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First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address.Alexey A. Ignatyev, Head of the Department of Industry Education Development, FAI "ROSDORNII", Moscow, Russian Federation. Associate Professor, Yaroslavl State Technical University, Yaroslavl, Russian Federation. Email: Ignatievaa@
Title of the articleAdditives in asphalt concrete. Literature review
Abstract.Statement of the problem. Recently a lot of attention has been paid to the problems of improving asphalt concrete. This is due to the need to extend the service life of asphalt concrete pavement in conditions of constant growth in traffic loads, intensity of traffic and climatic factors as well as the need to extend the functional properties of the pavement. The purpose of the study is to determine the prospects of development and directions of improvement of asphalt concretes. The aims of the research are to analyse the works of domestic and foreign researchers aimed at examining the characteristics of asphalt concrete by introducing additives and new components into asphalt concrete mixture and identify the directions of asphalt concrete development. Results. During the research review, four main vectors of asphalt concrete development were identified. The first one is aimed at the introduction of additives able to provide self-healing of pavement microcracks when microwave exposure is used. The second vector is more promising and can rather be attributed to the concept of "smart" materials, where the input additives provide an opportunity for asphalt concrete pavement to use technologies widely used for intelligent transport systems due to the electrical conductivity of the mixture. The third vector is related to the search for options to replace the main binder (bitumen) with other types of binders or to evaluate the possibility of using combinations of binders, such as cement and bitumen simultaneously. The fourth vector is aimed at evaluating the additives introduced directly into the asphalt concrete mixture itself in the form of various fibers, both of natural origin and artificially obtained. The range of applied fibers is very diverse and the works devoted to these researches are quite numerous. Conclusions. The results of the researches allow establishing modern tendencies in the development of asphalt concrete coatings and estimating perspective additives in asphalt concrete which provide increase in operational characteristics and formation of new demanded properties of coatings that gives the grounds for further researches.
Keywords.asphalt concrete; composite road materials; directions of asphalt concrete development; pavement; additives in asphalt concrete.
For citations:Ignatyev A.A. Development prospects and directions of asphalt concrete improvement // News KSUAE 2023 № 1 (63), p. 14-30, DOI: 10.52409/20731523_2023_1_14, EDN: EXDWYX

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