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Technological features of manufacturing of dispersion-reinforced cellular concrete

Abstract

The technological features of obtaining a cellular concrete mixture with dispersed reinforcement are considered. The optimal conditions for the formation of a cellular concrete mixture with a fibrous additive of asbestos are determined. The results of studies of rheological characteristics to determine the values of the optimal content of dispersed reinforcement of autoclaved cellular concrete from the position of molding and synchronization of the processes of swelling and setting of cellular concrete mixture are presented.. The technological scheme of organized serial production of non-autoclaved fiber foam concrete (basalt and polypropylene fiber) with the release of pilot batches of gypsum partition plates is given. The optimal content of fiber reinforcement, as well as the optimal length and diameter of the fibers in the manufacture of cellular fiber concrete in order to minimize the shrinkage deformation, are determined. The experimental data obtained as a result of studies of crack resistance of cellular fiber concrete, indicating a positive effect of dispersed reinforcement on its crack resistance due to the manifestation of shrinkage deformations. A criterion is proposed for assessing and normalizing the crack resistance of cellular fiber-reinforced concrete, due to the manifestation of shrinkage deformations, according to the crack resistance coefficient Кcrc The experimental compositions of autoclaved aerated concrete (fibrogas concrete) and non-autoclaved (fiber foam concrete), as well as fibro-gas-concrete mixtures are given.

About the Authors

V. Strotskiy
NIIZHB named after A.A. Gvozdev JSC Research Center of Construction
Russian Federation


S. Zimin
NIIZHB named after A.A. Gvozdev JSC Research Center of Construction
Russian Federation


A. Krokhin
LLC «Holdingvibropress»
Russian Federation


V. Stepanova
NIIZHB named after A.A. Gvozdev JSC Research Center of Construction
Russian Federation


V. Savin
NIIZHB named after A.A. Gvozdev JSC Research Center of Construction
Russian Federation


References

1. Крашенинников А.Н. Классификация ячеистых бетонов и совершенствование технологии их производства / Сб. «Жилые дома из ячеистого бетона». - Л.: Госстройиздат, 1963.

2. Крохин А.М. Автоклавный ячеистый бетон с повышенной прочностью при растяжении / Дисс.. канд. техн. наук: 05.23.05 / Крохин Алексей Митрофанович, Москва, 1979.

3. Макарычев В.В. О ячеистом бетоне, армированном волокнами. / Сб. НИИЖБ «Фибробетон и его применение в строительстве». НИИЖБ Госстроя СССР - М. 1979.

4. Патент RU (11) 2226517 (13) C2 «Способ получения ячеистого бетона неавтоклавного твердения» / Ухова Т.А.; Вотинцев В.С. Заявл. 09.08.2001. Регистрационный номер заявки: 2001122290/03. Опубл. 10.04.2004.

5. СП 297.1325800.2017. Конструкции фибробетонные с неметаллической фиброй. Правила проектирования.

6. Стольников В.В., Литвинова Р.Е. Трещиностойкость бетона. - М.: Энергия, 1972.

7. Суворов И.О. Дисперсное полиармирование как способ снижения усадки фибропенобетона. Диссертация. канд. техн. наук. Суворов Иван Олегович Санкт-Петербург, 2015.

8. Шатава В., Шкрдлик Я. Пористый бетон Силикорк. М.: Госстройиздат,1962.


Review

For citations:


Strotskiy V., Zimin S., Krokhin A., Stepanova V., Savin V. Technological features of manufacturing of dispersion-reinforced cellular concrete. Bulletin of Science and Research Center of Construction. 2020;24(1):118-131. (In Russ.)

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ISSN 2224-9494 (Print)
ISSN 2782-3938 (Online)