Modification of the structure of gypsum-cement- pozzolanic binder Ekaterina Potapova 1,* , Aung Kyaw Nyein 1 , Elena Tsvetkova 1 , and Hans-Betram Fischer 2 1 Mendeleev University of Chemical Technology, Russian Federation 2 Bauhaus Universität Weimar, Germany Abstract. Modification of the structure of gypsum-cement-pozzolan binder allows you to expand the range of gypsum binders for creating dry building mixes and structural elements of low-rise buildings. It was found that in the presence of functional additives, the character of crystallization of hydrate neoplasms changes, which leads to a change in the properties of the hardened binder. The study of the effect of individual and complex additives on the properties of gypsum-cement-pozzolan binder allowed us to develop water-resistant gypsum binders. 1 Introduction Products and structures made of binding materials are used everywhere today. At the same time, the new time requires the development of new structural and composite materials in conjunction with new technologies. Complex environmental and economic conditions in Russia also determine a new approach to the creation, production and use of building materials for various functional purposes [1-5]. At the same time, special attention should be paid to resource conservation, maximum use of local raw materials and waste from various industries, increasing the competitiveness of construction products, and using efficient high-tech technologies and materials. One of the ways to solve these difficult problems is the widespread use of gypsum materials in the construction. Gypsum binders and materials based on them have a number of valuable qualities: good heat and sound insulation properties, fire safety, relatively low density, decorative properties. Their production is non-toxic and has a low fuel and energy consumption (about 4-5 times less than cement production) [6-9]. Gypsum binders are included in the composition of dry mixes for different purposes. But till with the positive properties of gypsum products, low water resistance is inherent. There are several ways to increase the water resistance of a gypsum binder, one of the most effective is to create a gypsumcement-pozzolanic binder. Gypsumcement- pozzolanic binders (GCPB) are characterized by high water resistance, which contributes to a significant expansion of the application areas of products based on them. Gypsumcement-pozzolan binder is a composition of gypsum binder, Portland cement and active mineral additives. Depending on the type and composition of each component, as well as the method of preparation, the physicochemical and mechanical properties of the * Corresponding author: [email protected] © The Authors, published by EDP Sciences. This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/). MATEC Web of Conferences 329, 04007 (2020) https://doi.org/10.1051/matecconf/202032904007 ICMTMTE 2020
Modification of the structure of gypsum-cementpozzolanic binder
Apr 26, 2023
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