AbstractAbout AuthorsReferences
The industry of low-rise construction, which is dynamically developing at the present time, requires the selection of innovative materials and solutions, including fast-hardening types of binders. It is relevant to obtain composite gypsum binders (CGB) and concretes (solutions) based on them by using the appropriate ratio of components – gypsum binders, Portland cement and a complex of finely dispersed mineral additives that reduce the concentration of Ca(OH)2 in the liquid phase of the hardening system with the formation of low-base calcium hydrosilicates and other poorly soluble compounds that seal the structure and prevent penetration of moisture into the hardened binder. Materials based on CGB harden quickly enough and gain the required strength. The results of experimental studies presented in the article confirm the activity of fine mineral additives used (quartz sand, metakaolin VMK-45) and are consistent with the indicators of the physical and mechanical characteristics of gypsum cement binder based on them. During the hardening of CGB, the amorphous phase of SiO2 in the composition of the mineral additives used contributes to the binding of Ca(OH)2, released during hydration of C3S. The basicity of the hardening system decreases with the formation of low-base calcium hydrosilicates of the second generation and other neoplasms, which, together with the filler (limestone dust), compact the microstructure of the hardening matrix and, as a result, increase the stability of the composition.
S.A. OTHMAN AZMI, Postgraduate (This email address is being protected from spambots. You need JavaScript enabled to view it.),
N.V. CHERNYSHEVA, Doctor of Sciences (Engineering), Docent, Professor (This email address is being protected from spambots. You need JavaScript enabled to view it.),
M.Yu. DREBEZGOVA, Candidate of Sciences (Engineering), Docent (This email address is being protected from spambots. You need JavaScript enabled to view it.),
E.V. KOVALENKO, Postgraduate (This email address is being protected from spambots. You need JavaScript enabled to view it.),
S.V. MASALITINA, Magistrant, (This email address is being protected from spambots. You need JavaScript enabled to view it.)
N.V. CHERNYSHEVA, Doctor of Sciences (Engineering), Docent, Professor (This email address is being protected from spambots. You need JavaScript enabled to view it.),
M.Yu. DREBEZGOVA, Candidate of Sciences (Engineering), Docent (This email address is being protected from spambots. You need JavaScript enabled to view it.),
E.V. KOVALENKO, Postgraduate (This email address is being protected from spambots. You need JavaScript enabled to view it.),
S.V. MASALITINA, Magistrant, (This email address is being protected from spambots. You need JavaScript enabled to view it.)
Belgorod State Technological University named after V.G. Shukhov (46, Kostyukova Street, Belgorod, 308012, Russian Federation)
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2. Kuznetsova T.V., Nefediev A.P., Kossov D.Yu. Kinetics of hydration and properties of cement with the addition of metakaolin. Stroitel’nye Materialy [Construction Materials]. 2015. No. 7, pp. 3–6. (In Russian).
3. Drebezgova M.Yu., Chernysheva 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).
4. Drebezgova M.Yu. On the issue of heat release kinetics during hydration of gypsum binders (Part I). Vestnik BSTU named after V.G. Shukhov. 2017. No. 3, pp. 19–22. (In Russian).
5. Morozova N.N., Kuznetsova G.V., Maysuradze N.V., Akhtariev R.R., Abdrashitova L.R., Nizamutdino-va E.R. Research in the activity of a pozzolanic component and superplasticizer for gypsum cement pozzolanic binder of white colour (GCPB). Stroitel’nye Materialy [Construction Materials]. 2018. No. 8, pp. 26–30. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2018-762-8-26-30
6. Buryanov A.F., Fisher H.-B., Gal’tseva N.A., Machortov D.N., Hasanshin R.R. Research in the influence of various activating additives on the properties of anhydrite binder. Stroitel’nye Materialy [Construction Materials]. 2020. No. 7, pp. 4–9. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2020-782-7-4-9
7. Garkavi M.S., Artamonov A.V., Kolodezhnaya E.V., Nefedev A.P., Khudovekova E.A. Gypsum binder of low water demand: production and properties. Stroitel’nye Materialy [Construction Materials]. 2020. No. 7, pp. 34–38. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2020-782-7-34-38
8. Ruzina N.S., Yakovlev G.I., Gordina A.F., Pervushin G.N., Semenova Yu.A., Begunova E.V. Modification of binders based on calcium sulfate with complex additives. Stroitel’nye Materialy [Construction Materials]. 2020. No. 7, pp. 18–22. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2020-782-7-18-22
9. Petropavlovskaya V.В., Zavad’ko M.Yu., Novichenkova T.B., Petropavlovskii K.S., Buryanov A.F. Gypsum modified compositions with the use of activated basalt filler. Stroitel’nye Materialy [Construction Materials]. 2020. No. 7, pp. 10–17. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2020-782-7-10-17
10. Khaliulin M.I., Gilmannshina A.I. Influence of the type and mechanical activation of mineral fillers on the properties of composite gypsum binders. In the collection: X International Scientific and Practical Conference “Improving the efficiency of production and use of gypsum materials and products.” Conference materials. Voronezh. 2021, pp. 142–149. (In Russian).
11. Batova M.D., Semenova Yu.A., Gordina A.F., Yakovlev G.I., Buryanov A.F., Stevens A.E., Beguno-va E.V. Structure and properties of gypsum compositions with mineral dispersed additives. Stroitel’nye Materialy [Construction Materials]. 2021. No. 10, pp. 49–53. (In Russian). DOI: https://doi.org/10.1659/0585-430X-2021-796-10-49-53
12. Buryanov A.F., Fisher H.-B., Korovyakov V.F., Gal’tseva N.A., Buldyzhova E.N. Anhydrite binder modified with a complex additive for dry building mixtures. Stroitel’nye Materialy [Construction Materials]. 2022. No. 8, pp. 36–40. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2022-805-8-36-40
13. Gordina A.F., Polyanskikh I.S., Zhukova N.S., Yakovlev G.I. Pozzolanic constituent impact on structure and properties of modified sulfate-based composites. Stroitel’nye Materialy [Construction Materials]. 2022. No. 8, pp. 51–58. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2022-805-8-51-58
14. Usherov-Marshak A.V., Sinyakin A.G. The thermokinetic factor in cement hardening. Cement. 1997, pp. 19–21.
For citation: Othman Azmi S.A., Chernysheva N.V., Drebezgova M.Yu., Kovalenko E.V., Masalitina S.V. Composition and properties of composite gypsum binder with increased water resistance. Stroitel’nye Materialy [Construction Materials]. 2023. No. 5, pp. 81–88. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2023-813-5-81-88