Rheology of Soil-Concrete Mixtures Based on a Polymer-Organic Binder with a Mineral Modifier

Number of journal: 12-2022
Autors:

Sokolova Yu.V.,
Nelubova V.V.,
Ayzenshtadt A.M.,
Strokova V.V.

DOI: https://doi.org/10.31659/0585-430X-2022-809-12-26-32
УДК: 631.327

 

AbstractAbout AuthorsReferences
The development of the Arctic zone, characterized by unfavorable natural-climatic and engineering-geological conditions, which significantly complicate the development of this territory, in particular the modernization of transport infrastructure, is among the priorities of the state policy of Russia. One of the effective ways to construct a roadbed is to use base soils, reinforced or stabilized with binders and active additives, with the formation of a soil-concrete structure with specified physical and mechanical characteristics. Preliminary executed works substantiate the possibility of using a polymer-organic binder with a mineral modifier (organo-mineral stabilizer) as a complex hardener for clay soils. The studies were carried out on a model soil system obtained by mixing sand and saponite-containing material. The model soil system corresponded to the properties and composition of sandy loam. A complex consisting of glyoxal, carbide sludge and bark was used as an organo-mineral stabilizer. A hypothesis has been put forward about the mechanism of structure formation of the developed multicomponent soil concrete system based on a model soil, consisting in the physicochemical interaction of individual components of the system with a gradual transition from a plastic to a solid state and the formation of a periodic colloidal structure resistant to external temperature and humidity influences and having the rheological characteristics required in the initial period of manufacture. In this regard, the purpose of this work was to evaluate the structural and mechanical features of model systems with an organo-mineral stabilizer, namely, rheological parameters as informative and sensitive indicators of structural transformations of a colloidal system depending on its composition, as well as physical and mechanical properties. Rheotechnological parameters were determined using a rotary viscometer. To establish patterns of structure formation, the Herschel-Bulkley model was chosen as a rheological model. The results obtained showed that all the studied dispersed systems are characterized by a thixotropic flow type and have intermediate structural and mechanical properties close to Bingham solid systems. The regularities of the influence of individual components of the soil-concrete mixture on the rheological properties of the model clay soil have been established. It has been proven that a polymer-organic binder based on mechanically activated bark and glyoxal has a dominant effect on the processes of structure formation. At the same time, an increase in the content of an aqueous dispersion medium has practically no effect on the stability of these systems in the initial period: the structural strength of the coagulation contacts formed as a result of the physicochemical interaction of the active components of the system is ensured. It is shown that the strengthening of the model clay soil with an organo-mineral complex provides a two-fold decrease in the optimal moisture content of the system with the formation of soil concrete with a high margin of safety. Thus, as a result of a complex of studies, theoretical ideas about the structure formation of complex soil-concrete systems have been supplemented.
Yu.V. SOKOLOVA1, Engineer, Senior Lecturer (This email address is being protected from spambots. You need JavaScript enabled to view it.);
V.V. NELUBOVA2, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
A.M. AYZENSHTADT1, Doctor of Sciences (Chemistry) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
V.V. STROKOVA2, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)

1 Northern (Arctic) Federal University named after M.V. Lomonosov (17, Severnaya Dvina Embankment, Arkhangelsk, 163002, Russian Federation)
2 Belgorod State Technological University named after V.G. Shukhov (46, Kostukov Street, Belgorod, 308012, Russian Federation)

