The effect of recycled automobile tires in the construction of asphalt roads

Abstract

The service life of asphalt concrete coatings of highways is determined not only by the technological aspects of the direct preparation and laying of asphalt concrete, but also by the properties of its components, especially the quality of the viscous material. Viscous substances based on oxidized oil bitumen, which are used everywhere in practice, do not provide the necessary performance and strength of the asphalt coating. This is due to the physicochemical characteristics that are included in the chemical nature of the bitumen material. A number of authors have shown that the unsatisfactory characteristics of bitumen of the BND brand in accordance with GOST 22245-90 lead to a decrease in the strength of asphalt concrete coatings by 40-50% in comparison with the requirements of standards.

It is known that expensive oil components are used for the construction of roads, which further increases the cost of production of tar and bitumen used in the manufacture of road surfaces. The ideas of improving the quality of the road surface and reducing the costs of construction, repair, maintenance of roads constantly excite the minds of scientists who have come up with new ways to improve the physical and mechanical properties of bitumen.

At the same time, we know that there is a problem with the disposal of solid petroleum products. This is especially true of the rubber from which car tires are made. Every year in the world, millions of tons of worn out car tires are thrown into landfills, which are then buried or burned, polluted and cause irreparable harm to the environment.

A large amount of this waste is a constant source of increased fire hazard. In addition, the chances of developing epidemiological diseases increase: insects and rodents are grown in the rows of tires. In natural conditions, tires decompose for at least 100 years, releasing various chemicals.