The National Transport University Bulletin

Abstract

The article investigates asphalt mixtures made according to standard technology and the so-called warm asphalt mixtures made at reduced process temperatures based on bitumen with the addition of energy-saving additives and RAP (reclaimed asphalt mixture). The purpose of the study is to investigate the feasibility of using asphalt mixtures made at low process temperatures on the basis of bitumen with the addition of energy-saving additives and RAP. Taking into account the trends of the modern world, the issue of rational use of energy resources arises. In the context of an increase in road works scopes, one of the pressing issues that arise in the preparation of asphalt mixtures is the reduction of energy costs for its production. Research method. Experimental comparative studies of the cost of preparing traditional hot asphalt mixtures and asphalt mixtures made at reduced process temperatures based on bitumen with the addition of energy-saving additives and RAP were carried out. Results. A technical and economic comparison of the cost of preparing hot and warm asphalt mixtures was carried out and the results of the cost estimation of the preparation of asphalt mixtures using different technologies were obtained. Based on the analysis of the results obtained, it was found that when comparing the technologies of hot asphalt mixtures and technologies of warm asphalt mixtures preparation, preference should be given to the technologies of the so-called warm asphalt mixtures, since we have a decrease in energy consumption and added components and, as a result, a decrease in the cost of preparing asphalt mixtures without deterioration of physical and mechanical properties.

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