UDK 666.946.2 Расширяющиеся или безусадочные цементы
GRNTI 67.09 Строительные материалы и изделия
OKSO 22.03.01 Материаловедение и технологии материалов
BBK 383 Строительные материалы и изделия
TBK 5415 Строительные материалы и изделия. Производство стройматериалов
Shrinkage is one of the main problems related to the hardening of concrete and reinforced concrete structures, which varies depending on the type of concrete and its quality. The negative effects of shrinkage can be prevented by using admixtures with ordinary Portland cement, which produce non-shrinking and expansive cement. The author used gypsum as an additive, mixed it with cement clinker, and obtained expanded cement. Additionally, by using activated mineral additives (AMD) with pozzolanic activity, the author obtained a cement stone with a denser structure, low porosity, and high physical properties. From an economic and environmental perspective, the use of AMD in non-shrinking and expanding cement is also beneficial, as it saves clinker in cement production. The influence of additives on the deformation properties of the binder was studied using the experimental design method. The deformation of cement at the ages of 2, 3, 7, 14, and 28 days was deter-mined according to standard methods for researching the deformation characteristics of cement stone. The research results are presented in surface form and represented by a quadratic regression equation. The regression equation describes the influence of active mineral expan-sion additives on the deformation of cement stone during hardening. The results obtained include a composition with the maximum expansion effect and a composition with maximum shrinkage when using complex additives. These results can be used in the future to predict the defor-mation properties of the binder.
composite additives, cement deformation, gypsum, tripoli, calcium sulfoaluminate, sulfoaluminate cement, experimental planning, regression equation.
1. Krivoborodov Yu.R., Samchenko S.V. Sulfate-bearing solid solution of calcium aluminates and ferrites. 9th Inter-national Congress on the Chemistry of Cement. New Delhi. 1992. Vol. 3. Pp. 201-215.
2. Osokin A.P., Krivoborodov Y.R., Samchenko S.V. Melt structure and properties clinkers containing calcium sul-foferrites and sulphoalumoferrites. 10th International Con-gress on the Chemistry of Cement. Gothenburg. 1997. Vol. 1. 8 pp.
3. Kuznecova T.V., Talaber Y. Glinozemistye cementy. M.: Stroyizdat. 1988. 272 c.
4. Hiroshi Sasano, Ippei Maruyama, Mechanism of drying-induced change in the physical properties of concrete: A mesoscale simulation study, Cement and Concrete Re-search, Volume 143, 2021, 106401, ISSN 0008-8846, https://doi.org/10.1016/j.cemconres.2021.106401 .
5. Wioletta Soja, Fabien Georget, Hamed Maraghechi, Ka-ren Scrivener, Evolution of microstructural changes in ce-ment paste during environmental drying, Cement and Con-crete Research, Volume 134, 2020, 106093, ISSN 0008-8846, https://doi.org/10.1016/j.cemconres.2020.106093 .
6. D.P. Bentz, M.R. Geiker, K.K. Hansen, Shrinkage-reducing admixtures and early-age desiccation in cement pastes and mortars, Cement and Concrete Research, Vol-ume 31, Issue 7, 2001, Pages 1075-1085, ISSN 0008-8846, https://doi.org/10.1016/S0008-8846(01)00519-1 .
7. Pengcheng Lv, Guangcheng Long, Youjun Xie, Jianwei Peng, Shulai Guo, Study on the mitigation of drying shrink-age and crack of limestone powder cement paste and its mechanism, Construction and Building Materials, Volume 411, 2024, 134325, ISSN 0950-0618, https://doi.org/10.1016/j.conbuildmat.2023.134325 .
8. Wenyan Zhang, Huaxia Lin, Mengfen Xue, Shuai Wang, Junsheng Ran, Faqiang Su, Jianping Zhu, Influence of shrinkage reducing admixtures on the performance of ce-mentitious composites: A review, Construction and Build-ing Materials, Volume 325, 2022, 126579, ISSN 0950-0618, https://doi.org/10.1016/j.conbuildmat.2022.126579 .
9. Peiliang Shen, Linnu Lu, Yongjia He, Fazhou Wang, Jianxin Lu, Haibing Zheng, Shuguang Hu, Investigation on expansion effect of the expansive agents in ultra-high per-formance concrete, Cement and Concrete Composites, Volume 105, 2020, 103425, ISSN 0958-9465, https://doi.org/10.1016/j.cemconcomp.2019.103425 .