1. Ivashchenko Yu.G., Mameshov R.T., Eminov R.N., Magomedov Sh.M. Structuration of building composite materials based on local raw materials by modifying polyfunctional assignment additives. Tekhnicheskoe regulirovanie v transportnom stroitel’stve. 2019. No. 6 (39), pp. 306–311. (In Russian).
2. Kosenko S.A., Kotova I.A., Akimov S.S. Feasibility studies of protective sub-ballast soil-cement layers at heavy-train traffic. Vestnik of the Tomsk State University of Architecture and Civil Engineering. 2021. Vol. 23. No. 1, pp. 161–174. (In Russian). DOI: 10.31675/1607-1859-2021-23-1-161-174
3. Pichugin A.P., Chesnokov R.A., Tamarova V.S., Pivkina A.D. Strengthening of road soil bases with mineral binders with dispersed additives. Dal’nii Vostok: problemy razvitiya arkhitekturno-stroitel’nogo kompleksa. 2021. Vol. 1. No. 1, pp. 178–183. (In Russian).
4. Romanenko I.I., Petrovnina I.N., Pint E.M., Sharipkov A.D. Features of the technology of building a road base. Dnevnik nauki. 2020. No. 2 (38), pp. 12. (In Russian).
5. Dolev A.A., Alekseev V.A., Bazhenova O.Yu. Selection of concrete formulations for the creation of soil-cement piles in difficult engineering and geological conditions. Stroitel’stvo i rekonstruktsiya. 2022. No. 1 (99), pp. 110–119. (In Russian). DOI: 10.33979/2073-7416-2022-99-1-110-119
6. Sokolova Yu.V., Ayzenshtadt A.M. Evaluation of dispersion interaction in aluminum silicate system under the influence of organic additive. Fizika i khimiya obrabotki materialov. 2017. No. 4, pp. 83–88. (In Russian).
7. Sokolova Yu.V., Aizenshtadt A.M., Korolev E.V., Chibisov A.A. Evaluation of the influence of prescription factors on the structure formation of polymer-organic binder. Stroitel’nye Materialy [Construction Materials]. 2020. No. 9, pp. 27–36. (In Russian). DOI: 10.31659/0585-430X-2020-784-9-27-36
8. Inzhenernaya geologiya Rossii. T. 1. Grunty Rossii. Pod. red. V.T. Trofimova, E.A. Voznesenskogo, V.A. Koroleva [Engineering geology of Russia. Vol. 1. Soils of Russia. Edited by V.T. Trofimov, E.A. Voznesenskii, V.A. Korolev]. Moscow: KDU. 2011. 672 p.
9. Nelyubova V.V., Usikov S.A., Strokova V.V., Netsvet D.D. Composition and properties of self-compacting concrete using a complex of modifiers. Stroitel’nye Materialy [Construction Materials]. 2021. No. 12, pp. 48–54. (In Russian). DOI: 10.31659/0585-430X-2021-798-12-48-54
10. Ni H., Huang Y. Rheological study on influence of mineral composition on viscoelastic properties of clay. Applied Clay Science. 2020. Vol. 187, pp. 105493. DOI: 10.1016/j.clay.2020.105493
11. Morariu S., Teodorescu M., Bercea M. Rheological investigation of polymer/clay dispersions as potential drilling fluids. Journal of Petroleum Science and Engineering. 2022. Vol. 210, pp. 110015. DOI: https://doi.org/10.1016/j.petrol.2021.110015
12. Lin Y., Qin H., Guo J., Chen J. Rheology of bentonite dispersions: Role of ionic strength and solid content. Applied Clay Science. 2021. Vol. 214, pp. 106275. DOI: https://doi.org/10.1016/j.clay.2021.106275
13. Shakeel A., Kirichek A., Chassagne C. Rheology and yielding transitions in mixed kaolinite/bentonite suspensions. Applied Clay Science. 2021. Vol. 211. pp. 106206. DOI: https://doi.org/10.1016/j.clay.2021.106206
14. Tsugawa J.K., de Oliveira Romano R.C., Pileggi R.G., Boscov M.E.G. Review: Rheology concepts applied to geotechnical engineering. Applied Rheology. 2019. No. 29(1), pp. 202–221. DOI: https://doi.org/10.1515/arh-2019-0018
15. Deng S., Kang C., Bayat A., Barr K., Trovato C. Rheological properties of clay-based drilling fluids and evaluation of their hole-cleaning performances in horizontal directional drilling. Journal of Pipeline Systems Engineering and Practice. 2020. No. 11 (3), pp. 04020031. DOI: 10.1061/(ASCE)PS.1949-1204.0000475

For citation: Sokolova Yu.V., Nelubova V.V., Ayzenshtadt A.M., Strokova V.V. Rheology of soil-concrete mixtures based on a polymer-organic binder with a mineral modifier. Stroitel’nye Materialy [Construction Materials]. 2022. No. 12, pp. 26–32. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2022-809-12-26-32


Print   Email