Hot roads in the winter

Tests have been conducted on vulnerable road sections using waste heat from district heating plants to get rid of the ice.

Ice and frost are major issues on winter roads in Northern Europe. This is especially true for roads with steep slopes, viaducts and bridges. Tests have been conducted on vulnerable road sections using waste heat from district heating plants to get rid of the ice. And now another step is being taken through a project initiated by researchers at Chalmers University of Technology, with financial support from the Swedish Transport Administration and the Norwegian Public Roads Administration.

The method is based on a ground-source heat pump system, which stores heat in the bedrock, applying the same principle as when heating a building. But as a road has a much greater surface area than a building, it is a matter of being able to supply enough energy for the ground-source heat.

The solution currently being tested involves utilising the solar radiation from the summer months. The heat on the surface of the road heats a liquid circulating in pipes, which are installed in the base course if it is an asphalt pavement. When the pipes pass the ground heat well, the surrounding rock is heated up. The energy is then stored in the rock and used during the winter by pumping the heat back to the road.

“Another positive effect is that the road is cooled down when you capture the heat during the summer, which can reduce the risk of deformation and bleeding,” says Jan-Erik Lundmark, Senior Advisor Road Maintenance, the Swedish Transport Administration.

Projects

PMB with biogenic material reduces climate impact

Nypol RE is a newly developed, polymer-modified bitumen with biogenic material that increases the useful life of the pavement while reducing climate impact.

Noted

Bitumen to focus on core European markets

The world is changing at a rapid pace, and Nynas is now taking strategic steps to strengthen its competitiveness in core markets. Nynas will create a business footprint focusing on customers in the naphthenics and bitumen market in Europe, and significantly improve efficiency to deliver a competitive customer experience. Furthermore, Nynas will focus on four strategic sustainability areas: product development, environment and climate change, health and safety as well as people and society.

Safety

Appreciated Safety Day in Norway

To minimise the risk of accidents and injuries when loading and unloading bitumen, Nynas holds annual driver meetings.

Interview

Brains of Nynas: Sarah Badley

Sarah Badley works as Bitumen Sales Manager, covering the North of England, but is also responsible for the Nynas Bitumen Customer Service Centre in the UK. She joined Nynas in 2014, having spent many years working in the motor industry with brands including Porsche, Mercedes-Benz and BMW. Find out what's on her mind.

Noted

All the key players are working together to achieve the best possible result.

Katri Eskola, Specialist Road Maintenance Finnish Transport Infrastructure Agency

Talking point: The COVID-19 pandemic


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