Newly constructed low-noise asphalt surface fails

Questions are being asked over the construction of a new section of the A1 autobahn in Germany. The highway stretch is being scrutinised due to surface failures and lies close to the city of Bremen but has been open for less than three months.
May 15, 2012 Read time: 1 min
Questions are being asked over the construction of a new section of the A1 autobahn in Germany.

The highway stretch is being scrutinised due to surface failures and lies close to the city of Bremen but has been open for less than three months.

The road carries around 70,000 vehicles/day and its construction was intended to reduce congestion between the port cities of Hamburg and Bremen. Numerous potholes are reported to have appeared in the surface of the highway. Given the recent severe weather, failures of older road surfaces are expected but these problems should not occur on links that have been so recently completed.

The investigations will focus on how water penetration into joints could have already caused the freeze-thaw process to break up the running surface or whether other problems such as material segregation or incorrect mix design could have been factors. The low-noise asphalt surface is crumbling at various points along the 73km section recently opened.

Asphalt milling, paving & compaction Highway & Network Management

Related Content

  • Developments in hybrid vehicles
    February 27, 2012
    There is an array of future vehicle solutions in development - Mike Woof reports. Ever since Henry Ford's Model T showed that the motor car could provide transport for ordinary people rather than being an exclusive toy of the rich, vehicle numbers have exploded. In every country around the world, vehicle ownership continues to grow.
    Read More
  • Bridge collapse on key I-5 route in Washington State
    June 24, 2013
    The news that a key highway bridge has collapsed in the US comes as gloomy reading for all in the highway sector. When a section of the Interstate 5 Bridge over the Skagit River in Washington failed in May 2013, a number of vehicles were plunged into the river. Luckily no-one was killed in the incident on the route, which is one of the main links between the US and Canada, and the parallel bridge was able to carry traffic, albeit with delays for users.
    Read More
  • Massey Tunnel project to be Design-Build-Finance-Operate-Maintain
    January 25, 2016
    The provincial British Columbia government in western Canada has chosen a Design-Build-Finance-Operate-Maintain (DBFOM) procurement model for the Vancouver region’s 10-lane bridge replacement for the ageing Massey Tunnel. The US$2.5 billion project includes a bridge and related Highway 99 improvements between Bridgeport Road in the adjacent city of Richmond and Highway 91 in the city of Delta. The 60-year-old tunnel now carries its limit of 80,000 vehicles a day and is often congested during rush hours.
    Read More
  • New radio wave technology assesses asphalt integrity
    March 14, 2017
    Real time information on asphalt density and uniformity can boost construction quality - *Roger Roberts, GSSI. Properly compacted asphalt is a major factor in the lifespan of a road, as inadequately compacted asphalt deteriorates at a more rapid rate than properly compacted material. With the billions spent on road construction and repairs each year, it has become a matter of urgency to find new technologies that can ensure the integrity of asphalt on newly paved roads. New radio wave technology is now avai
    Read More

Highlighted Content