AbstractAbout AuthorsReferences
The most popular way to improve the construction and technical characteristics of binders and materials based on calcium sulfate is their modification through the use of mineral additives. Of particular interest among structure modifiers are the so-called mechanocomposites, which are formed as a result of intensive mechanical processing of a mixture of mineral components. mechanocomposites are metastable structures with a high density of interfacial boundaries between the initial components, which provides a very high concentration of defects on surfaces and in near-surface layers. When crushing a mixture of anhydrite and aluminous slag in a centrifugal impact mill, a mechanocomposite was obtained, which is a CaSO4–CaO–Al2O3 system and consists of calcium aluminates and sulfoaluminates. This mechanocomposite is used to activate the process of hardening of the anhydrite binder due to the formation of calcium and aluminum hydroxides and calcium hydroaluminates during its hydration. In a binder system with a mechanocomposite, crystallization of gypsum dihydrate occurs by the mechanism of oriented coalescence of particles with the formation of dendrites, which are characterized by a clear mutual crystallographic orientation of the branches. This contributes to the growth of the strength of anhydrite stone.
M.S. GARKAVI1, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
A.V. ARTAMONOV1, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
E.V. KOLODEZHNAYA2, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
S.A. DERGUNOV3, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
S.V. SERIKOV3, Engineer (This email address is being protected from spambots. You need JavaScript enabled to view it.)
A.V. ARTAMONOV1, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
E.V. KOLODEZHNAYA2, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
S.A. DERGUNOV3, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
S.V. SERIKOV3, Engineer (This email address is being protected from spambots. You need JavaScript enabled to view it.)
1 Ural-Omega ZAO (89, bldg. 7, Lenina Avenue, Magnitogorsk, 455037, Russian Federation)
2 Institute for the Problems of Integrated Development of Mineral Resources of the Russian Academy of Sciences (4, Kryukovsky Tupik, Moscow, 111020, Russian Federation)
3 Orenburg State University (13, Prospect Pobedy, Orenburg, 460018, Russian Federation)
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22. Ivanov V.K., Fedorov P.P., Baranchikov A.E., Osiko V.V. Oriented splicing of particles: 100 years of research on the non-classical mechanism of crystal growth. Uspekhi khimii. 2014. Vol. 83. No. 12, pp. 1204–1222.
2. Gordina A.F., Polyanskikh I.S., Tokarev Yu.V., Buryanov A.F., Senkov S.A. Water-resistant gypsum materials modified with cement, microsilica and nanostructures. Stroitel’nye Materialy [Construction Materials]. 2014. No. 6, pp. 35–37. (In Russian).
3. Petropavlovskaya V.B., Belov V.V., Novichenkova T.B. Maloenergoemkie gipsovye stroitel’nye kompozity: Monografiya [Low-energy gypsum building composites: Monograph]. Tver: TVGTU. 2014. 136 p.
4. Yakovlev G.I., Plekhanova T.A., Makarova I.S., Maeva I.S., Buryanov A.F., Fisher H.B. Porous anhydrite compositions modified with carbon nano-structures. Tekhnologii betonov. 2007. No. 6, pp. 20–22. (In Russian).
5. Ancharov A.I. et al. Mechanocomposites as precursors for creating materials with new properties. Novosibirsk: Publishing house of SO RAN, 2010. 424 p.
6. Smolyakov V.K., Lapshin O.V. Makroskopicheskaya kinetika mekhanokhimicheskogo sinteza: Monografiya [Macroscopic kinetics of mechanochemical synthesis: Monograph]. Tomsk: Publishing House of the Institute of Atmospheric Optics SB RAS, 2011. 192 p.
7. Lapshin O.V., Smolyakov V.K. Dynamics of structural transformations during grinding of a binary mixture. Physical mesomechanics. 2011. Vol. 14. No. 2, pp. 77–84. (In Russian).
