Changing the Technological Properties and Strength Characteristics of Highly Mobile Concrete by Introducing a Complex Modifier

The article considers the effect of a complex modifier consisting of a superplasticizer and cement crystallohydrates on the properties of cement dough, a highly mobile concrete mixture and heavy concrete obtained by hardening the mixture under normal conditions over a different period of time. As an additive of the superplasticizer, Relamix-PK was studied, administered in an amount of 0.6–0.8 wt. % of cement consumption. The authors investigated finely dispersed hydrated cement as additional crystallization centers. With the introduction of this complex modifier, the delamination of a highly mobile concrete mixture decreases (water separation – by 2 times, water separation – by 3.8 times). There is a significant acceleration of hardening in the initial periods of concrete hardening. Thus, in relation to the additive–free composition, the strength of concrete, which hardened for 1 day under normal conditions, increased 3.5 times, 3 days – 2.5 times, 28 days – 2 times. At the same time, it should be noted that when cement crystallohydrates are added, the hardening process is accelerated more in the initial terms of strength gain. The greatest strengthening effect was obtained by adding a complex modifier consisting of 0.8% plasticizer and 2% hydrated cement.

L.V. IL'INA, Doctor of Sciences (Engineering), Professor, Advisor to the RAASN (This email address is being protected from spambots. You need JavaScript enabled to view it.),
G.I. BERDOV, of Sciences (Engineering), Professor (This email address is being protected from spambots. You need JavaScript enabled to view it.),
N.S. VISHNYAKOV, Graduate Student (This email address is being protected from spambots. You need JavaScript enabled to view it.),
D.A. TSEKAR, Graduate Student (This email address is being protected from spambots. You need JavaScript enabled to view it.)

Novosibirsk State University of Architecture and Civil Engineering (113, Leningradskaya Street, Novosibirsk, 630008, Russian Federation)

