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The paper considers the use of crushed stone-mastic asphalt mixtures laid with a small thickness as protective layers of wear of roads. The General characteristics of mixtures and their components are given, the pros and cons, as well as the possibility of their application are given. As a mineral powder, it is recommended to use lime-containing waste (calcium oxide hydrate) of the chemical industry. The effective increase of shear resistance of the protective wear layer with the subsequent prevention of the formation of a track on the coating due to the use of lime-containing waste, which has a highly active structuring effect on bitumen with a slowdown in its aging in the asphalt binder, subject to the principles of sufficient water resistance and crack resistance of asphalt concrete. The replacement of mineral powder with lime-containing waste in the composition of crushed-mastic asphalt concrete with the same mass amount of other mineral components and bitumen indicates a significant increase in quality indicators.

transportnye sooruženiâ

Development of the composition of crushed stone and mastic asphalt with increased resistance to rutting for the device wear layer for roads with high traffic