About the authors
| First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address. | Evgeniy A. Vdovin, 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 , ORCID: 0000-0002-0649-4342 Pavel E. Bulanov, 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 , ORCID: 0000-0002-0149-8854 Victor F. Stroganov, doctor of chemical 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 , ORCID: 0000-0001-9680-6698 Vybornov Daniil Romanovich, engineer, 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 article | The effect of complex modification on the design characteristics of layers road pavements from strengthened soils |
| Abstract. | Problem statement One of the relevant areas for improving the technical and economic efficiency of strengthened soil technology in road construction is the application of the integrated modification method. However, for the design of road pavements, there is insufficient data on systematic scientific and practical results on the effect of complex modification on the levels of design characteristics of road clothes layers constructed using strengthened soil technology, the physical, mechanical and operational characteristics of which exceed these indicators for layers without modification. The aim of the work is to study the effect of complex modification on the design characteristics of soil-cement layers of road pavements and design variants of road clothing structures with layers of complex modified soil-cement. In the course of the research, the following tasks were solved: to comprehensively modify soils strengthened with Portland cement and optimize their compositions for layers of road pavements; to establish the effect of complex modification on the calculated characteristics of layers of road pavements made of cement grunt; to design variants of road pavements structures with layers of complexly modified soil-cement. Results. It was found that the complex modification of modified soil-cement based on organosilicon hydrophobizer, polycarboxylate plasticizer and electrolyte increased the compressive strength by 2.6 times, the coefficient of frost resistance after 15 cycles of alternating freezing and thawing by 2.1 times, as well as the calculated characteristics of the layers of road clothing: flexural tensile strength by 2.8 times, modulus of elasticity by 62%, volume density by 2% and thermal conductivity coefficient by 3%. The increased characteristics make it possible to increase the grades of materials, as well as reduce the cement content in strengthened soils. The results obtained by the levels of design characteristics provided the possibility of designing road surface structures with layers of complex modified soil-cement. The use of a complex modification makes it possible to reduce the thickness of the layers while maintaining increased technical, operational characteristics and durability of road pavements. Conclusions. The significance of the study for the road construction industry is to obtain the values of the calculated characteristics of the layers of road pavements from complex modified soil-cement, providing the possibility of designing structures of road pavements with increased performance and durability, increasing the technical and economic efficiency of road construction. |
| Keywords. | strengthened soils, soil-cement, complex modification, design characteristics, road pavements, designing |
| For citations: | Vdovin E.A., Bulanov P.E., Stroganov V.F., Vybornov D.R. The effect of complex modification on the design characteristics of layers road pavements from strengthened soils // News of KSUAE, 2024, № 4(70), с. 315-326, DOI: 10.48612/NewsKSUAE/70.28, EDN: WXMKOG |
