Influence of asphalt granulate on asphalt concrete properties.

The paper is devoted to experimental research of asphalt granulate influence on asphalt concrete properties. Asphalt granulate is a product obtained during the milling of pavement layers at their replacement as part of the repair and maintenance works. Worldwide practice shows that asphalt granulate is increasingly being used as a product for their reuse. This makes it possible to avoid the costs of its disposal and, as a consequence, to achieve a reduction in the negative impact on the environment. The paper presents the results of experimental data obtained in the course of laboratory studies on the use of asphalt granulate after its crushing and sieving in asphalt concrete. The op-timum grain compositions of asphalt concrete mixtures were selected. The results of determining the physical and mechanical properties showed that the quantitative substitution of asphalt granulate allows reducing the content of mineral powder, as well as bitumen with the insertion of plasticizers without compromising the strength and defor-mation characteristics of asphalt concrete. [ABSTRACT FROM AUTHOR]