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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Structural Mechanics of Engineering Constructions and Buildings</journal-id><journal-title-group><journal-title xml:lang="en">Structural Mechanics of Engineering Constructions and Buildings</journal-title><trans-title-group xml:lang="ru"><trans-title>Строительная механика инженерных конструкций и сооружений</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1815-5235</issn><issn publication-format="electronic">2587-8700</issn><publisher><publisher-name xml:lang="en">Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">36315</article-id><article-id pub-id-type="doi">10.22363/1815-5235-2023-19-3-322-328</article-id><article-id pub-id-type="edn">QONAUP</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Construction materials and products</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Строительные материалы и изделия</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Reinforcement of columns using different composite materials</article-title><trans-title-group xml:lang="ru"><trans-title>Армирование колонн с использованием различных композитных материалов</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8143-4614</contrib-id><name-alternatives><name xml:lang="en"><surname>Okolnikova</surname><given-names>Galina E.</given-names></name><name xml:lang="ru"><surname>Окольникова</surname><given-names>Галина Эриковна</given-names></name></name-alternatives><bio xml:lang="en"><p>PhD in Engineering, Associate Professor, Department of Civil Engineering, Academy of Engineering, RUDN University; Associate Professor, Department of Reinforced Concrete and Masonry Structures, National Research Moscow State University of Civil Engineering</p></bio><bio xml:lang="ru"><p>кандидат технических наук, доцент департамента строительства, инженерная академия, Российский университет дружбы народов; доцент кафедры железобетонных и каменных конструкций, Национальный исследовательский Московский государственный строительный университет</p></bio><email>okolnikova-ge@rudn.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2588-504X</contrib-id><name-alternatives><name xml:lang="en"><surname>Strashnova</surname><given-names>Svetlana B.</given-names></name><name xml:lang="ru"><surname>Страшнова</surname><given-names>Светлана Болеславна</given-names></name></name-alternatives><bio xml:lang="en"><p>PhD in Chemistry, Associate Professor, Department of General and Inorganic Chemistry, Faculty of Sciences</p></bio><bio xml:lang="ru"><p>кандидат химических наук, доцент, кафедра общей и неорганической химии, факультет физико-математических и естественных наук</p></bio><email>sstrashnova@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-9130-5823</contrib-id><name-alternatives><name xml:lang="en"><surname>Mabhena</surname><given-names>Sikhanyisiwe Mercy</given-names></name><name xml:lang="ru"><surname>Мабена</surname><given-names>Сиканьисиве Мерси</given-names></name></name-alternatives><bio xml:lang="en"><p>master's student, Department of Civil Engineering, Academy of Engineering</p></bio><bio xml:lang="ru"><p>магистрант, департамент строительства, инженерная академия</p></bio><email>mabhenasikha@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6401-2524</contrib-id><name-alternatives><name xml:lang="en"><surname>Strashnov</surname><given-names>Stanislav V.</given-names></name><name xml:lang="ru"><surname>Страшнов</surname><given-names>Станислав Викторович</given-names></name></name-alternatives><bio xml:lang="en"><p>PhD in Engineering, Head of the Department of Applied Informatics and Intelligent Systems in Humanities, Institute of the Russian Language</p></bio><bio xml:lang="ru"><p>кандидат технических наук, заведующий кафедрой прикладной информатики и интеллектуальных систем в гуманитарной сфере, институт русского языка</p></bio><email>shtrafnoy@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">RUDN University</institution></aff><aff><institution xml:lang="ru">Российский университет дружбы народов</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">National Research Moscow State University of Civil Engineering</institution></aff><aff><institution xml:lang="ru">Национальный исследовательский Московский государственный строительный университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-09-30" publication-format="electronic"><day>30</day><month>09</month><year>2023</year></pub-date><volume>19</volume><issue>3</issue><issue-title xml:lang="en">VOL 19, NO3 (2023)</issue-title><issue-title xml:lang="ru">ТОМ 19, №3 (2023)</issue-title><fpage>322</fpage><lpage>328</lpage><history><date date-type="received" iso-8601-date="2023-10-11"><day>11</day><month>10</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Okolnikova G.E., Strashnova S.B., Mabhena S.M., Strashnov S.