Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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AUTOCLAVED AERATED CONCRETE PHASE COMPOSITION RESEARCH

Kaftaeva M.V. 1 Rakhimbaev Sh.M. 1 Pospelova E.A. 1
1 Belgorod State Technological University named after V. Shukhov
The research of the factorial autoclaved aerated concrete samples phase composition with medium density 400, 500, 600 kg/m3 was performed on the basis of x-ray and thermal analysis methods. X-ray analysis has shown that all the samples studied contains nonhomogenious tobermorite (11,3 Ả) and xonotlite (3,07 Ả) being the predominant hydrate phases in the materials under study. The processes of hydrated phase formation are more fully noticed by 20-40% in the samples with medium density 400 kg/m3 in comparison with 600 kg/m3. It was specified that the density of products greatly impacts on the content and composition of hydrate phases but this influence is not of a fundamental nature. It was studied that the main binding substances of the autoclaved aerated concrete products densities are tobermorite, xonotlite and eventually calcium monosulfoaluminate. The resulting data are confirmed by the results of thermal analysis.