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. | Evgeny A. Vdovin, candidate of technical sciences, assistant 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 Nikita V. Konovalov, senior lecturer, 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: 0000-0001-6091-4355 |
| Title of the article | Application of complex modification in soil stabilization technology |
| Abstract. | The use of stabilization cement-soil in the construction of road pavements of various categories of highways is an actual vector of development of resource-saving direction in the road industry, as well as a technology that contributes to increasing the load-bearing capacity and inter-repair periods of road pavements. The analysis of literature and industrial experience shows that in most cases, when reinforcing soils with binders, an additional technological stage of complex modification is required in order to provide increased indicators of such properties as frost resistance, compressive and bending strength. These properties indirectly reflect the degree of durability of the material and the structural layer as a whole. The purpose of the work is to analyze the results of technical indicators of properties during the construction and operation of road sections of highway pavements with the use of cement-soil, complex-modified with activated fillers. The objectives of the study are to evaluate the effect of complex modification on the physical and mechanical parameters of cement-soil and operational characteristics of the highway, obtained as a result of long-term monitoring of its condition. The paper presents the main stages and technological operations of the device of road base layers made of complex-modified cement-soil, the results of determining the strength of samples taken from the structure, as well as the operational characteristics of the highway - modulus of elasticity and rutting. The obtained data confirm the effectiveness of complex modification application, which can be considered as a necessary stage in the development of soil reinforcement technology in road construction to increase the bearing capacity and service life of roadways. It has been established that the rut depth on the sections of pavements constructed with the application of the technology of complex modification of bases based on the use of activated fillers is reduced by 40%, the value of elastic modulus is increased by 9.1%, the compression and flexural tensile strength limits of cement-soil layers are increased to 26.7% and 73.5%, respectively, in comparison with the sections on unmodified reinforced soils. The significance of the obtained results for the construction industry is to confirm the effectiveness of complex modification of reinforced soils on the basis of activated fillers, as well as to establish the possibility of increasing the inter-repair periods of roadways, expanding the area of statistical data of operational indicators of roadways with bases made of cement-soil. |
| Keywords. | pavement, complex modification, cement-soil, activated filler, condition monitoring, elastic modulus, rut depth, durability |
| For citations: | Vdovin E.A., Konovalov N.V. Application of complex modification in soil stabilization technology// News of KSUAE, 2024, № 3(69), p. 46-57, DOI: 10.48612/NewsKSUAE/69.5, EDN: FPWIJI |
