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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">vdgtu</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Дагестанского государственного технического университета. Технические науки</journal-title><trans-title-group xml:lang="en"><trans-title>Herald of Dagestan State Technical University. Technical Sciences</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2073-6185</issn><issn pub-type="epub">2542-095X</issn><publisher><publisher-name>Daghestan State Technical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21822/2073-6185-2021-48-4-187-196</article-id><article-id custom-type="elpub" pub-id-type="custom">vdgtu-1012</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>СТРОИТЕЛЬСТВО И АРХИТЕКТУРА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BUILDING AND ARCHITECTURE</subject></subj-group></article-categories><title-group><article-title>Исследование влияния электроразогрева керамзитобетонной смеси на структуру и свойства легких керамзитобетонов, подверженных воздействию высоких температур</article-title><trans-title-group xml:lang="en"><trans-title>Investigation of the effect of electric heating of expanded clay concrete mixture on the structure and properties of lightweight expanded clay concrete exposed to high temperatures</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хаджишалапов</surname><given-names>Г. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Khadzhishalapov</surname><given-names>G. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хаджишалапов Гаджимагомед Нурмагомедович, доктор технических наук, профессор, заведующий кафедрой технологии и организации строительного производства</p><p>367026, г. Махачкала, пр. Имама Шамиля, 70</p></bio><bio xml:lang="en"><p>Gadzhimagomed N. Khadzhishalapov, Dr. Sci. (Eng.), Prof., Head of the Department of Technology and Organization of Construction Production </p><p>367026, Makhachkala, Imam Shamil Ave., 70</p></bio><email xlink:type="simple">yarus-x@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хежев</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Khezhev</surname><given-names>T. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хежев Толя Амирович, доктор технических наук, профессор, директор института, заведующий кафедрой строительного производства </p><p>360004, г. Нальчик, ул. Чернышевского,173</p></bio><bio xml:lang="en"><p>Tolya A. Hezhev, Dr. Sci. (Eng.), Prof., Director of the Institute, Head of the Department of Construction Production </p><p>173 Chernyshevsky Str., Nalchik 360004</p></bio><email xlink:type="simple">hejev_tolya@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гаджиев</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Gadzhiev</surname><given-names>A. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гаджиев Абдулла Магомедсаламович, старший преподаватель, кафедра технологии и организации строительного производства </p><p>367026, г. Махачкала, пр. Имама Шамиля, 70</p></bio><bio xml:lang="en"><p>Abdulla M. Gadzhiev, Senior Lecturer, Department of Technology and Organization of Construction Production </p><p>367026, Makhachkala, Imam Shamil Ave., 70</p></bio><email xlink:type="simple">Abdulla_gadzhiev_1986@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Раджабов</surname><given-names>Р. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Radjabov</surname><given-names>R. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Раджабов Рустам Габибуллаевич, старший преподаватель, кафедра архитектуры</p><p>367026, г. Махачкала, пр. Имама Шамиля, 70</p></bio><bio xml:lang="en"><p>Rustam G. Radjabov, Senior Lecturer, Department of Architecture </p><p>367026, Makhachkala, Imam Shamil Ave., 70</p></bio><email xlink:type="simple">Radzabovrustam67@mail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Исаева</surname><given-names>У. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Isaeva</surname><given-names>U. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Исаева Улангерек Исаковна, ассистент, кафедра технологии и организации строительного производства</p><p>367026, г. Махачкала, пр. Имама Шамиля, 70</p></bio><bio xml:lang="en"><p>Ulangerek I. Isaeva, Assistant, Department of Technology and Organization of Construction Production </p><p>367026, Makhachkala, Imam Shamil Ave., 70</p></bio><email xlink:type="simple">www.ulana@bk.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Дагестанский государственный технический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Daghestan State Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Кабардино-Балкарский государственный университет им. Х.