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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.Evgeniy A. Vdovin, candidate of Engineering 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 Pavel E. Bulanov, candidate of Engineering 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 Viktor 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
Title of the articleImproving the characteristics of road soil-cement with organosilicon compounds
Abstract.It is known to use individual modifiers – water repellents from a number of organosilicon compounds to improve some technological and operational properties of soil-cement. However, systematic studies on the influence of the structure and volume of the aliphatic radical in organosilicon compounds on the efficiency of modification of road soil-cement have not been carried out. The relevance of the study is justified by the need to ensure the required level of strength and frost resistance of cement-soil layers of road pavements in road-climatic zones with seasonal and daily temperature changes, especially with frequent transitions through 0 °C. The purpose of the work is to analyze and study the effectiveness of the influence of organosilicon compounds, differing in the volume of aliphatic radical, on the physical and mechanical characteristics of road soil-cement. Results. It has been established that modification of soil-cement with potassium propyl and methyl siliconates provides an increase in the compressive strength in the range from 30 to 45 %, the tensile strength in bending from 28 to 40 %, and the freeze-thaw resistance coefficient from 64 to 88 % compared to unmodified compositions. It has been shown that at equal levels of strength parameters of modified soil-cement, the influence of potassium propyl siliconate contributes to a more significant increase in the level of frost resistance – by 10-20 %. Conclusions: The positive effect of modification with water repellents - organosilicon compounds containing an alkyl radical, differing in structure and volume - has been shown. It has been established that the highest level of freeze-thaw resistance and strength is provided when modified with organosilicon compounds containing propyl radical (C3H7). It has been revealed that with an increase in the volume of the radical of an organosilicon compound, it is possible to reduce the optimal content of the modifier in road soil-cement while increasing the characteristics of road pavement materials. This pattern is confirmed by the results of determining the optimal content of the studied modifiers, in which there is a 20% decrease in the amount of potassium propyl siliconate compared to potassium methyl siliconate for different compositions of soil-cement.
Keywords.soil-cement, structure of organosilicon compounds, strength, freeze-thaw resistance, road pavement
For citations:Vdovin E.A., Bulanov P.E., Stroganov V.F. Improving the characteristics of road soil-cement with organosilicon compounds // News KSUAE, 2023, № 4(66), p. 301-309, DOI: 10.52409/20731523_2023_4_301, EDN: JZUJND


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