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<article xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="https://jats.nlm.nih.gov/publishing/1.1/" xml:lang="ru" article-type="research-article" dtd-version="1.1" specific-use="eps-0.1">
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				<journal-id journal-id-type="publisher-id">asa</journal-id><journal-title-group>
			<journal-title xml:lang="ru">Строительство и техногенная безопасность</journal-title></journal-title-group>			<issn pub-type="ppub">2413-1873</issn>			<publisher><publisher-name>КФУ им. В.И. Вернадского</publisher-name></publisher>
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			<article-id pub-id-type="doi">10.29039/2413-1873-2025-37-67-75</article-id><article-id pub-id-type="publisher-id">281</article-id>
			<article-categories><subj-group xml:lang="en"><subject>Engineering support</subject></subj-group><subj-group xml:lang="ru"><subject>Инженерное обеспечение</subject></subj-group></article-categories>
			<title-group><article-title xml:lang="ru">МОДИФИКАЦИЯ ЦЕМЕНТНОЙ МАТРИЦЫ ВЫСОКОДИСПЕРСНЫМ ПОРОШКОМ ОКСИДА ВОЛЬФРАМА WO3, ОБЛАДАЮЩИМ ФОТОКАТАЛИТИЧЕСКИМИ СВОЙСТВАМИ</article-title><trans-title-group xml:lang="en"><trans-title>MODIFICATION OF THE CEMENT MATRIX WITH A HIGHLY DISPERSED WO3 TUNGSTEN OXIDE POWDER WITH PHOTOCATALYTIC PROPERTIES </trans-title></trans-title-group></title-group>
			<contrib-group content-type="author">
				<contrib contrib-type="author">
					<contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2009-5812</contrib-id>
<name-alternatives>					<name>
						<surname>Гавриш</surname>
						<given-names>В. М.</given-names>
					</name>
					<name xml:lang="en">
						<surname>Gavrish</surname>
						<given-names>V. M.</given-names>
					</name>
</name-alternatives>					<xref ref-type="aff" rid="aff-1"/>
				</contrib>
				<contrib contrib-type="author">
<name-alternatives>					<name>
						<surname>Чайка</surname>
						<given-names>Т. В.</given-names>
					</name>
					<name xml:lang="en">
						<surname>Chayka</surname>
						<given-names>T. V.</given-names>
					</name>
</name-alternatives>					<xref ref-type="aff" rid="aff-2"/>
				</contrib>
				<contrib contrib-type="author">
<name-alternatives>					<name>
						<surname>Корсак</surname>
						<given-names>Д. В.</given-names>
					</name>
					<name xml:lang="en">
						<surname>Korsak</surname>
						<given-names>D. V.</given-names>
					</name>
</name-alternatives>					<xref ref-type="aff" rid="aff-3"/>
				</contrib>
				<contrib contrib-type="author">
<name-alternatives>					<name>
						<surname>Чайка</surname>
						<given-names>А. К.</given-names>
					</name>
					<name xml:lang="en">
						<surname>Chayka</surname>
						<given-names>A. K.</given-names>
					</name>
</name-alternatives>					<xref ref-type="aff" rid="aff-4"/>
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			<aff id="aff-1">
			<institution content-type="orgname">Севастопольский государственный университет</institution>
			<institution content-type="orgname" xml:lang="en">Sevastopol State University</institution>
			</aff>
			<aff id="aff-2">
			<institution content-type="orgname">Севастопольский государственный университет</institution>
			<institution content-type="orgname" xml:lang="en">Sevastopol State University </institution>
			</aff>
			<aff id="aff-3">
			<institution content-type="orgname">Севастопольский государственный университет </institution>
			<institution content-type="orgname" xml:lang="en">Sevastopol State University </institution>
			</aff>
			<aff id="aff-4">
			<institution content-type="orgname">Санкт-Петербургский горный университет</institution>
			<institution content-type="orgname" xml:lang="en">St. Petersburg Mining University</institution>
			</aff>
			<pub-date date-type="pub" publication-format="electronic">
				<day>30</day>
				<month>06</month>
				<year>2025</year>
			</pub-date>
				<issue seq="7">37(89)</issue><issue-id>92</issue-id><fpage>67</fpage>
				<lpage>75</lpage>
			<permissions>
				<copyright-statement>Copyright (c) 2025 Строительство и техногенная безопасность</copyright-statement>
				<copyright-year>2025</copyright-year>
				<copyright-holder>Строительство и техногенная безопасность</copyright-holder>
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			<self-uri>https://www.stroyjurnal-asa.ru/index.php/asa/article/view/281</self-uri>
			<abstract><p>Аннотация. В статье приведены результаты исследования фотокаталитической активности при видимом свете, высокодисперсного порошка оксида вольфрама WO3, полученного в результате рециклинга твердосплавных изделий. Выполнен микроструктурный анализ порошка оксида вольфрама с использованием сканирующей электронной микроскопии (SEM) до и после процесса фотокатализа. Представлены результаты испытаний физико-механических свойств (плотность, прочность при сжатии, водопоглощение, общая пористость) цементной матрицы с различным содержанием порошка WO3 (1–5 масс. %). Проведен предварительный анализ модифицированной поверхности на самоочищающиеся свойства.</p>