М. Бербекова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>H.M. Berbekov Kabardino-Balkarian State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>12</day><month>02</month><year>2022</year></pub-date><volume>48</volume><issue>4</issue><fpage>187</fpage><lpage>196</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Хаджишалапов Г.Н., Хежев Т.А., Гаджиев А.М., Раджабов Р.Г., Исаева У.И., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Хаджишалапов Г.Н., Хежев Т.А., Гаджиев А.М., Раджабов Р.Г., Исаева У.И.</copyright-holder><copyright-holder xml:lang="en">Khadzhishalapov G.N., Khezhev T.A., Gadzhiev A.M., Radjabov R.G., Isaeva U.I.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://vestnik.dgtu.ru/jour/article/view/1012">https://vestnik.dgtu.ru/jour/article/view/1012</self-uri><abstract><p>Цель. Целью исследования является изучение влияния предварительного электроразогрева бетонной смеси на структуру и свойства жаростойкого керамзитобетона на композиционном вяжущем до сушки при температуре 105оС. Метод. В основу заложен отечественный и зарубежный опыт исследования влияния предварительного электроразогрева на свойства и структуру различных бетонов, в том числе жаростойких. Результат. Разработан и апробирован лабораторный стенд для предварительного электроразогрева смесей. Исследовано влияние предварительного электроразогрева на процесс самопропаривания жаростойкого керамзитобетона. Разработан режим предварительного электроразогрева жаростойкого керамзитобетонной смеси во времени. Получены зависимости напряжений, обусловленные разницей температурных коэффициентов линейного расширения крупного и мелкого заполнителя и растворной части от температуры нагрева; определены зависимости предела прочности керамзитобетона от температуры нагрева керамзитобетонной смеси при различных режимах предварительного разогрева с композиционным вяжущим с соотношением компонентов: портландцемента 70%, минеральная добавка 30%. Вывод. Предварительный электроразогрев смеси для жаростойкого бетона с керамзитовым заполнителем на основе активированного композиционного вяжущего позволит получить бетон с более высокими физико-термическими и эксплуатационными характеристиками, а также сократить технологический процесс изготовления жаростойких изделий, период сушки и вывода теплового агрегата на рабочий режим.</p></abstract><trans-abstract xml:lang="en"><p>Objective. The aim of the study is to study the effect of preliminary electrical heating of the concrete mixture on the structure and properties of heat-resistant expanded clay concrete on a composite binder before drying at a temperature of 105°C. Method. It is based on domestic and foreign experience in studying the effect of preliminary electrical heating on the properties and structure of various concretes, including heat-resistant ones. Result. A laboratory stand for preliminary electrical heating of mixtures has been developed and tested. The influence of preliminary electric heating on the process of self-steaming of heat-resistant expanded clay concrete has been studied. A mode of preliminary electric heating of a heat-resistant expanded clay concrete mixture in time has been developed. Stress dependences are obtained due to the difference in the temperature coefficients of linear expansion of coarse and fine aggregates and the mortar part on the heating temperature, as well as the dependences of the ultimate strength of expanded clay concrete on the heating temperature of the expanded clay concrete mixture under various modes of preheating with a composite binder with a ratio of components: Portland cement 70%, mineral additive 30%. Conclusion. Based on the results obtained and the analysis of the studies carried out in the field of preliminary electrical heating of concrete mixtures, it can be concluded that the preliminary electrical heating of a mixture for heatresistant concrete with expanded clay filler based on an activated composite binder will make it possible to obtain concrete with higher physico-thermal and operational characteristics, as well as to reduce the technological process of manufacturing heat-resistant products, the drying period and bringing the thermal unit to the operating mode.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>предварительный электроразогрев</kwd><kwd>керамзитобетон</kwd><kwd>самопропаривание</kwd><kwd>режим нагрева</kwd><kwd>водотвердое отношение</kwd></kwd-group><kwd-group xml:lang="en"><kwd>electrical preheating</kwd><kwd>expanded clay concrete</kwd><kwd>self-steaming</kwd><kwd>heating mode</kwd><kwd>watersolid ratio</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Некрасов К.Д. 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