Geology, geography and global energy
Scientific and Technical Journal
The study of physical and mechanical properties of local construction materials for building roadside (Lower Volga Region)
2016. №2, pp. 14-29
Badrudinova Amina N. - senior lecturer, Kalmyk state University named after B. B. Gorodovikov, 11 Pushkin st., Elista, Republic of Kalmykia, 358000, Russian Federation, Amina08-80@mail.ru
Sangadzhiev Mergen M. - c.sc. in geology and mineralogy, associate professor, Kalmyk state University named after B. B. Gorodovikov, 11 Pushkin st., Elista, Republic of Kalmykia, 358000, Russian Federation, Smm54724@yandex.ru
Erdniev Olda V. - c.sc. in geography, associate professor, Kalmyk state University named after B. B. Gorodovikov, 11 Pushkin st., Elista, Republic of Kalmykia, 358000, Russian Federation, oldver@mail.ru
Ledzhinov Vladimir S. - student, Kalmyk state University named after B. B. Gorodovikov, 11 Pushkin st., Elista, Republic of Kalmykia, 358000, Russian Federation, Led.revan@mail.ru
The article discusses the characteristics of physical and mechanical properties of local construction materials used to build the roadway. laboratory studies of gravel in the Volgograd region on Zimovsky, Lipinska fields were conducted. When the laboratory work was carried out the crushing of waste in loose form. Verify whether granulometric composition of crushed stone gravel-sand mixtures. On the base of conducted laboratory tests revealed the feasibility of using quarries for sealing road surfaces in loose form. Particularly on roads with high traffic intensity have been developed recommendations for strengthening shoulders with a coating of bituminous concrete or cement concrete. The results of the experiment were plotted ultimate strength in compression from the content of cationic bitumen emulsion and cement. According to the obtained parameters, conclusions were drawn that at minimum the content of cationic bitumen emulsion and cement, the mixture can be used in the Foundation strengthening of roadsides in warmer climatic zones. At the second stage it is recommended to use the possibility of the use of crushed stone screenings with addition of sand, cement and emulsion. In particular the investigated grain compositions for screening sand, cement. The actual requirements for cationic emulsions and the optimal selection of organic-mineral mixtures on physical and mechanical properties. The economic calculation of the feasibility of a sand-gravel mixture. The results of the study allowed us to identify the moduli of elasticity of local materials, wear of materials and the conditions of their exploitation on the strength characteristics taking into account the continuity of the layer. In the end, data were obtained on the selection of porous crushed stone for roads with traffic over 1,000 vehicles per day.
Key words: битумная эмульсия, водостойкость, гранулометрический состав, грунт, зерновой состав, каменные материалы, карьер, модуль упругости, песок, проба, расчет, ремонт дорог, смеси, строительство, физико-механические свойства, фракции, цемент, щебень, bitumen emu
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