Estimation of Efficiency of Applying Aqueous Dispersion of Carbon Particles in Anhydrite Binder

Number of journal: 1-2-2020
Autors:

Tokarev Yu.V.,
Volkov M.A.,
Ageev A.V.,
Kuzmina N.V.,
Grakhov V.P.,
Yakovlev G.I.,
Khazeev D.R.

DOI: https://doi.org/10.31659/0585-430X-2020-778-1-2-24-35
УДК: 691.553

 

AbstractAbout AuthorsReferences
The study focuses on the mechanical properties and structure of a binder based on natural anhydrite in the presence of an aqueous dispersion of carbon particles: industrial soot and isostatic graphite. Granulometric analysis shows that soot particles have higher dispersion compared to graphite, the main range for soot particles being from 50 to 500 nm. The use of soot in the form of tinting paste and graphite, a production waste, provides an increase in mechanical properties up to 25% with an optimal content of additive of 0.001% and 0.005%, respectively. The analysis of the results of the samples with the addition of soot obtained by differential scanning calorimetry and IR analysis shows the presence of changes in the environment of crystalline hydrate structures. The microstructural analysis has revealed the presence of both homogeneous and heterogeneous parts of the structure of gypsum stone. At the same time, the study has established the presence of orderly accumulation of well-formed and closely packed crystals of calcium sulfate dihydrate, presumably over the surface of soot particles, the presence of crystals with concave surfaces, and the presence of tight contacts between crystals which increase the density of the interfacial surface and the strength of the anhydrite matrix. Adding a plasticizer to the composition of anhydrite binder in an amount of 0.8% along with soot provides an increase of up to 45% in the late stages of hardening and a significant decrease in the early stages of hardening.
Yu.V. TOKAREV, Candidate of Science (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
M.A. VOLKOV, Bachelor (This email address is being protected from spambots. You need JavaScript enabled to view it.),
A.V. AGEEV, Bachelor (This email address is being protected from spambots. You need JavaScript enabled to view it.),
N.V. KUZMINA, Engineer (postgraduate) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
V.P. GRAKHOV, Doctor of Science (Economics) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
G.I. YAKOVLEV, Doctor of Science (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
D.R. KHAZEEV, Candidate of Science (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)

Kalashnikov Izhevsk State Technical University (7, Studencheskaya Street, Izhevsk, 426069, Russian Federation)

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For citation: Tokarev Yu.V., Volkov M.A., Ageev A.V., Kuzmina N.V., Grakhov V.P., Yakovlev G.I., Khazeev D.R. Estimation of efficiency of applying aqueous dispersion of carbon particles in anhydrite binder. Stroitel’nye Materialy [Construction Materials]. 2020. No. 1–2, pp. 24–35. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2020-778-1-2-24-35


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