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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">vestnikcstroy</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник НИЦ «Строительство»</journal-title><trans-title-group xml:lang="en"><trans-title>Bulletin of Science and Research Center of Construction</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2224-9494</issn><issn pub-type="epub">2782-3938</issn><publisher><publisher-name>АО «НИЦ «Строительство»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.37538/2224-9494-2025-3(46)-174-184</article-id><article-id custom-type="edn" pub-id-type="custom">ZPLTBF</article-id><article-id custom-type="elpub" pub-id-type="custom">vestnikcstroy-561</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>СТРОИТЕЛЬНЫЕ МАТЕРИАЛЫ И ИЗДЕЛИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BUILDING MATERIALS AND PRODUCTS</subject></subj-group></article-categories><title-group><article-title>Исследование влияния извести в качестве модифицирующей добавки на физико-механические свойства бетонов специального назначения</article-title><trans-title-group xml:lang="en"><trans-title>Effect of lime as a modifying additive on the physical and mechanical properties of special concrete</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>Соколова</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Sokolova</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Светлана Владимировна Соколова*, канд. техн. наук, доцент, доцент кафедры «Производство строительных материалов, изделий и конструкций», ФГБОУ ВО «Самарский государственный технический университет», Самара</p><p>ул. Молодогвардейская, д. 244, г. Самара, 443100, Российская Федерация</p><p>e-mail: sokolova9967@mail.ru </p></bio><bio xml:lang="en"><p>Svetlana V. Sokolova*, Cand. Sci. (Engineering), Associate Professor, Associate Professor of the Department of Production of Building Materials, Products, and Structures, Samara State Technical University, Samara</p><p>Molodogvardeyskaya str., 244, Samara, 443100, Russian Federation</p><p>e-mail: sokolova9967@mail.ru </p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сидоренко</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Sidorenko</surname><given-names>Yu. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Юлия Викторовна Сидоренко, канд. техн. наук, доцент кафедры «Производство строительных материалов, изделий и конструкций», ФГБОУ ВО «Самарский государственный технический университет», Самара</p><p>ул. Молодогвардейская, д. 244, г. Самара, 443100, Российская Федерация</p><p>e-mail: sm-samgasa@mail.ru </p></bio><bio xml:lang="en"><p>Yulia V. Sidorenko, Cand. Sci. (Engineering), Associate Professor of the Department of Production of Building Materials, Products, and Structures, Samara State Technical University, Samara</p><p>Molodogvardeyskaya str., 244, Samara, 443100, Russian Federation</p><p>e-mail: sm-samgasa@mail.ru </p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Самарский государственный технический университет»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Samara State Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>25</day><month>09</month><year>2025</year></pub-date><volume>46</volume><issue>3</issue><fpage>174</fpage><lpage>184</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Соколова С.В., Сидоренко Ю.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Соколова С.В., Сидоренко Ю.В.</copyright-holder><copyright-holder xml:lang="en">Sokolova S.V., Sidorenko Y.V.</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.cstroy.ru/jour/article/view/561">https://vestnik.cstroy.ru/jour/article/view/561</self-uri><abstract><sec><title>Введение</title><p>Введение. Рассмотрены возможности повышения физико-механических характеристик бетонов специального назначения (жаростойких бетонов, гипсобетона для изготовления стеновых панелей, предназначенных для зданий промышленного и гражданского назначения путем модификации с помощью извести).</p></sec><sec><title>Цель</title><p>Цель. Исследование процессов структурной модификации жаростойких бетонов и гипсобетона для повышения их физико-механических характеристик и увеличения долговечности.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. В составы жаростойких бетонов включалась тонкомолотая добавка – отработанный катализатор ИМ‑2201. В качестве активаторов процессов применялась гашеная известь в количестве 10 %, в результате чего наблюдалось увеличение прочности при сжатии исследуемых материалов по сравнению с изделиями того же состава, но без извести. Для повышения прочности гипсобетона, изготовленного на высокопрочном гипсе, вводилась добавка в виде негашеной молотой извести 5 и 10 %. Проводилось измерение электродных потенциалов стали в высокопрочном гипсе.</p></sec><sec><title>Результаты</title><p>Результаты. Испытания на предел прочности при сжатии образцов жаростойких бетонов, приготовленных на портландцементе с добавкой гашеной извести в количестве 10 %, показали 32 кгс/см2. В результате электрохимических исследований коррозии стали в гипсобетоне было выявлено, что включение в состав гипсобетона 10 % негашеной молотой извести не только повышает прочность изделий, но и способствует антикоррозионным процессам.</p></sec><sec><title>Выводы</title><p>Выводы. Жаростойкие бетоны на портландцементе с добавками в качестве отработанного катализатора ИМ‑2201 и гашеной извести в количестве 10 %, пропитанные ортофосфорной кислотой с концентрацией 30 %, обладают физико-термическими показателями, удовлетворительными для работы бетона при температуре 800 °C. Защитой стальной арматуры в гипсобетоне является добавка в гипсобетон молотой негашеной извести в количестве 10 % от веса гипса, что позволяет использовать его в производстве гипсобетонных панелей в промышленных и гражданских зданиях.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. The paper considers possibilities for improving the physical and mechanical properties of special concretes, including heat-resistant concrete, gypsum concrete for manufacturing wall panels for industrial and civil buildings, by modifying them with lime.</p></sec><sec><title>Aim</title><p>Aim. To examine the structural modification of heat-resistant concrete and gypsum concrete for improving their physical and mechanical properties and increasing their durability.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. A finely ground additive, IM-2201 spent catalyst, was added to the heat-resistant concrete mixes. Slaked lime was used as a process activator at a concentration of 10 %, causing an increase in the compressive strength of the tested materials compared to products of the same composition with no lime added. An additive in the form of 5 and 10 % quicklime was introduced to increase the strength of gypsum concrete made from high-strength gypsum. The electrode potentials of steel in high-strength gypsum were measured.</p></sec><sec><title>Results</title><p>Results. Compressive strength tests on samples of heat-resistant concrete made from Portland cement with 10 % added slaked lime revealed a strength of 32 kgf/cm2. Electrochemical studies of steel corrosion in gypsum concrete indicated that adding 10 % quicklime to gypsum concrete not only increases the strength of products but also contributes to anti-corrosion processes.</p></sec><sec><title>Conclusions</title><p>Conclusions. Heat-resistant Portland cement concretes added with IM-2201 spent catalyst and 10 % slaked lime, impregnated with 30 % orthophosphoric acid, have physical and thermal properties satisfactory for concrete operation at 800 °C. Steel reinforcement in gypsum concrete is protected by adding ground quicklime to the gypsum concrete as 10 % of the weight of the gypsum, thus enabling its use in the production of gypsum concrete panels in industrial and civil buildings.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>огнеупоры</kwd><kwd>модификация</kwd><kwd>термостойкость</kwd><kwd>отходы промышленного производства</kwd><kwd>жаростойкие бетоны</kwd><kwd>высокопрочный гипс</kwd><kwd>отработанный катализатор ИМ‑2201</kwd><kwd>известь</kwd></kwd-group><kwd-group xml:lang="en"><kwd>refractory</kwd><kwd>modification</kwd><kwd>heat resistance</kwd><kwd>industrial waste</kwd><kwd>heat-resistant concrete</kwd><kwd>high-strength gypsum</kwd><kwd>IM-2201 spent catalyst</kwd><kwd>lime</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">&lt;i&gt;Передерий И.А., Федоров В.П.&lt;/i&gt; Исследование коррозии стали в гипсобетоне на высокопрочном гипсе и электрохимическая защита. 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