AbstractAbout AuthorsReferences
The main results of studies of the influence of different activation methods on the efficiency of metallurgical dust as a modifier of the properties of gypsum binder are presented. It is proved that the functionalization of metallurgical dust makes it possible to increase the efficiency of the technogenic product, leading to an increase in the strength characteristics of the gypsum binder. The use of mechanical activation together with grafting of functional groups makes it possible to reduce the concentration of the modifier by 4 times, the increase in compressive and bending strength at the same time exceeds 100%. The most economical method of activation is the introduction of chemical additives (Portland cement). This method allows to increase the compressive strength of gypsum compositions up to 40%. The introduction of the activated modifier affects the processes of hydration and hardening of gypsum, leading to the formation of amorphous tumors on the surface of the crystals based on calcium hydrosilicates, which provide additional bonds between the crystals and block their surface, limiting the access of water, which is confirmed by the data of infrared and microstructural analysis.
A.F. GORDINA1, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
G.I. YAKOVLEV1, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
N.S. RUZINA1, Master
R. DROCHITKA2, Professor (This email address is being protected from spambots. You need JavaScript enabled to view it.)
N.V. BEGUNOVA1, Engineer
N.V. KUZMINA1, Engineer
E.V. BEGUNOVA1, Engineer
G.I. YAKOVLEV1, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
N.S. RUZINA1, Master
R. DROCHITKA2, Professor (This email address is being protected from spambots. You need JavaScript enabled to view it.)
N.V. BEGUNOVA1, Engineer
N.V. KUZMINA1, Engineer
E.V. BEGUNOVA1, Engineer
1 Kalashnikov Izhevsk State Technical University (7, Studencheskaya Street, Izhevsk, 426069, Russian Federation)
2 Brno University of Technology (63900, Brno Poříčí, 273/5)
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8. Khaliullin M.I., Gaifullin A.R., Rakhimov R.Z. The complex effect of the components on the basic properties of artificial stone based on clinker-free composite gypsum binders. Izvestiya Kazanskogo gosudarstvennogo arkhitekturno-stroitel’nogo universiteta. 2016. No. 2 (36), pp. 212–220. (In Russian).
9. Gordina A.F. Calcium sulphate composite materials with dispersed modifiers. Cand. Diss. (Engineering). Kazan. 2016. 160 p.
10. Yakovlev G.I., Gordina A.F., Polyanskikh I.S., Fisher H.-B., Ruzina N.C., Shameeva E.V., Kholmogorov M.E. Gypsum compositions modified with Portland cement and metallurgic dust. Stroitel’nye Materialy [Construction Materials]. 2017. No. 6, pp. 76–79. DOI: https://doi.org/10.31659/0585-430X-2017-749-6-76-79. (In Russian).
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For citation: Gordina A.F., Yakovlev G.I., Ruzina N.S., Drochitka R., Begunova N.V., Kuzmina N.V., Begunova E.V. Activation of metallurgical dust to modify the properties of gypsum compositions. Stroitel’nye Materialy [Construction Materials]. 2019. No. 10, pp. 53–57. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2019-775-10-53-57