Influence of Electro-Surface Properties of Mineral Filler on Frost Resistance of Powder Concretes

Number of journal: 10-2019
Autors:

Rakhimbaev Sh.M.
Tolypina N.M.
Kosinova A.A.
Khakhaleva E.N.

DOI: https://doi.org/10.31659/0585-430X-2019-775-10-12-15
УДК: 691.32

 

AbstractAbout AuthorsReferences
The influence of mineral fillers with positively and negatively charged electro-surface properties on the frost resistance of powder concretes is investigated. Tests for frost resistance were carried out according to GOST 10060-2012 (5.1), the first basic method. It is established that the samples of powder concrete with 30% of ground quartz sand have the lowest frost resistance, compared with powder concrete with 30% of ground marble and fine-grained concrete C:N=1:3. The results confirmed the hypothesis stated in the paper that concretes, in which the charge of the surface of pores and capillaries is strongly shifted to the negative domain, are subjected to deeper saturation of the material with water. This is evidenced by the results of changes in the mass of samples during frost resistance tests. t is proposed to use the data obtained as a theoretical basis for the selection of rational compositions of concrete of increased frost resistance, both fine-grained and powder.
Sh.M. RAKHIMBAEV1, Doctor of Sciences (Engineering)
N.M. TOLYPINA1, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
A.A. KOSINOVA2, Candidate of Sciences (Engineering), Head of Production Laboratory (This email address is being protected from spambots. You need JavaScript enabled to view it.)
E.N. KHAKHALEVA1, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)

1 Belgorod State Technological University named after V.G. Shukhov (46, Kostyukova Street, Belgorod, 308012, Russian Federation)
2 “Zavod zhelezobetonnykh konstruktsii №1” OJSC (Plant of reinforced concrete structures) (5, Kommunalnaya Street, Belgorod, 308009, Russian Federation)

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For citation: Rakhimbaev Sh.M., Tolypina N.M., Kosinova A.A., Khakhaleva E.N. Influence of electro-surface properties of mineral filler on frost resistance of powder concretes. Stroitel’nye Materialy [Construction Materials]. 2019. No. 10, pp. 12–15. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2019-775-10-12-15


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