Conclusions
The life of car bottoms made from guncrete concrete is five times greater than that of bottoms made from brick. Using the guncreting method the labor productivity for repairing bases is doubled. The working conditions of the metal construction and car bypass are improved. There is a reduction in the expense for lining bases, taking into account the difference in the costs of the brick and the guncrete body.
The body containing high-alumina cement has proved itself in service, and is suitable for objects with working temperatures above 1300°C. Preliminary moistening of the aggregate sharply reduces the dust emission during guncreting.
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Literature cited
K. D. Nekrasov, Heat-Resistant Concretes [in Russian], Promstroiizdat (1957).
N. V. Il'ina et al., Lining Rotary Cement Kilns [in Russian], Gosstroiizdat (1967).
A. P. Frolov, Steklo i Keram., No. 8, 43 (1967).
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Translated from Ogneupory, No. 6, pp. 58–61, June, 1971.
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Belogrudov, A.G., Kalugin, G.A., Eremin, V.N. et al. Guncreting bases of tunnel kiln cars. Refractories 12, 408–410 (1971). https://doi.org/10.1007/BF01282064
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DOI: https://doi.org/10.1007/BF01282064