Zero carbon dioxid technology for asphalt

Purpose and goal

The aim is to develop a CO2-free heating for asphalt. A method with microwave technology has been tested where magnetite, an energy absorber, is mixed into the asphalt. Amount of magnetite and size have been determined by calculations, laboratory work and full-scale experiments. Tests were done with a pilot <0.5 tons. heated asphalt meets the requirements for pavements. working environment is better, we get less emissions including radiation and lower noise levels than with today´s technology. there is a market, large amounts of asphalt are laid annually. gender equality is improved.>

Expected results and effects

Heating of asphalt by microwaves/electricity reduces CO2 emissions. Cleaner technique will give better working environment and more attractive working sector to both women and men. Sustainability will be in focus. The degree of reused asphalt can increase with economy by the new technique. New logistic patterns will develop when heating and mixing of asphalt take place close to construction sites, i.e. less long transports with heavy cargo. Heating process can be digitalized and be more accurate, thus reducing the risk of overheating. The technology can get a world wide spread.

Planned approach and implementation

Project has consisted of 10 parties with different experiences, knowledge and areas of expertise. Progress has been created by collaborating and sharing knowledge between each other. Meetings have mainly been held digitally. Studies have taken place through theoretical studies, interviews with people in the industry and through practical experiments. The project has worked with recipes, pilots and field trials, governance, market and business, work environment, gender equality and communication.