10. Shuling Gao, Zhe Wang, Wenchang Wang, Huafang Qiu, Effect of shrinkage-reducing admixture and expansive agent on mechanical properties and drying shrinkage of Engineered Cementitious Composite (ECC), Construction and Building Materials, Volume 179, 2018, Pages 172-185, ISSN 0950-0618, https://doi.org/10.1016/j.conbuildmat.2018.05.203 .
11. S. Samchenko and D. Zorin Influence of calcium sulphoaluminoferrite on the cement stone structure E3S Web Conf., 164 (2020) 14002
12. Samchenko S.V., Kuznetsova T.V. Resistance of the calcium sulphoaluminate phases to carbonation // Cement, Wapno, Beton. 2014. No. 5. Pp. 317-322. WOS:000342730100004
13. Julien Bizzozero, Christophe Gosselin, Karen L. Scrive-ner. Expansion mechanisms in calcium aluminate and sul-foaluminate systems with calcium sulfate. // Cement and Concrete Research. 2014. Vol. 56. Pp. 190-202. DOI: https://doi.org/10.1016/j.cemconres.2013.11.011 .
14. Krivoborodov Yu R., Samchenko S.V., Kuznetsova T.V. Structural Changes in Refractory Calcium Aluminate Cement Concrete // Refractories and Industrial Ceramics. 2018. Vol. 59. No. 2. Pp. 151–155. https://doi.org/10.1007/s11148-018-0197-1.
15. Rahimov R.Z., Kamalova Z.A., Ermilova E.Yu., Stoya-nov O.V. Termicheski obrabotannyy trepel kak aktiv-naya mineral'naya dobavka v cement // Vestnik Kazan-skogo tehnologicheskogo universiteta. 2014. №. 13. S. 99-101.
16. Trofimov K. V. Issledovanie svoystv cementnogo kamnya s dobavkoy trepel. Nauchnyy poisk: materialy vos'moy nauchnoy konferencii aspirantov i doktoran-tov. Chelyabinsk. 2016. S. 41-46.
17. Jing Yang, Peng Hou, Yong Pan, Honglei Zhang, Caiqi-an Yang, Wan Hong, Kefeng Li, Shear behaviors of hollow slab beam bridges strengthened with high-performance self-consolidating cementitious composites, Engineering Struc-tures, Volume 242, 2021, 112613, ISSN 0141-0296, https://doi.org/10.1016/j.engstruct.2021.112613 .
18. M. Iqbal Khan, S. Umer Sial, Galal Fares, Mohamed ElGawady, Shehab Mourad, Yousef Alharbi, Flexural per-formance of beams strengthened with a strain-hardening cementitious composite overlay, Case Studies in Construc-tion Materials, Volume 17, 2022, e01645, ISSN 2214-5095, https://doi.org/10.1016/j.cscm.2022.e01645 .
19. Samchenko S.V. Formirovanie i genezis struktury cementnogo kamnya: monografiya. M.: MGSU, Ay Pi Er Media, EBS ASV. 2016. 248 s.
20. Kuznecova T.V. Alyuminatnye i sul'foalyuminat-nye cementy. M: Stroyizdat. 1986. 208 s.
21. Kuznecova T. V., Sychev M. M., Osokin A. P., Korneev V. I., Sudakas L. G. Special'nye cementy. SPb.: Stroyizdat. 1997. 314 s.
22. Nguen Zoan Tung Lam, Samchenko S. V., Tang Van Lam, Schvecova V. A. Optimizaciya proporciy kompozi-cionnogo vyazhuschego s kompleksnymi dobavkami // Vest-nik MGSU. 2023. T. 18. Vyp. 3. S. 427–437. https://doi.org/10.22227/1997-0935.2023.3.427-437 .
23. Hartman K., Leckiy E.K., Shefer V., Leckaya N.S., Fomin G.A. Planirovanie eksperimenta v issledova-nii tehnologicheskih processov. M.: Mir, 1977. 552 s.
24. Nguyễn Minh Tuyển. Quy hoạch thực nghiệm. Hà Nội: NXB Khoa học và Kỹ thuật. 2007. 264 tr.
25. Aleksandrova O.V., Maceevich T.A., Kir'yanova L.V, Solov'ev V.G. Statisticheskie metody resheniya tehno-logicheskih zadach: uchebnoe posobie. M.: Izd-vo MGSU. 2017. 153 s.
26. Bol'shev L.N., Smirnov N.V. Tablicy matematiche-skoy statistiki. Moskva: Nauka. 1983. 416s.
