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  • Determination of the effectiveness of the influence of various adhesive additives on the performance characteristics of asphalt concrete properties

    The article discusses the effect of adhesive additives on the performance properties of asphalt concrete. The authors give a comprehensive overview of the problem of durability of asphalt concrete layers, in particular in the autumn-spring period, emphasizing the importance of this issue for traffic safety. Then they discuss the role of adhesive additives in improving the performance of asphalt concrete by improving its physical and mechanical properties. The authors selected a number of adhesive additives, and also carried out the selection of asphalt concrete mixture according to the methodology of volumetric and functional design. The article contains a detailed description of the method for determining water resistance and adhesive properties. The authors also consider the effect of adhesive additives on the fatigue life of asphalt concrete. The text of the article provides a detailed description of the method for determining fatigue strength during repeated bending. In conclusion, the article emphasizes the importance of using adhesive additives to improve the performance and durability of asphalt concrete. The authors emphasize the importance of the study for extending the service life of asphalt concrete layers and increasing their repair time.

    Keywords: bitumen, adhesive additive, low temperature property, water resistance, fatigue properties, composition selection, volumetric and functional design, durability, road, asphalt concrete, testing

  • The effect of surfactants on the low-temperature properties of road bitumen

    The influence of surfactants, in particular adhesive and reducing additives, on the low-temperature and rheological properties of road bitumen is considered. Tests of the low-temperature properties of road bitumen with and without the use of appropriate additives were carried out, followed by a comparison of the results. Also, in order to assess the effect of the above surfactants on the ability of road bitumen to retain its properties over time, a comparative analysis of bitumen samples subjected to the aging process was carried out. In general, the results of this study indicate that the use of surfactants can lead to an increase in the durability of road bitumen, even at low temperatures.

    Keywords: bitumen, surfactant, additive, low-temperature property, durability, road, asphalt concrete, rheology, aging process, testing

  • Assessment of the quality of work on the construction of the upper layers of the road surface is not a destructive method

    The assessment of the quality of the production of works on the construction of the upper layers of the road cover by the destructive and non-destructive method is considered, both methods are compared by searching for the main advantages and disadvantages. The order and the scheme of the production of each of the estimates are described.

    Keywords: motor roads, quality assessment, road facilities, gamma density meters, electromagnetic (dielectric) densitometers, radioisotope densitometers, densitometer