Fine-Grained Concrete Modified With a Suspension of Chrysotile Nanofibers

Number of journal: №1-2-2019
Autors:

Yakovlev G.I.
Drochytka R.
Pervushin G.N.
Grakhov V.P.
Saidova Z.S.
Gordina А.F.
Shaybadullina A.V.
Pudov I.A.
Elrefai A.E.M.M.

DOI: https://doi.org/10.31659/0585-430X-2019-767-1-2-4-10
УДК: 691.276

 

AbstractAbout AuthorsReferences
This article presents the results of the study of the cement matrix modified with chrysotile nanofibers. The positive effect of this nanoadditive on the strength characteristics of the material was confirmed. It was noted that at the age of 7 days compressive strength of samples increased by 78% and bending strength – by 50%. Studies on a laser particle size analyzer confirmed that the nanosized component of chrysotile fibers prevails in suspension, which possibly influences the structuring process in the cement matrix. Fine-grained concrete modified with an aqueous suspension of chrysotile nanofibers in the amount of 0.1% of the cement weight was studied using the differential thermography method, IR spectrometry and scanning electron microscopy. These analysis methods proved that the introduction of a suspension of chrysotile nanofibers into the cement binder results in a change of the cement matrix composition and structure of a modified fine-grained concrete with the formation of calcium hydrosilicates of lower basicity, leading to an increase in the strength of cement concrete.
G.I. YAKOVLEV1, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
R. DROCHYTKA2, Dr. Eng.
G.N. PERVUSHIN1, Doctor of Sciences (Engineering)
V.N. GRAKHOV1, Doctor of Sciences (Economics)
Z.S. SAIDOVA1, Master
А.F. GORDINA1, Candidate of Sciences (Engineering)
A.V. SHAYBADULLINA1, Master
I.A. PUDOV1, Candidate of Sciences (Engineering)
A.E.M.M. ELREFAI3, Candidate of Sciences (Engineering)

1 Kalashnikov Izhevsk State Technical University (7, Studencheskaya Street, Izhevsk, 426069, Russian Federation)
2 Brno University of Technology (Faculty of Civil Engineering) (95, Veveri, Brno, 60200, Czech Republic)
3 Egyptian Russian University (Cairo-Suez road, Badr City, Cairo, 11829, Egipt)

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For citation: Yakovlev G.I., Drochytka R., Pervushin G.N., Grakhov V.P., Saidova Z.S., Gordina А.F., Shaybadullina A.V., Pudov I.A., Elrefai A.E.M.M. Fine-grained concrete modified with a suspension of chrysotile nanofibers. Stroitel’nye Materialy [Construction Materials]. 2019. No. 1–2, pp. 4–10. DOI: https://doi.org/10.31659/0585-430X-2019-767-1-2-4-10 (In Russian).


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