1. Rubin O.D., Ilyin Yu.A., Shevkin A.L., Evdokimova I.V. Creation of cast concrete mixtures using domestically produced additives. Gidrotekhnicheskoye stroitel’stvo. 2024. No. 1, pp. 12–17. (In Russian).
2. Saidumov M.S., Murtazaeva T.S.A., Khubaev M.S.M., Murtazaeva R.S.A. Mineral fillers of technogenic origin for obtaining highly fluid concrete mixtures. In the collection: MILLIONSHIP-2019. Materials of the II All-Russian Scientific and Practical Conference of Students, Postgraduate Students and Young Scientists, dedicated to the 100th anniversary of GGNTU. 2019, pp. 291–298. (In Russian).
3. Kastornykh L.I., Kaklyugin A.V., Gikalo M.A., Trishchenko I.V. Features of the composition of concrete mixes for concrete pumping technology. Stroitel’nye Materialy [Construction Materials]. 2020. No. 3, pp. 4–11. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2020-779-3-4-11
4. Yamada K., Kim C.B., Ichitsubo K., Ichikawa M. Combined effect of cement characteristics on the perfofmance of superplasticizers. An investigation in real cement plants. Proceedings of 8-th CANMET/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete. Sorrento, Italy. 2006. Vol. 1, pp. 159–174.
5. Kastornykh L.I., Rautkin A.V., Raev A.S. The influence of water-retaining additives on some properties of self-compacting concrete. Part I. Rheological characteristics of cement compositions Stroitel’nye Materialy [Construction Materials]. 2017. No. 7, pp. 34–38. (In Russian).
6. Kastornykh L.I., Detochenko I.A., Arinina E.S. The influence of water-retaining additives on some properties of self-compacting concrete. Part 2. Rheological characteristics of concrete mixtures and strength of self-compacting concrete Stroitel’nye Materialy [Construction Materials]. 2017. No. 11, pp. 22–27. (In Russian).
7. Khalikov R.M., Ivanova O.V., Korotkova L.N., Sinitsin D.A. Supramolecular mechanism of the influence of polycarboxylate superplasticizers on the controlled hardening of construction nanocomposites. Nanotekhnologii v stroitel’stve: scientific online journal. 2020. Vol. 12. No. 5, pp. 250–255. (In Russian).
8. Lotov V.A., Sarkisov Yu.S., Gorlenko N.P., Zubkova O.A. Thermokinetic studies in the «cement-microsilica-superplasticizer-water» system. Tekhnika i tekhnologiya silikatov. 2021. Vol. 28. No, 2, pp. 42–49. (In Russian).
9. Murtazaev S.A.Yu. Comparative analysis of superplasticizers for monolithic concrete mixtures. High technology and innovation: electronic collection of reports of the International Scientific and Practical Conference dedicated to the 65th anniversary of BSTU named after V.G. Shukhov. Belgorod. 2019. Vol. 1, pp. 313–319. (In Russian). DOI: 10.12737/conferencearticle_5cecedc3920f65.65892749
10. Nizina T.A., Balykov A.S., Korovkin D.I., Volodin S.V., Volodin V.V. The influence of complex modifiers based on polycarboxylate superplasticizer and mineral additives of various compositions on the technological and physical-mechanical properties of cement systems. Regional’naya arkhitektura i stroitel’stvo. 2022. No. 1 (50), pp. 28–36. (In Russian).
11. Korovkin M.O., Korotkova A.A., Eroshkina N.A. Efficiency of a complex mineral additive in fine-grained self-compacting concrete. Regional’naya arkhitektura i stroitel’stvo. 2021. No. 3 (48), pp. 114–122. (In Russian).
12. Burenina O.N., Andreeva A.V., Savvinova M.E., Nikolaeva L.A. Study of the influence of finely dispersed additives from local raw materials on the strength properties of sulfur concrete. Materialovedeniye. 2023. No. 11. pp. 34–39. (In Russian).
13. Murtazaev S.A.Yu., Salamanova M.Sh., Alaskhanov A.Kh., Murtazaeva T.S.A. Prospects for the use of cement industry waste for the production of modern concrete composites. Stroitel’nye Materialy [Construction Materials]. 2021. No. 5, pp. 55–62. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2021-791-5-55-62
14. Nelubova 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: https://doi.org/10.31659/0585-430X-2021-798-12-48-54
15. Ilina L.V., Samchenko S.V., Rakov M.A., Zorin D.A. Modeling the kinetics of cement composite processes modified with calcium-containing additives. Nanotechnologies in construction. 2023. No. 15 (5), pp. 494–503. DOI: https://doi.org/10.15828/2075-8545-2023-15-5-494-503
16. Ilina L.V., Molodin V.V., Gichko N.O., Tulyaganov A.K. Improving the strength characteristics of cement conglomerates with directional additives. Stroitel’nye Materialy [Construction Materials]. 2023. No. 7, pp. 36–42. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2023-815-7-36-42
17. Khizhinkova E.Yu., Muzalevskaya N.V., Ovchinnikov S.P. The influence of high-calcium ash from thermal power plants on the properties of highly mobile concrete mixtures. Polzunovskiy vestnik. 2014. No. 1, pp. 214–217. (In Russian).
18. Samchenko S.V. Formirovaniye i genezis struktury tsementnogo kamnya: monografiya [Formation and genesis of the structure of cement stone: monograph]. Moscow: IP Er Media, EBS ASV. 2016. 284 p. URL: http://www.iprbookshop.ru/49874.html
19. Hagverdiyeva T.A., Jafarov R. Impact of fine ground mineral additives on properties of concrete. Stroitel’nye Materialy [Construction Materials]. 2019. No. 3, pp. 73–76. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2019-768-3-73-76
20. Ilina L.V, Kudyakov A.I., Rakov M.A. Aerated dry mix concrete for remote northern territories. Magazine of Civil Engineering. 2022. No. 5 (113), pp. 11310. DOI: 10.34910/MCE.113.10
21. Nguyen D.V.K., Bazhenov Yu.M., Aleksandrova O.V. The influence of quartz powder and mineral additives on the properties of high-strength concrete. Vestnil of the MSUCE. 2019. Vol. 14. No. 1 (124), pp. 102–117. (In Russian). DOI: https://doi.org/ 10.25686/2542-114X.2020.3.7