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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">Construction Materials</journal-id><journal-title-group><journal-title xml:lang="en">Construction Materials</journal-title><trans-title-group xml:lang="ru"><trans-title>Строительные материалы</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0585-430X</issn><issn publication-format="electronic">2658-6991</issn><publisher><publisher-name xml:lang="en">Stroymaterialy</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">690203</article-id><article-id pub-id-type="doi">10.31659/0585-430X-2025-838-8-32-36</article-id><article-categories><subj-group subj-group-type="toc-heading"><subject>Статьи</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">Hydration of Calcium Sulphate Hemihydrate: Review and Analysis of Reaction Description Models</article-title><trans-title-group xml:lang="ru"><trans-title>Гидратация полугидрата сульфата кальция: обзор и анализ моделей описания реакции</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Araslankin</surname><given-names>S. V.</given-names></name><name xml:lang="ru"><surname>Арасланкин</surname><given-names>С. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>CEO</p></bio><bio xml:lang="ru"><p>генеральный директор</p></bio><email>ceo@sci-exp.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Nipruk</surname><given-names>O. V.</given-names></name><name xml:lang="ru"><surname>Нипрук</surname><given-names>О. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Doctor of Sciences (Chemistry)</p></bio><bio xml:lang="ru"><p>д-р хим. наук</p></bio><email>nipruk@chem.unn.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Buryanov</surname><given-names>A. F.</given-names></name><name xml:lang="ru"><surname>Бурьянов</surname><given-names>А. Ф.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Doctor of Sciences (Engineering)</p></bio><bio xml:lang="ru"><p>д-р техн. наук</p></bio><email>rga-service@mail.ru</email><xref ref-type="aff" rid="aff3"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Exponenta LLC</institution></aff><aff><institution xml:lang="ru">ООО «Экспонента»</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Lobachevsky State University of Nizhny Novgorod</institution></aff><aff><institution xml:lang="ru">Нижегородский государственный университет им. Н.И. Лобачевского</institution></aff></aff-alternatives><aff-alternatives id="aff3"><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="2025-09-09" publication-format="electronic"><day>09</day><month>09</month><year>2025</year></pub-date><issue>8</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>32</fpage><lpage>36</lpage><history><date date-type="received" iso-8601-date="2025-09-08"><day>08</day><month>09</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-09-08"><day>08</day><month>09</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025,</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, ООО РИФ "СТРОЙМАТЕРИАЛЫ"</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">ООО РИФ "СТРОЙМАТЕРИАЛЫ"</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2027-09-09"/></permissions><self-uri xlink:href="https://journals.eco-vector.com/0585-430X/article/view/690203">https://journals.eco-vector.com/0585-430X/article/view/690203</self-uri><abstract xml:lang="en"><p>A review and critical analysis of kinetic models describing the CaSO<sub>4</sub> · 0.5H<sub>2</sub>O hydration process is presented. Special attention is paid to their application to describe experimental data obtained by the conductometric method. Based on the analysis, it was found that stochastic models taking into account the probabilistic aspects of hydration demonstrate the highest compliance degree to the experiment. This allows to draw a reasonable conclusion on the advantages of the stochastic approach in describing complex physico-chemical processes characterized by a significant uncertainty degree. The analysis of the existing kinetic models of calcium sulfate hemihydrate hydration revealed their limitations in relation to real conditions. Traditional deterministic models based on chemical kinetic equations are not able to adequately consider random fluctuations occurring at the microscopic and molecular structural levels. This paper shows that stochastic models have significant advantages in describing complex processes such as CaSO<sub>4</sub> · 0.5H<sub>2</sub>O hydration.</p></abstract><trans-abstract xml:lang="ru"><p>Представлен обзор и критический анализ кинетических моделей, описывающих процесс гидратации CaSO<sub>4</sub> · 0,5H<sub>2</sub>O. Особое внимание уделено их применению для описания экспериментальных данных, полученных кондуктометрическим методом. На основе проведенного анализа установлено, что стохастические модели, учитывающие вероятностные аспекты гидратации, демонстрируют наиболее высокую степень соответствия эксперименту. Это позволяет сделать обоснованный вывод о преимуществах стохастического подхода при описании сложных физико-химических процессов, характеризующихся значительной степенью неопределенности. Анализ существующих кинетических моделей гидратации полугидрата сульфата кальция выявил ограничение их применения в реальных условиях. Традиционные детерминированные модели, основанные на уравнениях химической кинетики, не способны адекватно учесть случайные флуктуации, возникающие на микроскопическом и молекулярном структурных уровнях. В настоящей работе показано, что стохастические модели обладают значительными преимуществами при описании таких сложных процессов, как гидратация CaSO<sub>4</sub> · 0,5H<sub>2</sub>O.</p></trans-abstract><kwd-group xml:lang="en"><kwd>calcium sulphate hemihydrate</kwd><kwd>hydration</kwd><kwd>kinetic model</kwd><kwd>conductometry</kwd><kwd>stochastic approach</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>полугидрат сульфата кальция</kwd><kwd>гидратация</kwd><kwd>кинетическая модель</kwd><kwd>кондуктометрия</kwd><kwd>стохастический подход</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Polak A.F., Babkov V.V., Andreeva E.P. 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