Modified Gypsum Binder for Plastering Systems

Abstract:

A natural gypsum binder or its analogs, which are the products of local raw materials recycling or by-products of other industries, is used as a basic component in the composition of interior plastering mixtures. Plaster coatings based on a gypsum binder have two main features. The first is the ability to control room humidity and absorb harmful emissions. The second is the ability to implement the barrier protection function in case of fire.Improvement of plastering works quality and optimization of their cost is related to the development of modified gypsum-based compositions, the justified use of waste, and local building materials, which include a clay-gypsum binder. Clay gypsum as a natural material of sedimentary origin is widespread both in Russia and in post-Soviet countries. In terms of energy intensity and manufacturability, raw materials recycling into clay-gypsum binder does not differ from the conditions of traditional processing of natural gypsum. Compared with lime or cement mortars, mortars based on clay-gypsum binders have greater elasticity and plasticity. Such properties as convenient masonry and thixotropy as well as the interval for maintaining the viability of the mixture are related to application technology and regulated by the insertion of modifying additives, which formulation was the aim of the research. The research results are presented in this article. Studies have shown that varying the recipe parameters allows us to control both the strength and operating characteristics of clay-based mixtures, as well as their application technology.

• Periodical: Key Engineering Materials (Volume 887)
• Pages: 428-433
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.887.428
• Online since: May 2021
• Authors: M.O. Asamatdinov, I.I. Popov*, S.P. Chernukhin, Alexey D. Zhukov
• Keywords: Additives, Clay-Gypsum, Gypsum Binder, Modified Binder, Plaster

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