Volume 5, Issue 3, September 2020, Page: 41-46
To the Question of Structure Formation of Dispersed Systems in Cement Technology
Chernyak Lev, Department of Chemical Technology of Composite Material, National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Кyiv, Ukraine
Sviderskyy Valentin, Department of Chemical Technology of Composite Material, National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Кyiv, Ukraine
Tokarchuk Volodymyr, Department of Chemical Technology of Composite Material, National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Кyiv, Ukraine
Dorogan Natalia, Department of Chemical Technology of Composite Material, National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Кyiv, Ukraine
Received: Jul. 10, 2020;       Accepted: Jul. 24, 2020;       Published: Aug. 10, 2020
DOI: 10.11648/j.wjac.20200503.11      View  79      Downloads  27
Abstract
In the this publication, readers will find the results of the analytical and experimental research into the physical and chemical processes in the consecutive formation of structures at the major technological stages of the present-day production of portland cement. Dispersed systems of raw mixtures, which in different methods of production are formed at the stage of grinding, mixing and homogenization of raw materials, belong to different classification groups. In wet and combined methods is produced cement sludge - aqueous dispersed system, which belongs to the 2nd group: two-phase systems such as solid dispersed phase - liquid dispersion medium. In the dry method dispersed system is formed, which belongs to the 3rd group: three-phase systems such as solid dispersed phase - water-liquid and air-gas dispersion medium. The structural-mechanical and rheological properties of the coagulation structure of cement slurries, wich differ in the main raw material components, are shown. The study of deformation processes of aqueous dispersed systems showed that the nature of the development of deformations - rapid elastic ε0’, slow elastic ε2’ and plastic ε1’τ sludge samples belong to different structural - mechanical types. At the same time differences in quantitative values and a ratio of the specified types of deformation are noted. Readers will also find the particularities of the phase changes in the process of the crystallization structure formation at baking to maximum temperature 1450°С.
Keywords
Cement, Technology, Structure, Water System, Baking, Phase Composition
To cite this article
Chernyak Lev, Sviderskyy Valentin, Tokarchuk Volodymyr, Dorogan Natalia, To the Question of Structure Formation of Dispersed Systems in Cement Technology, World Journal of Applied Chemistry. Vol. 5, No. 3, 2020, pp. 41-46. doi: 10.11648/j.wjac.20200503.11
Copyright
Copyright © 2020 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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