English
Русский 30-36 p.
Aerated concrete at the moment is one of the perspective thermal insulation materials. However, the production of high-quality aerated concrete products is associated with a number of difficulties, primarily related to the features of the manufacturing technology and, in particular, to the formation of its structure during the period of gas evolution and the impact on this process of a large number of factors. The best conditions for the formation of cellular concrete are created when the maximum gas release and the optimum values of the plasticity-viscous characteristics of the aerated concrete mixture are found. Achieving optimal conditions is extremely difficult, which leads to a deterioration in the physico-mechanical characteristics of the final products. One of the ways to solve this problem is to increase the amount of mixing water, however, along with a positive effect (reducing the viscosity of the system), this leads to a decrease in the gas-holding capacity of the mixture. In this connection, the possibility of increasing the production efficiency of the cellular concrete mixture by optimizing the recipe-technological parameters was considered. With the help of the method of mathematical planning, a three-factor experiment was carried out, as the factors of variation were: the duration of the preliminary aging of the mixture, the dosage of the blowing agent and the water-hard ratio, the output parameters were the compressive strength and the average density of the final products. The obtained results made it possible to reveal the regularities of the change in the output parameters from the variable factors and to establish that the preliminary aging of the mixture before the introduction of the gassing agent positively affects the structure and, as a consequence, the physico-mechanical characteristics of the final products.
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2. Lesovik V.S., Elistratkin M.YU. Tekhnologiya neavtoklavnogo yacheistogo betona s ponizhennymi ehnergozatratami. V sbornike: Belgorodskaya oblast': proshloe, nastoyashchee, budushchee Materialy oblastnoj nauchno-prakticheskoj konferencii v 3-h chastyah. 2011. P. 51 – 54. (rus.)
3. Sulejmanova L.A., Pogorelova I.A., Kondrashev K.R., Sulejmanov K.A., Piriev YU.S. EHnergosberegayushchie gazobetony na kompozicionnyh vyazhushchih. Vestnik BGTU im. V.G. SHuhova. 2016. 4. S. 73 – 83. (rus.)
4. Lesovik V.S., Elistratkin M.YU., Absimetov M.V., Kogut E.V. K voprosu polucheniya vysokoprochnogo gazobetona. Regional'naya arhitektura i stroitel'stvo. 2017. 3 (32). P. 11 – 20. (rus.)
5. Lesovik V.S., Elistratkin M.YU., Glagolev E.S., Absimetov M.V., SHatalova S.V., Lesnichenko E.N. Adaptaciya tekhnologii neavtoklavnogo gazobetona k stroitel'noj 3D pechati. Vestnik BGTU im. V.G. SHuhova. 2017. 8. P. 6 – 11. (rus.)
6. Ali J Hamad Materials, Production, Properties and Application of Aerated Lightweight Concrete: Review. International. J. of Materials Science and Engineering. 2014. 2 (2). P. 152 – 157.
7. Lina Lekūnaitė-Lukošiūnė, Giedrius Balčiūnas, Modestas Kligys Influence of Micro additives on Macrostructure of Autoclaved Aerated Concrete. International Journal of Engineering Science Invention. 2017. 6 (2). P. 72 – 79.
8. Fedin A.A. Nauchno-tekhnicheskie osnovy proizvodstva i primeneniya silikatnogo yacheistogo betona. M.: Izd-vo GASIS, 2002. 264 p. (rus.)
9. Kunnos G.YA., Zemcov D.G. Plastichno-vyazkie harakteristiki yacheistobetonnyh smesej. Sb. nauch. tr. NIPISilikatobetona. Tallin, 1967. 2. P. 29 – 478. (rus.)
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11. YAvruyan H.S., Holodnyak M.G., SHujskij A.I., Stel'mah S.A., SHCHerban' E.M. Vliyanie nekotoryh recepturno-tekhnologicheskih faktorov na svojstva neavtoklavnogo gazobetona. Inzhenernyj vestnik Dona. 2015. 4 (38). P. 93. (rus.)
12. Volodchenko A.N., Lesovik V.S. Reologicheskie svojstva gazobetonnoj smesi na osnove netradicionnogo syr'ya. Vestnik BGTU im. V.G. SHuhova. 2012. 3. P. 45 – 48. (rus.)
13. Sulejmanova L.A. Upravlenie processom formirovaniya poristoj struktury yacheistyh betonov. Vestnik BGTU im. V.G. SHuhova. 2016. 2. P. 69 – 76. (rus.)
14. Strahov A.V., Kalyuzhnyj S.O. Formirovanie zamknutoj poristosti v neavtoklavnom gazobetone. Tekhnicheskoe regulirovanie v transportnom stroitel'stve. 2016. 2 (16). P. 1 – 4. (rus.)
15. Fomina E.V., Chulenyov A.S. Kozhukhova N.I. Properties control in autoclave aerated concrete by choosing of pore forming Al-agent. IOP Conf. Series: Materials Science and Engineering 2018. 365. 032044.
16. Kozhuhova N.I., Danakin D.N., ZHernovskij I.V Osobennosti polucheniya geopolimernogo gazobetona na osnove zoly-unosa Novotroickoj TEHC. Stroitel'nye materialy. 2017. 1-2. P. 113 – 117. (rus.)
17. Nelyubova V.V., Strokova V.V., Sumin A.V., Jernovskiy I.V. The structure formation of the cellular concrete with nanostructured modifier. Key Engineering Materials. 2017. 729. P. 99–103.
18. Volodchenko A.N., Lesovik V.S., Alfimov S.I., Volodchenko A.A. Regulirovanie svojstv yacheistyh silikatnyh betonov na osnove peschano-glinistyh porod. Izvestiya vysshih uchebnyh zavedenij. Stroitel'stvo. 2007. 10. P. 4 – 10. (rus.)
19. Volodchenko A.N., Alfimov S.I., Alfimova N.I. Avtoklavnye yacheistye betony na osnove poputno-dobyvaemyh peschano-glinistyh porod. Monografiya. Germaniya: Izd-vo LAP LAMBERT Academic Publishing GmbH & Co. KG. 153 p.
20. Volodchenko A.N., Strokova V.V. Osobennosti tekhnologii polucheniya konstrukcionno-teploizolyacionnyh yacheistyh betonov na osnove netradicionnogo syr'ya. Vestnik BGTU im. V.G. SHuhova. 2017. 1. P. 138 – 143. (rus.)
Alfimova N.I., Pirieva S.Yu., Gudov D.V., Shurakov I.M., Korbut Е.Е. Optimization of receptural-technological parameters of manufacture of cellular concrete mixture. Construction Materials and Products. 2018. 1 (2). P. 30 – 36. https://doi.org/10.34031/2618-7183-2018-1-2-30-36