slipform concrete paver built in 1999 allow it to use current technology. US firm Streb Construction has taken a novel approach to its paving fleet by upgrading a CMI paver built in 1999 to use modern machine control technology. The company bought the CMI SF3302 machine new and this piece of equipment had logged a high number of hours since its purchase. However the company realised that this proven piece of equipment could be made to operate more efficiently and productively, as well as more

Machine control technologies were pioneered in the concrete paving sector with systems having been used for over 10 years. Leica Geosystems was the first of the machine control technology suppliers to offer these systems on concrete slipforming machines and has developed a strong position in this segment. However the company met resistance from some quarters in the construction market and specialist Karl Soar said that some contractors were very reluctant to give up using conventional stringlines. He said,

Machine innovations and machine control advances are the latest news in the concrete paving sector - Mike Woof reports. While machine control systems were pioneered in the concrete paving market, continuous refinement of the technologies is offering major improvements for customers. Customers have a choice now of more than one supplier while the packages are said to be more user-friendly than before. And in addition, the systems themselves can be more closely integrated into the machines due to advances mad

Although it has been around since the 1970s, roller compacted concrete (RCC) is starting to look a whole lot more attractive, thanks to the rising price of bitumen. Now the challenge is to define specifications and tests to help ensure quality - Kristina Smith reports. At a meeting of the American Concrete Pavement Association in December 2011, there was a sea-change in the attitude towards roller compacted concrete (RCC). Up until that point, the feeling among the 400-plus members, of which half are contra

From density tests on a Mongolian gold mine project to an all-singing, all-dancing asphalt tester, Kristina Smith reports on some of the latest new products in materials testing. Perhaps understandably, nuclear density gauges can present contractors with some order to move them at all. “One of the problems with nuclear soil gauges is the restrictions on movement,” said John Lamond, Manufacturing. “If you are a contractor projects cross-border, it’s a real challenge to move a nuclear density gauge around.”