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Название Homogeneous pore distribution in foam concrete by two-stage foaming // Magazine of Civil Engineering. – 2021. – № 3 (103). — С. 10313
Авторы Lukpanov R. E. ; Dyussembinov D. S. ; Utepov Ye. B. ; Bazarbayev D. O. ; Tsygulyov D. V. ; Yenkebayev S. B. ; Shakhmov Zh. A.
Выходные сведения 2021
Коллекция Общая коллекция
Тематика Строительство ; Строительные материалы и изделия ; foam concrete ; two-stage foaming ; pore distribution ; building solutions ; strength ; uniformity of foam concrete ; testing of materials ; пенобетоны ; двухступенчатое вспенивание ; распределение пор (строительство) ; строительные растворы ; прочность растворов ; однородность пенобетонов ; испытание материалов
УДК 691
ББК 38.3
Тип документа Статья, доклад
Тип файла PDF
Язык Английский
DOI 10.34910/MCE.103.13
Права доступа Свободный доступ из сети Интернет (чтение, печать, копирование)
Ключ записи RU\SPSTU\edoc\67137
Дата создания записи 15.07.2021

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The article addresses the issues of investigating the homogeneity of foam concrete produced by three methods: the classical method (CM), dry foam mineralization (DM), as well as the proposed method of two-stage foaming (TSF). The study is necessary due to the impact of the manufacturing process on the homogeneity degree of foam concrete. Therefore, the TSF method is aimed at improving the homogeneity of the material structure by evenly distributing the pores through the sequential foam introduction. The homogeneity of the materials produced by the three methods was evaluated by comparing the results of discrete (point and localized) strength testing over the entire volume of the foam concrete blocks, as well as the results of thermal conductivity measurements. The test results obtained gave an understanding of the degree of materials homogeneity, and confirmed the impact of the foam concrete manufacturing process on its quality. Thus, the most homogeneous material structure throughout the entire volume is observed in TSF specimens, as evidenced by the minimum deviations of particular values of strength and thermal conductivity, ranging from 4,19 % (in the analysis of thermal conductivity) to 6,71 % (in the analysis of strength), while the same indicators for CM specimens are 22,4 % and 48,35 %, and for DM specimens are 11,05 % and 19,21 %, respectively.

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  • Homogeneous pore distribution in foam concrete by two-stage foaming
    • 1. Introduction
    • 2. Methods
    • 3. Results and Discussion
      • 3.1. Strength results of segmented cylindrical specimens by Unconfined compression test
      • 3.2. Dynamic Mechanical Analysis results for strength determination of small cube material specimens
      • 3.3. Results of the determination of the thermal conductivity of standard specimens
    • 4. Conclusion
    • 5. Acknowledgment

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