Abstract
The present article investigates the resistance of asphalt concrete to atmospheric corrosion. It is known that the most intense destruction of asphalt concrete surface occurs in the autumn-spring period, that is, during prolonged wetting with freeze-thaw temperature fluctuations. The presence of water in the pores of asphalt concrete leads to a weakening of structural bonds at the “cement-mineral material” phase interface. Consequently, various defects, such as crack network, corrugations, and potholes, begin to appear on the surface. Therefore, asphalt concrete must have high resistance to atmospheric corrosion in the upper layers of the pavement. The key indicators of the corrosion resistance of asphalt concrete are indicators of long-term water saturation of asphalt concrete samples and their frost resistance. It has been found that asphalt concrete containing mineral powders from natural zeolite and brown coal has increased corrosion resistance compared to traditional asphalt concrete.
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