{"id":890,"date":"2014-06-09T23:08:55","date_gmt":"2014-06-09T19:08:55","guid":{"rendered":"http:\/\/nanobuild.ru\/en_EN\/?p=890"},"modified":"2015-06-09T23:09:58","modified_gmt":"2015-06-09T19:09:58","slug":"nanobuild-3-2015-pages-43-59","status":"publish","type":"post","link":"https:\/\/nanobuild.ru\/en_EN\/nanobuild-3-2015-pages-43-59\/","title":{"rendered":"nanobuild-3-2015-pages-43-59"},"content":{"rendered":"

THE RESULTS OF THE SPECIALISTS\u2019 AND SCIENTISTS\u2019 RESEARCHES<\/strong><\/p>\n

Pages:\u00a0\u00a0 43-59<\/strong><\/p>\n

UDC 666.974; 661.666.4<\/strong><\/p>\n

The carbonaceous concrete based on sawdust<\/strong><\/p>\n

Authors: <\/strong>BELOUSOVA Elena Sergeevna<\/strong>, Post-graduate student of the Department of \u00abInformation Security\u00bb Belarussian State University of Informatics and Radioelectronics, Minsk, Belarus; L.Bedy, 2b, hostel \u2116 3, room 135b, Minsk, Belarus, 220040, elena1belousova@gmail.com;<\/p>\n

LYNKOV Leonid Mihailovich<\/strong>, Doctor of Engineering, Professor, Head of the Department \u00abInformation Security\u00bb Belarussian State University of Informatics and Radioelectronics, Minsk,<\/p>\n

Belarus; Independence Avenue, 157\u2013197, Minsk, Belarus, 220114, leonid@bsuir.by;<\/p>\n

Abdolsalam Meftah MOHAMED Abulgasim<\/strong>, Post-graduate student of the Department of \u00abInformation Security\u00bb Belarussian State University of Informatics and Radioelectronics, Minsk, Belarus; Parnikovaja st., 11\u201377, Minsk, Belarus, 220114, a.slam78@yahoo.com<\/p>\n

Extended Abstract: <\/strong>Today there are many requirements for strength, ecology and economy of<\/p>\n

produced concretes. The authors of the paper study attenuation of electromagnetic radiation of carbonaceous powders in the concrete composition. Carbon black was selected as a carbon powder for addition in concrete composition. Carbon black is a nanomaterial with disoriented structure of particles (average size is about 50 nm). The composition of the carbon black contains at least 90 wt.% amorphous carbon, more than 5 wt. % chemisorbed oxygen and about 4 wt.% of impurities. Materials with the addition of carbon black have electrical conductivity due to the high content of carbon. These materials are able to absorb electromagnetic radiation. For cement composition with addition of carbon black (more than 30 wt. %) and water transmission coefficient of electromagnetic radiation is about \u201310 dB, for cement composition with 20 wt. % of carbon black the reflection coefficient is \u20138 dB in the frequency range 8\u201312 GHz. The concretes with a saturated aqueous solution of calcium chloride and 10% of carbon black possess minimal reflection coefficient (\u201314… \u20138 dB). Electromagnetic radiation shielding of concrete with the addition of sawdust was investigated. The concrete with sawdust (40 wt. %) impregnated with an aqueous solution with carbon black has the reflection coefficient less than \u20138 dB and transmission coefficient \u201340 dB in the frequency range 8\u201312 GHz. These concretes can be used for creation of a shielded room with the technical equipment for information processing to prevent data leakage through the compromising emanations and crosstalk.<\/p>\n

Key words: <\/strong>calcium chloride solution, carbon black, concrete, electromagnetic radiation transmission coefficient, reflection coefficient of electromagnetic radiation, sawdust.<\/p>\n

DOI: dx.doi.org\/10.15828\/2075-8545-2015-7-3-43-59<\/strong><\/p>\n

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        Full text in PDF format (43-59)<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

        THE RESULTS OF THE SPECIALISTS\u2019 AND SCIENTISTS\u2019 RESEARCHES Pages:\u00a0\u00a0 43-59 UDC 666.974; 661.666.4 The carbonaceous concrete based on sawdust Authors: BELOUSOVA Elena Sergeevna, Post-graduate student of the Department of \u00abInformation Security\u00bb Belarussian State University of Informatics and Radioelectronics, Minsk, Belarus; Read More …<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-890","post","type-post","status-publish","format-standard","hentry","category-1"],"_links":{"self":[{"href":"https:\/\/nanobuild.ru\/en_EN\/wp-json\/wp\/v2\/posts\/890","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nanobuild.ru\/en_EN\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nanobuild.ru\/en_EN\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nanobuild.ru\/en_EN\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nanobuild.ru\/en_EN\/wp-json\/wp\/v2\/comments?post=890"}],"version-history":[{"count":1,"href":"https:\/\/nanobuild.ru\/en_EN\/wp-json\/wp\/v2\/posts\/890\/revisions"}],"predecessor-version":[{"id":891,"href":"https:\/\/nanobuild.ru\/en_EN\/wp-json\/wp\/v2\/posts\/890\/revisions\/891"}],"wp:attachment":[{"href":"https:\/\/nanobuild.ru\/en_EN\/wp-json\/wp\/v2\/media?parent=890"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nanobuild.ru\/en_EN\/wp-json\/wp\/v2\/categories?post=890"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nanobuild.ru\/en_EN\/wp-json\/wp\/v2\/tags?post=890"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}