New issues - Известия Казанского государственного архитектурно-строительного университета.

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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.Aleksey Y. Fomin candidate of technical sciences, associate professor, Kazan State University of Architecture and Engineering, Kazan, Russian Federation E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Rushaniya N. Askarova, postgraduate student, Kazan National Research Technological University, Kazan, Russian Federation E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Vadim G. Khozin, PhD in technical sciences, professor, Kazan State University of Architecture and Engineering, Kazan, Russian Federation E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Title of the articleHigh-strength crushed stone from carbonate rocks for the arrangement of bases in road pavement structures.
Abstract.the absence of quarries of high-strength stone materials in most of the European part of Russia, including in the Republic of Tatarstan, determines the search and application of materials, which are alternative in terms of properties. In addition, transportation costs for delivering crushed stone from solid rocks by rail, mainly from the territory of the Urals, for road construction purposes, reach 30-50% of the cost of crushed stone. Therefore, an effective alternative solution is the technological processing of crushed stone from low-strength rocks with sulfur melt, which leads to the production of a new material - high-strength crushed stone (sulfur stone). It can be said that earlier, sulfur waste was widely used to produce asphalt concrete mixtures, in this study it is proposed to strengthen the aggregate itself, i.e. carbonate crushed stone of local origin. The purpose of the study is to develop and study the properties of high-strength crushed stone from carbonate rocks obtained by impregnating it with sulfur melt. The main results of the study consist in achieving the required technical properties of carbonate crushed stone treated with sulfur: a decrease in water absorption (2-16 times), the volume of capillary porosity (7-11 times), an increase in hydrophobicity, water resistance, grade crushing (2-2.5 times), abrasion and frost resistance. The significance of the results obtained for the road construction industry consists in ensuring the design technical characteristics and durability of the bases of road pavement structures, using carbonate crushed stone treated with sulfur, while reducing their cost.
Keywords.building materials, highway base, crushed stone, sulfur, impregnation, strengthening, sulfur stone.
For citations:Fomin A.Y., Askarova R.N., Khozin V.G. High-strength crushed stone from carbonate rocks for the arrangement of bases in road pavement structures//News KSUAE 2022 № 1(59). С 54-63. DOI: 10.52409/20731523_2022_1_54


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