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Окольникова Г.Э., Страшнова С.Б., Мабена С.М., Страшнов С.В.</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">Okolnikova G.E., Strashnova S.B., Mabhena S.M., Strashnov S.V.</copyright-holder><copyright-holder xml:lang="ru">Окольникова Г.Э., Страшнова С.Б., Мабена С.М., Страшнов С.В.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/structural-mechanics/article/view/36315">https://journals.rudn.ru/structural-mechanics/article/view/36315</self-uri><abstract xml:lang="en"><p style="text-align: justify;">The adoption in construction of composite materials made by combining two or more materials to produce a material with improved properties over the separate components has been steadily increasing over the past decades. In the past few years there have been advances in composite manufacturing technology, increased demand for sustainable and eco-friendly building materials, and the need for materials that are lightweight and easy for transportation. For these reason, architects and civil engineers incorporate composites into structural elements to achieve these desired goals and optimize the cost of construction. One of the most common composite materials that was introduced to the industry is fiber reinforced polymer (FRP), produced by combining fibers (carbon, glass, or aramid) with a polymer matrix (epoxy or polyester). FRP materials are lightweight, durable and corrosion resistant, which makes them ideal for use in a wide range of construction applications. This study aims to propose a comparison between four different methods as a viable solution to strengthen and reinforce column structures. The structural behavior of three different composite materials was investigated. One traditional concrete-steel column was tested in the experiment for comparison. The other three columns were reinforced using carbon fiber reinforced plastic (CFRP), glass fiber reinforced plastic (GFRP) and stainless steel respectively. The obtained experimental results were analyzed, and comparison of three different systems of reinforcement for strengthening columns with composite materials was performed.</p></abstract><trans-abstract xml:lang="ru"><p style="text-align: justify;">Внедрение в строительство композитных материалов, изготовленных путем объединения двух или более материалов с целью получения материала, обладающего улучшенными свойствами, по сравнению с отдельными компонентами, неуклонно растет в течение последних десятилетий. За это время произошел прогресс в технологии производства композитов, увеличился спрос на устойчивые и экологически чистые строительные материалы, а также потребность в материалах, являющихся легкими и удобными для транспортировки. По этой причине архитекторы и инженеры-строители включают композиты в конструктивные элементы для достижения желаемых целей и оптимизации стоимости строительства. Одним из наиболее распространенных композитных материалов, представленным в промышленности, является армированный волокнами полимер (FRP), полученный посредством объединения волокон (углерод, стекло или арамид) с полимерной матрицей (эпоксидная смола или полиэстер). Материалы FRP легкие, прочные и устойчивые к коррозии, что делает их идеальными для использования в самых разных областях строительства. Исследование нацелено на то, чтобы сравнить четыре различных метода в качестве жизнеспособного решения для укрепления и усиления конструкций колонн. Изучено структурное поведение трех различных композиционных материалов. В эксперименте для сравнения испытана одна традиционная бетонно-стальная колонна. Остальные три колонны усилены с использованием углепластика, стеклопластика и нержавеющей стали соответственно. Полученные экспериментальные результаты проанализированы, выполнено сравнение трех различных систем армирования для усиления колонн композитными материалами.</p></trans-abstract><kwd-group xml:lang="en"><kwd>composite materials</kwd><kwd>fibers</kwd><kwd>reinforcement</kwd><kwd>resin</kwd><kwd>matrix</kwd><kwd>strength</kwd><kwd>stiffness</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>композитные материалы</kwd><kwd>волокна</kwd><kwd>армирование</kwd><kwd>смола</kwd><kwd>матрица</kwd><kwd>прочность</kwd><kwd>жесткость</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Zadeh H.J., Nanni A. Design of RC columns using glass FRP reinforcement. Journal of Composites for Construction. 2013;17(3):294-304. http://doi.org/10.1061/(ASCE)CC.1943-5614.0000354</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Akguzel U., Pampanin S. 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