THE PRODUCTION TECHNOLOGY OF SMA WITH OLD ASPHALT AND FIBARM FIBER

Abstract

At present, world practice has thousands of kilometers of roads built or restored using black-mastic mixtures, which indicates a gradual displacement of traditional types of asphalt concrete in the construction of protective and structural layers of road surfaces. At the same time, crushed stone-mastic asphalt concrete, as more durable and resistant to intensive climatic and transport impacts, has particularly proven itself on the most difficult sections of roads. In the process of monitoring the performance of coatings, unique statistical data were collected, the analysis of which allowed specialists not only to establish requirements for mixtures, but also to evaluate the actual performance properties of SMA in comparison with conventional asphalt concrete in terms of resistance to the formation of ruts and cracks, reduction of evenness, manufacturability and other factors.The article discusses the possibility of using recycled granules of old asphalt concrete in SMA, using reinforcing additives and anti-aging compositions for bitumen. The materials of the work of countries of the European Union and the United States over the past decade are given.