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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">mgssuvest</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник МГСУ</journal-title><trans-title-group xml:lang="en"><trans-title>Vestnik MGSU</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1997-0935</issn><issn pub-type="epub">2304-6600</issn><publisher><publisher-name>Moscow State University of Civil Engineering (National Research University) (MGSU)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.22227/1997-0935.2025.12.1920-1934</article-id><article-id custom-type="elpub" pub-id-type="custom">mgssuvest-816</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>Строительное материаловедение</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Construction material engineering</subject></subj-group></article-categories><title-group><article-title>Влияние полипропиленовой фибры на физико-механические свойства стеклодоломитовых листов</article-title><trans-title-group xml:lang="en"><trans-title>The influence of polypropylene fibre on the physical and mechanical properties of glass-dolomite sheets</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2382-1023</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бикаева</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Bikaeva</surname><given-names>Yu. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Юлия Вячеславовна Бикаева — аспирант</p><p>420043, г. Казань, ул. Зеленая, д. 1</p><p>РИНЦ AuthorID: 1045930, Scopus: 57213838597</p></bio><bio xml:lang="en"><p>Yuliya V. Bikaeva — postgraduate student</p><p>1 Zelenaya st., Kazan, 420043</p></bio><email xlink:type="simple">uliyaevstigneeva@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8879-1190</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ибрагимов</surname><given-names>Р. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ibragimov</surname><given-names>R. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Руслан Абдирашитович Ибрагимов — кандидат технических наук, доцент, заведующий кафедрой технологии строительного производства</p><p>420043, г. Казань, ул. Зеленая, д. 1</p><p>РИНЦ AuthorID: 619018, Scopus: 56504969400, ResearcherID: O-5968-2017</p></bio><bio xml:lang="en"><p>Ruslan A. Ibragimov — Candidate of Technical Sciences, Associate Professor, Head of the Department of Construction Production Technology</p><p>1 Zelenaya st., Kazan, 420043</p></bio><email xlink:type="simple">rusmag007@yandex.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1728-1825</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гимранов</surname><given-names>Л. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Gimranov</surname><given-names>L. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Линур Рафаилевич Гимранов — кандидат технических наук, доцент</p><p>420043, г. Казань, ул. Зеленая, д. 1</p><p>РИНЦ AuthorID: 745548, Scopus: 57210968788</p></bio><bio xml:lang="en"><p>Linur R. Gimranov — Candidate of Technical Sciences, Associate Professor</p><p>1 Zelenaya st., Kazan, 420043</p></bio><email xlink:type="simple">leenuur@gmail.com</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3600-812X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Королев</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Korolev</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Евгений Валерьевич Королев — доктор технических наук, профессор, проректор по научной деятельности, заведующий кафедрой технологий строительных материалов и метрологии</p><p>190005, г. Санкт-Петербург, ул. 2-я Красно-армейская, д. 4</p><p>РИНЦ AuthorID: 351849, Scopus: 37099331400, ResearcherID: K-8134-2013</p></bio><bio xml:lang="en"><p>Evgenii V. Korolev — Doctor of Technical Sciences, Professor, Vice-Rector for Research, Head of the Department of Building Materials Technologies and Metrology</p><p>4, 2nd Krasnoarmeiskaya st., 190005, St. Petersburg</p></bio><email xlink:type="simple">korolev@nocnt.ru</email><xref ref-type="aff" rid="aff-4"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Казанский государственный архитектурно-&#13;
строительный университет (КГАСУ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kazan State University of Architecture and Engineering (KSUAE)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Казанский государственный архитектурно-строительный университет (КГАСУ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kazan State University of Architecture and Engineering (KSUAE)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Казанский государственный&#13;
архитектурно-строительный университет (КГАСУ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kazan State University of Architecture and Engineering (KSUAE)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Санкт-Петербургский государственный архитектурно-строительный университет (СПбГАСУ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saint Petersburg State University of Architecture and Civil Engineering (SPbGASU)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>30</day><month>12</month><year>2025</year></pub-date><volume>20</volume><issue>12</issue><fpage>1920</fpage><lpage>1934</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Бикаева Ю.В., Ибрагимов Р.А., Гимранов Л.Р., Королев Е.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Бикаева Ю.В., Ибрагимов Р.А., Гимранов Л.Р., Королев Е.В.