Prospects of Application of Colloidal Additives for Modifying Cement Stone

At the present ecological situation, the problem of growing volumes of sulfur-containing waste can be solved by means of introducing the products of waste processing in the field of construction material science, for creation of concretes of a new generation in particular. Improved building-technical properties of these concretes can be achieved due to the introduction of high-disperse additives which make it possible to optimize the structure of cement and concrete materials. The article presents the results of experimental studies of the effect of a sulfur sol obtained by two different methods on the change in the structure and properties of the cement stone. When introducing the optimum amount of the sulfur sol, the acceleration of hydration and hardening, improvement of the cement stone strength take place. According to the results of electronic-microscopic and X-ray phase analyzes, differentially scanning calorimetry, it is established that the change in the microstructure of the cement stone is connected with the formation of complex combinations of sulfur and calcium.

M.A. SAVEL’EVA, Engineer (This email address is being protected from spambots. You need JavaScript enabled to view it.),
L.A. URKHANOVA, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
P.K. KHARDAEV, Doctor of Sciences (Engineering)

East Siberia State University of Technology and Management (40V, Klyuchevskaya Street, Ulan-Ude, 670013, Russian Federation)

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