Özet:

A new method for producing a composition material based on low-grade clays and dolomite was developed. Its essence lies in the fact that the clay-dolomite composition material is made using ceramic technology but hardens as a binder in the subsequent hydraulic conditions. For producing clay-dolomite composition material, fusible clays of the Absheron deposit and dolomites of the Gobustan deposit are used. The influence of various factors: the degradation kinetics of carbonates during firing, mineralizers, related phases in the rocks used, firing temperature and duration, hydraulic treatment duration, etc. on strengthening of clay-dolomite composition materials was found and their hardening mechanism was revealed. Calcium hydroxide, obtained during clay-dolomite mixture firing in the presence of smaller cations (Mg, Al) forms compounds, having binding properties, with Si2O5 radicals. Such calcium silicates have layered structures and become stable only in the presence of water. It was found that the clay-dolomite composition materials gain sufficient strength after firing due to the formation of silicates, aluminum silicates and calcium and magnesium aluminates, which in their subsequent hardening in water conditions show binding properties, are hydrated to form hydrated compounds, leading to a significant increase in the composition strength. Author Biographies Ирада Нусрат кызы Ширинзаде, Azerbaijan Architecture and Construction University 5 A. Sultanova str., Baku, Azerbaijan, AZE1073 Doctor of Technical Sciences, Professor Department of Building Materials

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