<p>Предмет исследования: Цементная матрица, модифицированная фотокатализатором на основе высокодисперсного порошка оксида вольфрама WO3.</p>
<p>Материалы и методы: В качестве фотокатализатора применяли высокодисперсный порошок оксида вольфрама (средний размер частиц 40 до 200 нм). Фотокаталитическая активность порошка WO3 оценивалась путем определения степени деструкции модельного органического загрязнителя метиленового синего с концентрацией 15 мг/л методом фотометрического анализа раствора с помощью прибора «Эксперт 003» при длине волны 654 нм. Микроструктура порошка оксида вольфрама исследовалась на сканирующем электронном микроскопе PHENOM proX. Для изготовления цементных матриц с фотокатализатором использовали портландцемент ЦЕМ II/A-П 42,5Н СС. Физико-механические свойства цементных образцов определяли по стандартным методикам ГОСТ 30744-2001, ГОСТ 30744-2001.</p>
<p>Результаты: Результаты исследования показали, что фотокаталитическая активность порошка оксида вольфрама возрастает с увеличением его концентрации в растворе и времени облучения видимым светом. Максимальная деградация 89 % красителя, наблюдается при добавлении 5,0 г/л порошка WO3, через 180 мин после начала реакции. Добавление порошка оксида вольфрам в цементную матрицу приводит к увеличению плотности, прочности на сжатие, снижению водопоглощения и общей пористости. Визуальный анализ обесцвечивания органического красителя на поверхности модифицированной цементной матрицы предположительно связан со способностью поверхности к самоочищению благодаря фотокаталитическим свойствам оксида вольфрама.</p>
<p>Выводы: Использование высокодисперсного порошка оксида вольфрама в цементных матрицах имеет большой потенциал для создания самоочищающихся строительных материалов с улучшенными физико-механическими свойствами, а также способностью разлагать загрязняющие органические вещества под воздействием видимого света.</p></abstract><trans-abstract xml:lang="en"><p>The paper presents the results of the study of photocatalytic activity under visible light of highly dispersed tungsten oxide powder WO3 obtained as a result of recycling of carbide products. Microstructural analysis of the tungsten oxide powder using scanning electron microscopy (SEM) before and after the photocatalysis process was performed. Test results of physical and mechanical properties (density, compressive strength, water absorption, total porosity) of cement matrix with different content of WO3 powder (1-5 wt.%) are presented. Preliminary analysis of the modified surface for self-cleaning properties was carried out.</p>
<p>Subject: Cement matrix modified by photocatalyst based on highly dispersed tungsten oxide powder WO3.</p>
<p>Materials and methods: Highly dispersed tungsten oxide powder (average particle size 40 to 200 nm) was used as a photocatalyst. Photocatalytic activity of WO3 powder was evaluated by determining the degree of degradation of model organic pollutant methylene blue with a concentration of 15 mg/L by photometric analysis of the solution using the device “Expert 003” at a wavelength of 654 nm. The microstructure of tungsten oxide powder was investigated on a PHENOM proX scanning electron microscope. Portland cement CEM II/A-P 42.5H SS was used for the fabrication of cement matrices with photocatalyst. Physical and mechanical properties of cement samples were determined according to standard methods of GOST 30744-2001, GOST 30744-2001.</p>
<p>Results: The results showed that the photocatalytic activity of tungsten oxide powder increases with increasing its concentration in solution and time of irradiation with visible light. The maximum degradation of 89% dye, was observed when 5.0 g/l WO3 powder was added, 180 min after the start of the reaction. Addition of tungsten oxide powder to cement matrix leads to increase in density, compressive strength, decrease in water absorption and total porosity. Visual analysis of organic dye discoloration on the surface of the modified cement matrix is presumably related to the self-cleaning ability of the surface due to the photocatalytic properties of tungsten oxide.</p>
<p>Conclusions: The use of highly dispersed tungsten oxide powder in cement matrices has great potential to create self-cleaning building materials with improved physical and mechanical properties as well as the ability to decompose polluting organic substances under the influence of visible light.</p></trans-abstract><kwd-group xml:lang="ru"><title>Ключевые слова</title><kwd>фотокатализ, высокодисперсный порошок, триоксид вольфрама, цементный материал, самоочищение, прочность</kwd></kwd-group><counts><page-count count="9"/></counts>
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