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First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address.Avksentiev Vladislav Igorevich architect 2nd category E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it JSC «Kazan Giproniiaviaprom» The organization address: 420127, Russia, Kazan, Dementyeva st., 1 Krasinikova Natalya Mihailovna candidate of technical sciences, аssoсiаtе рrofеssor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Stepanov Sergei Viktorovich candidate of technical sciences, аssoсiаtе рrofеssor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Makarov Dmitry Borisovich candidate of technical sciences, аssoсiаtе рrofеssor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kazan State University of Architecture and Engineering The organization address: 420043, Russia, Kazan, Zelenaya st., 1
Title of the articleProperties and phase composition of hydrated cement stone modified by sludge during chemical treatment of combined heat and power plants
Abstract.Problem statement. The purpose of the study is to study the effect of sludge from chemical water treatment of heat and power plants (CHP) on the technological properties of cement paste, strength characteristics and phase composition of cement stone in order to consider the possibility of using this waste in cement systems. Results. Chemical water treatment sludge (SHHVO) is a paste-like and unstable in moisture mass, therefore, for rational use, it was previously dried and then milled. The article shows that the introduction of SHHVO in cement paste increases its water demand. Therefore, the joint effect of sludge with additives on the naphthalene formaldehyde and polyether carboxylate base was studied. The use of sludge with superplasticizers can reduce the consumption of binder by 7.5 % without loss of strength and reduce the porosity of cement stone. The method of differential thermal analysis was used to study the products of hydration of cement stone with the considered slurry. It was established that the introduction of SHWO into cement systems leads to a change in the morphology of neoplasms, both on the first and on the 28th day of hardening. Conclusions. The significance of the results obtained for the construction industry lies in the fact that the possibility of using large-tonnage industrial wastes - sludge of the SHHVO CHPP in cement systems is shown. It was revealed that the effectiveness of the sludge depends on the method of its introduction into the cement system.
Keywords.cement stone, strength, concrete, sludge of chemical water treatment, waste disposal, hydration.
For citations:Avksentiev V.I., Krasinikova N.M., Stepanov S.V., Makarov D.B. Properties and phase composition of hydrated cement stone modified by sludge during chemical treatment of combined heat and power plants // Izvestiya KGASU. 2020. №2(52) P.24-33.


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