Smart composite in construction Smart composite in construction Умные композиты в строительстве 2782-1919 82652 10.52957/27821919_2022_2_45 Строительные материалы и изделия Construction materials and products Строительные материалы и изделия Study of Biostability of Concretes Исследование биостойкости бетонов Логинова Светлана Андреевна Loginova Svetlana Andreevna Ярославский государственный технический университет Yaroslavl State Technical University 25 06 2022 25 06 2022 3 2 45 53 09 03 2022 22 03 2022 https://chemintech.ru/en/nauka/article/82652/view

Проблема коррозионной деструкции строительных конструкций, несмотря на существующие научные и инженерные достижения в этой области, не теряет своей актуальности. Целью исследования являлось определение степени воздействия различных видов микроорганизмов на физико-механические свойства бетона. Оценка возможности бетона служить субстратом для различных видов биодеструкторов проводилась с помощью определения влагопоглощения и рН вытяжки из проб образцов бетона. В результате был экспериментально установлен механизм воздействия различных микроорганизмов на бетон. Определен таксономический состав наиболее агрессивных к бетону микроорганизмов. Проведена оценка влияния биообрастания на физико-механические свойства бетона. Результаты исследования служат основой для подбора наиболее эффективных методов антикоррозионной защиты бетонных конструкций, эксплуатирующихся в биологически агрессивных средах.

The problem of corrosion destruction of building structures, despite the existing scientific and engineering achievements in this area, does not lose its relevance. The purpose of the study is to determine the degree of impact of various types of microorganisms on the physical and mechanical properties of concrete. We carry out the assessment of the possibility of concrete to serve as a substrate for various types of biodestructors by determining the moisture absorption and pH of the extract of the concrete samples. As a result, we experimentally determine the mechanism of action of various microorganisms on concrete. Also we define the taxonomic composition of the most aggressive microorganisms for concrete. During the study we assess the effect of biofouling on the physical and mechanical properties of concrete. The results of the study serve as a basis for the selection of the most effective corrosion protection methods for concrete structures operated in biologically aggressive environments.

 бетон деструкция микроорганизмы водопоглощение коррозия concrete destruction microorganisms water absorption corrosion

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