Phase Formation of Binders in the System «Lime – Granite NB» in Autoclaved Hardening Conditions

Number of journal: 10-2015
Autors:

Zhernovsky I.V.
Nelubova V.V.
Strokova V.V.
Osadchiy E.G.

DOI: https://doi.org/10.31659/0585-430X-2015-730-10-49-53
УДК: 691.544

 

AbstractAbout AuthorsReferences
This work introduces the results of X-ray diffraction study of phase formation in model systems, hardened in hydrothermal conditions in accordance with the parameters of the production of autoclaved materials. Reaction activity of the mineral components of granite NB is presented. Quantitative ratios of crystalline growths depending on the initial compound of the test composition were found. On the basis of X-ray diffraction analysis data a mechanism of phase formation of system «lime – Granite NB», which consists of the following: reactive silica contained in the binder composition assists the formation of low-basic calcium hydrosilicates (tobermorite and foshagite) – the main contributers of the strength properties of autoclaved materials. The presence of the aluminosilicate component in the binder leads to the formation of the zeolite phase as wairakite which is responsible for durability of products during their operation, as well as hydrogarnets. At the same time the studied system is characterized by the superposition of the hardening mechanisms of the composition: hydrational and geopolymeric.
I.V. ZHERNOVSKY1, Candidate of Sciences (Geology and Mineralogy)
V.V. NELUBOVA1, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
V.V. STROKOVA1, Doctor of Sciences (Engineering)
E.G. OSADCHIY2, Doctor of Sciences (Chemistry) (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 Institute of Experimental Mineralogy Russian Academy of Sciences (4, Academic Osip’yan Street, Moscow Region, Chernogolovka, 142432, Russian Federation)

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For citation: Zhernovsky I.V., Nelubova V.V., Strokova V.V., Osadchiy E.G. Phase Formation of Binders in the System «Lime – Granite NB» in Autoclaved Hardening Conditions. Stroitel’nye Materialy [Construction Materials]. 2015. No. 10, pp. 49-53. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2015-730-10-49-53


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