Cold recycling of asphalt at a central plant: follow up of test roads in Halland, Södermanland and Gävleborg counties


Cold recycling of asphalt is a resource-saving technology because the materials do not need to be warmed up. Moreover, by using this technique, up to 100 per cent reclaimed asphalt concrete (RA) could be recycled. However, in order to achieve good results, the old RA should be processed in a proper manner. The report presents results of tests carried out on road N-714, part Vessigebro–Ätrafors and road N 530, part Såghuset–Skönhult in Halland in addition to road D-976, Strängnäs and road D-957, Vansö in Södermanland. Moreover, this report presents results of tests performed on road X-583, part Ljusne–Sandarne in Gävleborg. The mechanical properties have been investigated by indirect tensile strength and stiffness modulus for RA mixtures and drill cores. The tests results showed that part of the damage that may be encountered when using cold recycled asphalt coatings can be in the form of loss of surface materials, mechanical damage due to relatively soft road surfaces and unevenness of the road surface.



Millions for research into maritime transport and the environment

Maritime transport is a major source of emissions of harmful air pollutants and carbon dioxide. In a new project, a research team from the Swedish National Road and Transport Research Institute (VTI) and the University of Gothenburg has received SEK 6.4...


New research programme for more efficient travel

The Swedish National Road and Transport Research Institute (VTI) is playing an important role in a major new research programme to find radical solutions leading to fewer trips and more efficient travel, along with tools to enable better use of roads and...


Simulator used to practice emergency responses safely

Emergency responses of the police, ambulance, and rescue services are associated with a high risk of accidents, but practicing them in real traffic is neither safe nor permissible. A simulator-based method developed by the Swedish National Road and Transport...


Simulation of cut-in by manually driven vehicles in platooning scenarios

A study in a VTI-driving simulator has showed that a platoon will be able to handle a cut in from a manually driven car. The results of this study have recently been presented at two conferences in Japan.



The five-year anniversary of European Road Profile Users' Group (ERPUG) Forum will take place at Ramboll head quarter, Copenhagen, Denmark October 19-20, 2017.


Self-driving buses in Sweden next year?

A self-driving, fossil-free bus. This idea might become reality through a forthcoming collaborative project involving the Swedish National Road and Transport Research Institute (VTI), Linköping University and several other participants. The project group aim...