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 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 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 Daniil R. Vybornov, 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: 0009-0006-5388-7698 |
| Title of the article | Resistance of strengthened soils to cyclic loads in road pavement structures |
| Abstract. | The relevance of this study is motivated by the lack of regulatory requirements for the resistance of structural layers of strengthened soil pavements to cyclic vehicle loads, either individually or in combination with weather and climate impacts. As a result, laboratory test data do not reflect the actual operating conditions of strengthened soils in pavements, which may be one of the reasons for unreliable service life predictions. It is known that, under repeated dynamic loading, the material can fail even at lower stresses than those observed in standard tests. Fatigue and relative deformation are recommended as the criteria determining behavior in such cases. Achieving the required fatigue and relative deformation indicators can be achieved by using a method of integrated modification of strengthened soils in the construction of pavement layers. The objective of this study is to improve the stability of strengthened clay soils under cyclic loads from vehicles and weather and climate impacts in road pavement structures. The objectives are to select compositions of complex-modified strengthened clay soils for road base layers in road climate zone III; to establish the dependence of changes in compressive strength and relative deformations of complex-modified strengthened soils in dry, wet, and freeze-thaw conditions on the number of cyclic load applications. Results. A pilot test setup was developed and a methodology for accounting for cyclic loads was improved. Dependences on the number of loading and freeze-thaw cycles for changes in compressive strength and relative deformations of strengthened soils were obtained. Conclusions. Increasing the resistance of strengthened soils to cyclic loads from vehicles and weather and climate impacts in road pavement structures will contribute to increasing their service life when using complex modification methods. |
| Keywords. | cyclic loads, strengthened soils, road pavement, fatigue coefficient, relative deformations, complex modification |
| For citations: | Vdovin E.A., Stroganov V.F., Bulanov P.E., Vybornov D.R. Resistance of strengthened soils to cyclic loads in road pavement structures // News of KSUAE, 2025, № 4 (74), p. 289- 302, DOI: 10.48612/NewsKSUAE/74.25, EDN: VXWLUB |