</copyright-holder><copyright-holder xml:lang="en">Bikaeva Y.V., Ibragimov R.A., Gimranov L.R., Korolev E.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://www.vestnikmgsu.ru/jour/article/view/816">https://www.vestnikmgsu.ru/jour/article/view/816</self-uri><abstract><sec><title>Введение</title><p>Введение. Одним из перспективных направлений развития строительного материаловедения является использование карбонатных материалов с невысоким содержанием оксида магния в качестве сырья для производства вяжущих и материалов на их основе. Актуальность применения фибрового армирования связана с необходимостью в значительной мере повысить физико-механические свойства стеклодоломитовых листов (СДЛ) на магнезиальном вяжущем. Введение полипропиленовой фибры позволит улучшить работу композиционного материала на изгиб, повысить трещиностойкость в процессе эксплуатации, снизить усадку при твердении. Цель исследования — определение оптимальной концентрации фибры и ее влияния на физико-механические свойства СДЛ.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Исследуемые материалы — СДЛ, получаемые путем смешивания обожженного доломита, водного раствора хлорида магния, добавок и фибрового армирования. Механическую активацию каустического доломита производили в аппарате вихревого слоя. Структура композита, морфология поверхности изучались с помощью электронной микроскопии. Оценка влияния параметров фибры на прочность модифицированных СДЛ выполнялась по смоделированной расчетной модели в программном комплексе Ansys.</p></sec><sec><title>Результаты</title><p>Результаты. Представлены результаты зависимости прочности при изгибе и плотности, пористости образцов от концентрации, длины полипропиленовых волокон. Определены предельные значения напряжений при изгибе, вертикальные перемещения контрольных составов, армированных фиброй на исходном и механоактивированном вяжущем. Введен индекс пластичности для сравнения пластических деформаций материала и рассчитана величина сцепления фибрового волокна с матрицей.</p></sec><sec><title>Выводы</title><p>Выводы. Установлено, что механомагнитная обработка магнезиального вяжущего в аппарате вихревого слоя способствует повышению предельной прочности на изгиб и остаточной прочности, повышает механические силы сцепления, а введение фибры исключает хрупкое разрушение образца.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. One of the promising areas for the development of construction materials is to use carbonated materials with a low magnesium oxide content as raw materials for the production of binders and the manufacture of materials based on them. The relevance of the application of fibreglass reinforcement is related to the need to significantly increase the physical and mechanical properties of fibreglass dolomite sheets from magnesia binder. The introduction of polypropylene fibres will improve bending performance of composite material, increase in-service crack resistance and reduce shrinkage during hardening. The aim of the study was to select the optimal fibre concentration and determine its influence on the physical and mechanical properties of glass fibre dolomite sheets.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. The materials studied are glass dolomite sheets obtained by mixing burned dolomite, water solution of magnesium chloride, additives and fibrous reinforcement. The mechanical activation of the caustic dolomite was produced in a vortex layer device. The structure of the composite and the surface morphology were investigated by electron microscopic analysis. The influence of fibre parameters on the strength of the reinforced sheet was evaluated by a designed calculation model in the Ansys software complex.</p></sec><sec><title>Results</title><p>Results. The results of the dependence of bending strength and specimen density on by concentration, length of polypropylene fibres are presented. The limit values of the stresses when bending, vertical movements of the unreinforced sheet, reinforced by fibres on the non-activated and mechanical activated binder are determined. A plasticity index for comparing the plastic deformations of the material was introduced and the value of fibre adhesion to the matrix was calculated.</p></sec><sec><title>Conclusions</title><p>Conclusions. It was established that the mechanical treatment of magnesium binder in a vortex layer device increases bending and residual strength, increases impact force, and the introduction of fibre prevents brittle fracture of the specimen.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>полипропиленовая фибра</kwd><kwd>каустический доломит</kwd><kwd>магнезиальный камень</kwd><kwd>фиброволокно</kwd><kwd>сцепление</kwd><kwd>индекс пластичности</kwd></kwd-group><kwd-group xml:lang="en"><kwd>polypropylene fibre</kwd><kwd>caustic dolomite</kwd><kwd>magnesia stone</kwd><kwd>fibre</kwd><kwd>adhesion</kwd><kwd>plasticity index</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена за счет гранта Российского научного фонда № 24-29-00524 (URL: https://rscf.ru/project/24-29-00524/).</funding-statement><funding-statement xml:lang="en">The work was carried out with a grant from the Russian Science Foundation № 24-29-00524 (URL: https://rscf.ru/project/24-29-00524/).</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Haque M.A., Dai J.G., Zhao X.L. 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