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Information × Registration Number 0224U033088, (0123U104767) , R & D reports Title Develop methodological recommendations for the calculation of road embankment bases on weak loess soils with compaction by the impact method popup.stage_title Розробити методичні рекомендації з розрахування основ насипів автомобільних доріг на слабких лесових ґрунтах з ущільненням ударним методом Head Hameliak Ihor P., д.т.н. Registration Date 17-12-2024 Organization National Transport University popup.description1 Development of a methodology for calculating the foundations of highway embankments on weak loess and loess-like alluvial soils with their compaction by the impact method, to reduce the consumption of material resources and time for the construction of foundations. popup.description2  The relevance of the research topic for the national economy of Ukraine lies in the need to increase the strength and reliability of highway foundations during construction in areas of silty loess and loess-like soils. Loess soils are distributed over 65-80% of the country's territory and quite often have thick layers. These soils are characterized by high initial porosity, low humidity, and a significant percentage of dust particles. The object of the study is the process of compacting the base of highway embankments on weak loess and loess-like silty soils by the impact method. The subject of the study is the influence of impact parameters (contact stress, specific impulse, specific impact energy) on the change in the modulus of deformation of loess soil. Research methods — analysis of literary sources, analysis of the interaction of the system "impactor - soil layer", experimental studies of the influence of contact stress, specific impulse, specific impact energy on the change in the modulus of deformation of loess soil, numerical modeling of impact compaction, data synthesis and conclusions. According to the results of the research, a full-scale study was conducted using the impact compaction method of highway embankment foundations with the determination of rational parameters and schemes of compaction and structures of reinforcement elements of weak loess and loess-like soils, including overmoistened ones, a model of impact compaction of loess based on the model of isotropic soil hardening was substantiated, a methodology for numerical calculation of impact compaction with multiple application of impact pulses was developed, an analysis of test data was conducted, and "Methodological recommendations for the calculation of highway foundations on weak loess and loess-like soils with compaction by the impact method" were developed. Implementation - when designing the foundations of public roads in Ukraine on weak loess and loess-like subsidence soils. Product Description popup.authors Antolyk Ya. M. Hameliak Ihor P. Hladun Serhii A. Dmytrychenko Andrii M. Dromenko Ivan O. Kots Ivan V. Oksen Yevhen I. Oksen Dmytro Ye. Raikovskyi Vitalii F. popup.nrat_date 2024-12-17 Close