Zeolite-foamed asphalt or biopolymer-modified asphalt has a wide range of applications. The environmentally friendly solution, combined with the production of bitumen and asphalt mixtures, has been recognized by the Patent Office of the Republic of Poland.

A surprising solution

The project involved the collaboration of doctoral student Michał Wróbel and experts from the Lublin University of Technology: Dr. Agnieszka Woszuk, Professor Wojciech Franus, Dr. Szymon Malinowski, and Dr. Lidia Bandura.

The research team sought to develop a more environmentally friendly pavement. Their research revealed that efficient asphalt production was possible by incorporating biopolymer-modified asphalt or zeolite-foamed asphalt, which significantly reduces the temperature of the production process.

One kilometre of the road – a method for disposing of up to 1200 end-of-life tyres

Lotos Asfalt, a Polish pioneer in the practical application of sustainable asphalt, explained by Agnieszka Kędzierska, a specialist from the R&D Office, “Rubber asphalt” not only enables efficient waste management but also possesses other environmentally friendly properties. The technology of producing rubberized asphalt allows for the construction of modern road pavement that reduces the noise emitted by vehicular traffic, significantly improving driving comfort and reducing traffic noise, which is harmful to the environment.

During the construction of one kilometer of an asphalt road improved with rubber, 400 to 1200 end-of-life car tires can be disposed of. In addition to the environmental aspects, this solution also provides tangible benefits in terms of safety and comfort. The traction loss of tires on wet surfaces is reduced when vehicles travel on rubber-modified pavement. Sustainable asphalt requires less expensive maintenance, as it is more resistant to climatic conditions, including low temperatures, ages slower, and is less prone to cracking compared to conventional asphalt.

The researchers also analyzed the possibilities of reusing waste pavement, particularly focusing on asphalt pavement millings. In Poland, asphalt millings are primarily used to stabilize shoulders, build dirt roads, or construct the road base course. With a suitable additive, such material can be successfully utilized in creating new pavements.

More competitive

The method for producing asphalt mixtures reduces the emissions of harmful substances, minimizes the use of non-renewable resources, decreases fuel consumption, and improves working conditions for individuals involved in laying asphalt pavements.

The full-scale implementation of this invention has the potential to revolutionize the construction industry by providing sustainable and economical solutions for future infrastructure projects. Its introduction may enhance the competitive potential of Polish businesses in the international market.

Miłosz Magrzyk