Cements Of Alkaline Activation The Possibility Of Reducing The Energy Intensity Of Building Composites

The relevance of the research is due to the fact that the production of the currently leading “structural” binder – Portland cement is increasing annually, and the carbon dioxide released in the process of obtaining cement has a negative impact on the environmental situation both of individual countries and the whole world. In this regard, the interest of the leading construction companies in solving the problem of transition to the clinker-free binders and building composites with their use to replace the resource – energy-intensive cement at least in those areas of construction where its high technical functional properties are not needed. The paper presents the results of energy dispersive microanalysis of the studied powders, both of natural and man-made origin, performed using a scanning electron microscope Quanta 3D 200 i. The optimal formulations and properties of clinker-free binders of alkaline activation on the basis of highly dispersed mineral components are revealed, effective compositions of fine concretes based on the use of the proposed clinker-free cements are obtained. Theoretical bases of formation of structure and strength of cement stone on the basis of alkaline activator are revealed. Theoretically justified and practically proved that the acid centers of Bronsted on the surface of the highly active powders accelerate the process of the synthesis of silica acid gel, promote the polymerization of silica oxide anions, increase the reactions of ion exchange and stabilize the intergranular contact formation. The results of the research conducted are of practical value for the construction industry, as the resulting formulations of clinker-free cements will make it possible to replace partially expensive and energy-intensive Portland cement in the production of concrete and reinforced concrete structures.

M.Sh. SALAMANOVA, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
S.-A.Yu. MURTAZAEV, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)

Grozny State oil technical university named after Academician M.D. Millionshikov (100, Avenue Isaev, Grozny, 364021, Russian Federation)

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