INTENSITY ANALYSIS OF RUTTING IN VARIOUS TYPES OF ASPHALT CONCRETE

Highways are one of the important infrastructure components that characterize the development level of regions and the state. In this regard issues related to ensuring the operability of existing and newly built roads become very relevant. One of the serious problems in solving this issue is premature wear of the pavement upper layers which is formed mainly under the influence of abrasive effects of automobile tires equipped with studs. This problem is especially relevant in the climatic realities of our country. Analysis of the causes of wear track formation allowed us to establish that an important factor is the material’s characteristics in the asphalt concrete composition. The article presents the tests results of different types of asphalt concrete made using crushed stone from various rocks for abrasion. The results obtained allow us to conclude that the result of asphalt concrete abrasion is influenced not only by the type of rock from which the crushed stone is made but also by its size. The best results of abrasion were obtained for asphalt concrete of the stone mastic asphalt SMA-22 containing crushed stone of fraction 16-22.4 mm from the quarry "Gora Zmeevaya", fraction 8–16 mm, fraction 4–8 mm from the Bazhenovskoye deposit, crushed sand from the Chernorechenskoye deposit, mineral powder of the grade MP-2 and modified bitumen.