Archive - Известия Казанского государственного архитектурно-строительного университета.

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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.Mukhametrakhimov R.Kh. – candidate of technical sciences, associate professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Shafigullin R.I. – post-graduate student Kuprijanov V.N. – doctor of technical sciences, professor 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 articleDevelopment of radioprotective schungite-containing gypsum-fiber facing sheets
Abstract.Problem statement. The aim of the research is to develop radioprotective shungite-containing gypsum fiber facing sheets, which can be used in the device of partitions in rooms with sources of increased electromagnetic radiation. Results. The main results of the study are to establish the effectiveness of a binary active mineral additive for a gypsum cement-pozzolanic binder, including metakaolin and shungite in a ratio of 1:3, estimated from the absorption of CaO. It has been established that the introduction of schungite in an amount of 5-10 % of the weight of binder allows increasing the flexural strength of gypsum fiber based on it up to 11,2 %, further increase in its content leads to an increase in the water requirement of the mixture, to the dilution effect of the binder and reduces the strength limits of grafting. Dependences of the attenuation coefficients of electromagnetic waves and the ultimate strengths of bending of gypsum fiber on the content of schungite (0-30 %) in the compositions studied are established. It was found that with an increase in the shungite content, an increase in their protective properties was observed in the investigated electromagnetic waves frequency intervals (2-6 GHz). Conclusions. The significance of the obtained results for the construction industry consists in obtaining shungite-containing gypsum-fiber articles intended to protect various objects from the effects of electromagnetic radiation.
Keywords.electromagnetic radiation, composite materials, radioprotective constructions, radio absorbing properties, schungite, gypsum-fiber sheets.
For citations:Mukhametrakhimov R.Kh., Shafigullin R.I., Kuprijanov V.N. Development of radioprotective schungite-containing gypsum-fiber facing sheets // Izvestiya KGASU. 2017. №3(41) P.224-231.

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