8. Lapshin O.V., Smolyakov V.K. Formation of a layered structure of mechanocomposites during grinding of a binary mixture. Khimicheskaya fizika i mezoskopiya. 2013. Vol. 15. No. 2, pp. 278–284. (In Russian).
9. Uvarov N.F., Boldyrev V.V. Size effects in the chemistry of heterogeneous systems. Uspekhi khimii. 2001. Vol. 70. No. 4, pp. 307–329. (In Russian).
10. Buryanov A.F., Fisher H.-B., Gal’tseva N.A., Buldyzhova E.N. Investigation of the role of potassium sulfate in the design of a hardening activator. Stroitel’nye Materialy [Construction Materials]. 2021. No. 8, pp. 34–38. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2021-794-8-34-38
11. Klimenko V.G., Pogorelova A.S. Multiphase gypsum systems for dry mixes based on natural gypsum. Vestnik BSTU named after V.G. Shukhov. 2005. No. 9, pp. 108–111. (In Russian).
12. Drebezgova M.Yu., Chernyshova N.V., Shatalova S.V. Composite gypsum binder with multicomponent mineral additives of different genesis. Vestnik BSTU named after V.G. Shukhov. 2017. No. 10, pp. 27–34. (In Russian).
13. Tokarev Yu.V., Yakovlev G.I. Modification of anhydrite compositions with aluminum-containing ultrafine additives. Izvestiya KazGASU. 2009. No. 1 (11), pp. 302–308. (In Russian).
14. Budnikov P.P., Zorin S.P. Angidritovyi tsement [Anhydrite cement]. Moscow: Promstroyizdat, 1954. 90 p.
15. Garkavi M.S., Vorobyov V.V., Kushka V.N., Svitov V.S. Modern equipment for grinding and classifying materials. Vestnik BSTU named after V.G. Shukhov. 2003. No. 6, pp. 280–284.
16. Khripacheva I.S., Garkavi M.S., Artamonova A.V., Voronin K.M., Artamonova A.V. Cements of centrifugal-impact grinding. Cement I ego primenenie. 2013. No. 4, pp. 106–109. (In Russian).
17. Khripacheva I.S., Garkavi M.S. Mixed cements of centrifugal-impact grinding based on blast-furnace waste slag. Stroitel’nye Materialy [Construction Materials]. 2010. No. 8, pp. 40–41. (In Russian).
18. Garkavi M.S., Dergunov S.A., Serikov S.V. Formation of the structure of composite cement in the grinding process. Stroitel’nye Materialy [Construction Materials]. 2021. No. 10, pp. 65–68. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2021-796-10-65-68
19. Garkavi M.S., Artamonov A.V., Stavtseva A.V., Kolodezhnaya E.V., Dergunov S.A., Serikov S.V. Modeling of structural transformations when grinding composite cement. Stroitel’nye Materialy [Construction Materials]. 2021. No. 11, pp. 41–46. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2021-797-11-41-46
20. Kuznetsova T.V., Sychev M.M., Osokin A.P. and others. Special cements: Textbook for universities. St. Petersburg: Stroyizdat, 1997. 314 p.
21. Garkavi M.S., Artamonov A.V., Kolodezhnaya E.V., Buryanov A.F. Composite anhydrite-slag binder for centrifugal impact grinding. Stroitel’nye Materialy [Construction Materials]. 2014. No. 7, pp. 16–18.
22. Ivanov V.K., Fedorov P.P., Baranchikov A.E., Osiko V.V. Oriented splicing of particles: 100 years of research on the non-classical mechanism of crystal growth. Uspekhi khimii. 2014. Vol. 83. No. 12, pp. 1204–1222.
For citation: Garkavi M.S., Artamonov A.V., Kolodezhnaya E.V., Dergunov S.A., Serikov S.V. Mechanocomposites based on anhydrite: properties and applications. Stroitel’nye Materialy [Construction Materials]. 2022. No. 8, pp. 41–45. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2022-805-8-41-45