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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">ikbgu</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Кабардино-Балкарского государственного университета</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the Kabardino-Balkarian State University</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2221-7789</issn><publisher><publisher-name>Kabardino-Balkarian State University named after Kh. M. Berbekov</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31143/2221-7789-2023-1-119-124</article-id><article-id custom-type="edn" pub-id-type="custom">PIDKKT</article-id><article-id custom-type="elpub" pub-id-type="custom">ikbgu-236</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>Химия</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Chemistry</subject></subj-group></article-categories><title-group><article-title>О РОЛИ СЕРЫ КАК МОДИФИКАТОРА ПБВ ПРИ АНАЛИЗЕ КРИВЫХ ТЕЧЕНИЯ БИТУМНЫХ МАТЕРИАЛОВ</article-title><trans-title-group xml:lang="en"><trans-title>SULFUR AS A PMB MODIFIER ACCORDING TO THE RESULTS OF THE ANALYSIS OF THE FLOW CURVES OF BITUMEN MATERIALS</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>Шляпцева</surname><given-names>М. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Shlyaptseva</surname><given-names>M. D.</given-names></name></name-alternatives><email xlink:type="simple">maria.shlyaptseva@ya.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>Гордеева</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Gordeeva</surname><given-names>I. V.</given-names></name></name-alternatives><email xlink:type="simple">maria.shlyaptseva@ya.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>Горбатова</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Gorbatova</surname><given-names>V. N.</given-names></name></name-alternatives><email xlink:type="simple">maria.shlyaptseva@ya.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>Пшихачева</surname><given-names>М. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Pshikhacheva</surname><given-names>M. S.</given-names></name></name-alternatives><email xlink:type="simple">maria.shlyaptseva@ya.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>Зверева</surname><given-names>У. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Zvereva</surname><given-names>U. G.</given-names></name></name-alternatives><email xlink:type="simple">maria.shlyaptseva@ya.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Наумова</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Naumova</surname><given-names>Yu. A.</given-names></name></name-alternatives><email xlink:type="simple">maria.shlyaptseva@ya.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>МИРЭА-Российский технологический университет</institution></aff><aff xml:lang="en"><institution>MIREA – Russian Technological University»</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Федеральный исследовательский центр химической физики им. Н.Н. Семенова Российской академии наук</institution></aff><aff xml:lang="en"><institution>N.N. Semenov Institute of Chemical Physics, Russian Academy of Sciences</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ООО «ЛЛК-Интернешнл»</institution></aff><aff xml:lang="en"><institution>LLC «LLK-International»</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>31</day><month>03</month><year>2023</year></pub-date><volume>13</volume><issue>1</issue><fpage>119</fpage><lpage>124</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шляпцева М.Д., Гордеева И.В., Горбатова В.Н., Пшихачева М.С., Зверева У.Г., Наумова Ю.А., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Шляпцева М.Д., Гордеева И.В., Горбатова В.Н., Пшихачева М.С., Зверева У.Г., Наумова Ю.А.</copyright-holder><copyright-holder xml:lang="en">Shlyaptseva M.D., Gordeeva I.V., Gorbatova V.N., Pshikhacheva M.S., Zvereva U.G., Naumova Y.A.</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.izvestiakbsu.ru/jour/article/view/236">https://www.izvestiakbsu.ru/jour/article/view/236</self-uri><abstract><p>Построены и проанализированы кривые течения битумных композиций, модифицированных бутадиен-стирольным термоэластопластом (БСТЭП) отечественного производства в комбинации с серой полимерной. Выявлены закономерности совместного влияния системы модификаторов БСТЭП- сера на реологическое поведение дорожных битумных материалов. Определены реологические константы: коэффициент консистентности K и индекс течения n при температурах испытания 40, 60 и 80 оС на основании аппроксимации экспериментальных данных согласно уравнению Оствальда де Ваале. Выявлено, что процесс термостатирования образцов, содержащих серу, приводит к повышению показателя консистентности, что свидетельствует о протекании процессов структурирования в полимерно-битумном материале.</p></abstract><trans-abstract xml:lang="en"><p>The flow curves of bituminous compositions modified with domestically produced styrene-butadiene thermoplastic elastomer (BSTEP) in combination with gray polymer are constructed and analyzed. Regularities of the joint influence of the BSTEP-sulfur modifier system on the rheological behavior of road bitumen materi- als are revealed. The rheological constants were determined: the consistency coefficient K and the flow index n at test temperatures of 40, 60 and 80 °C based on the approximation of experimental data according to the Ostwald de Waale equation. It was found that the process of temperature control of samples containing sulfur leads to an increase in the consistency index, which indicates the occurrence of structuring processes in the polymer-bitumen material.</p></trans-abstract><kwd-group xml:lang="en"><kwd>polymer-bitumen compositions</kwd><kwd>flow curves</kwd><kwd>modifiers</kwd><kwd>sulfur</kwd><kwd>styrene-butadiene thermo- plastic elastomer</kwd><kwd>viscosity</kwd><kwd>rheology.</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">Гуреев А.А., Тюкилина П.М. 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