AbstractAbout AuthorsReferences
It is revealed that the thermolysis of cement hydrosilicates of tobermorite series modified with sucrose is accompanied by the destruction of tobermorite structures and the formation of silicate particles with a wide range of sizes. Curves of the distribution of particles in micron, submicron and nano-ranges have been determined by the methods of dynamic light scat- tering and direct measurement of particle sizes. It is also discovered that the type of particle distribution curve depends on the content of modifying carbohydrate and is of non-mono- tonic character. This is presumably due to the effect of differently directed factors: enhancement of coagulation effects and growth of defectiveness of tobermorite structures. The ther- molysis of modified cement hydrosilicates is accompanied by the effect of occlusion of carbohydrate in the silicate matrix and the formation of water-insoluble compounds. This makes it possible to consider the products of thermolysis of modified hydrosilicates as efficient fillers for cement concretes, including high-strength concretes.
E.A. SHOSHIN, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
Yuri Gagarin State Technical University of Saratov (77, Polytechnicheskaya Street, Saratov, 410054, Russian Federation)
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2. Chiorino M.A., Falikman V.R. Durability and sustainable development of constructional concrete in sight of the world scientific community. Promyshlennoe i grazhdanskoe stroitel’stvo. 2016. No. 1, pp. 24–26. (In Russian).
3. Kalashnikov V.I., Tarakanov O.V., Kuznetsov Yu.S., Volodin V.M., Belyakova E.A. New generation concrete on the basis of thinly crushed mineral mixes. Inzhenerno- stroitel’nyy zhurnal. 2012. No. 8, pp. 47–53. (In Russian).
4. Kalashnikov V.I. Perspectives of the use of reaction- powder dry concrete mixes in construction. Stroitel’nye Materialy. 2009. No. 7, pp. 59–61. (In Russian).
5. Taranova A.V., Borisova N.I., Borisov A.V. To a question of development of ecological building in the Volgograd region in new economic conditions. Ekonomika stroitel’stva. 2016. No. 3, pp. 66–74. (In Russian).
6. Kalashnikov V.I., Moskvin R.N., Belyakova E.A., Belyakova V.S., Petukhov A.V. High-disperse fillers for the powder activated concrete of new generation. Sistemy. Metody. Tekhnologii. 2014. No. 2 (22), pp. 113–118. (In Russian).
7. Falikman V.R. About use of nanotechnologies and nanomaterials in construction. Nanotekhnologii v stroitel’stve: nauchnyy Internet-zhurnal. 2009. No. 1, pp. 24–34. http://www.nanobuild.ru/magazine/nb/ Nanobuild_1_2009.pdf. (In Russian).
8. Falikman V.R. About use of nanotechnologies and nanomaterials in construction. Nanotekhnologii v stroitel’stve: nauchnyy Internet-zhurnal. 2009. No. 1, pp. 10–20. http://www.nanobuild.ru/magazine/nb/ Nanobuild_2_2009.pdf. (In Russian).
9. Liu Xiaoyan, Chen Lei, Liu Aihua, Wang Xinrui. Effect of nano-CaCO3 on properties of cement. Energy Procedia. 2012. Vol. 16. Part B, pp. 991–996.
10. Abdoli Yazdi N., Arefi M.R., Mollaahmadi E., Abdollahi Nejand B. To study the effect of adding Fe2O3 nanoparticles on the morphology properties and microstructure cement mortar. Life Science Journal. 2011. No. 8(4), pp. 550–554.
11. Nazari A., Riahi S. Effects of CuO nanoparticles on compressive strength of self-compacting concrete. Sadhana. 2011. Vol. 36. Part 3, pp. 371–391. doi: 10.1007/s12046-011-0023-7.
12. Kalashnikov V.I., Tarakanov O.V., Moskvin R.N., Moroz M.N., Belyakova E.A., Belyakova V.S., Spirido- nov R.I. Use of water suspensions natural the puzzolani- cheskikh of additives in production of concrete. Sistemy. Metody. Tekhnologii. 2013. No. 1 (17), pp. 103–107. (In Russian).
13. Shoshin E.A., Timokhin D.K., Obychev D.O. Formation of a nanophase of a portlandtsement on early terms of curing in presence of bioses. Nauchnoe obozrenie. 2015. No. 4, pp. 159–168. (In Russian).
14. Bonaccorsi E., Merlino S., Kampf A.R. The crystal structure of tobermorite 14 A (Plombierite), a C–S–H phase. Journal of the American Ceramic Society. 2005. Vol.88. Iss. 3, pp. 505– 512. doi: 10.1111/j.1551-2916.2005.00116.x.
15. Smith B.J., Rawal A., Funkhouser G.P., Roberts L.R., Gupta V., Israelachvili J.N., Chmelka B.F. Origins of saccharide- dependent hydration at aluminate, silicate, and aluminosilicate surfaces. Proc Natl Acad Sci USA. 2011. Vol. 108. No. 22, pp. 8949–8954. doi: 10.1073/pnas.1104526108.
16. Shoshin E.A. Nanomodified silicate - calcium mineral additives of construction appointment. BST. 2016. No. 12, pp. 53–56. (In Russian).
For citation: Shoshin E.A. Silicate filler obtained by the method of thermolysis of modified cement hydrosilicates. Stroitel’nye Materialy [Construction Materials]. 2017. No. 7, pp. 16–19. DOI: https://doi.org/10.31659/0585-430X-2017-750-7-16-19. (In Russian).