AbstractAbout AuthorsReferences
Products of Portland cement hydration, modified by a significant amount (2%) of sucrose and subjected to thermolysis, are studied. As a result of thermolysis, a mineral dispersion, particles of which include sucrose, is formed. An attempt is made to assess the degree of sucrose immobilization in the composition of the mineral dispersion obtained. The degree of sucrose immobilization is assessed by its content in water extracts of the mineral dispersion. It is found that the degree of sucrose immobilization is over 98%. On the basis of data of the X-ray phase analysis, element analysis of individual nano-particles before and after the thermolysis of modified products of cement hydration, the character of the structure of mineral dispersion particles and modified products of hydration is defined; a model of sucrose occlusion by mineral dispersion particles is proposed.
E.A. SHOSHIN1 , Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
I.L. KAZANTSEVA2 , Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
I.L. KAZANTSEVA2 , Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
1 Yuri Gagarin State Technical University of Saratov (77, Polytechnicheskaya Street, Saratov, 410054, Russian Federation)
2 Saratov Laboratory forensic examination of the Ministry of Justice of the Russian Federation Federal Budgetary Institution (10, Kutyakova Street, Saratov, 410003, Russian Federation)
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3. Bazid Khan, Bulent Baradan. The effect of sugar on setting-time of various types of cements. Quarterly science vision. 2002. Vol. 8 (1), pp. 71–78.
4. Camille Nalet, André Nonat. Ionic complexation and adsorption of small organic molecules on calcium silicate hydrate: Relation with their retarding effect on the hydration of C3S. Cement and Concrete Research. 2016. Vol. 89, pp. 97–108.
5. Science and technology of concrete admixtures. Edited by Pierre-Claude Aïtcin and Robert J Flatt. Woodhead Publishing. 2016. 613 p.
6. Linghong Zhang, Lionel J.J. Catalan, Raymond J. Balec, Andrew C. Larsen, Hassan Haji Esmaeili, Stephen D. Kinrade. Effects of saccharide set retarders on the hydration of ordinary portlandcement and pure tricalcium silicate. Journal of the American Ceramic Society. 2010. Vol. 93. (1), pp. 279–287.
7. Maria C. Garci Juenger, Hamlin M. Jennings. New insights into the effects of sugar on the hydration and microstructure of cement pastes. Cement and Concrete Research. 2002. Vol. 32. (3), pp. 393–399.
8. Smitha B.J., Rawala A., Funkhouser G.P., Roberts L.R., Gupta V., Israelachvilia J.N., Chmelka B.F. Origins of saccharide-dependent hydration at aluminate, silicate, and aluminosilicate surfaces. Proceedings of the National Academy of Sciences (PNAS). 2011. Vol. 108. No. 22, pp. 8949–8954.
9. Shoshin E.A. Silicate the filler received by method of a termoliz of the modified cement hydrosilicates. Stroitel’nye Materialy [Construction Materials]. 2017. No. 7, pp. 16–19. (In Russian).
10. 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). 11. Kalashnikov V.I., Suzdal’tsev O.V., Dryanin R.A., Sekhposyan G.P. Role of disperse and fine-grained fillers in concrete of new generation. Izvestiya vysshikh uchebnykh zavedenii. Stroitel’stvo. 2014. No. 7 (667), pp. 11–21. (In Russian).
12. Shoshin E.A., Ivashchenko Yu.G. Research of composition of the cement hydrosilicates modified by isomerous bioses. Regional’naya arkhitektura i stroitel’stvo. 2016. No. 3 (28), pp. 50–54. (In Russian).
For citation: Shoshin E.A., Kazantseva I.L. Effect of sucrose occlusion by products of thermolysis of hydrate phases of portland cement. Stroitel’nye Materialy [Construction Materials]. 2018. No. 7, pp. 60–63. DOI: 10.31659/0585-430X-2018-761-7-60-63 (In Russian).