satНАУКА и ТЕХНИКАScience & Technique2227-10312414-0392Belarusian National Technical Universitysat-294Research ArticleСТРОИТЕЛЬСТВО И АРХИТЕКТУРАCIVIL ENGINEERING AND ARCHITECTUREВЛИЯНИЕ МНОГОСЛОЙНЫХ НАНОТРУБОК НА РАЗРЫВНУЮ ПРОЧНОСТЬINFLUENCE OF MULTILAYER NANOTUBES ON FRACTURE TOUGHNESSХрусталевБ. М.KhroustalevB. M.

Академик НАН Беларуси, доктор технических наук, профессор

sat@bntu.byЛеоновичС. Н.LeonovichS. N.

Доктор технических наук, профессор

sat@bntu.byЭберхардштайнерЙ.EberhardsteinerJ.

Доктор наук, профессор

Институт механики материалов и конструкций

Institute for Mechanics of Materials and Structures

sat@bntu.byЯковлевГ. И.YakovlevG. I.

Доктор технических наук, профессор

sat@bntu.byПервушинГ. Н.PervushinG. N.

Доктор технических наук, профессор

sat@bntu.byБелорусский национальный технический университетБеларусьBelarusian National Technical UniversityBelarusВенский технический университетАвстрияVienna University оf TechnologyAustriaИжевский технический университет, Ижевск, РоссияРоссияIzhevsk State Technical University, Izhevsk, RussiaRussian Federation201210082012045257Copyright © Хрусталев Б.М., Леонович С.Н., Эберхардштайнер Й., Яковлев Г.И., Первушин Г.Н., 20122012Хрусталев Б.М., Леонович С.Н., Эберхардштайнер Й., Яковлев Г.И., Первушин Г.Н.Khroustalev B.M., Leonovich S.N., Eberhardsteiner J., Yakovlev G.I., Pervushin G.N.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://sat.bntu.by/jour/article/view/294

Представлены результаты экспериментальных исследований коэффициентов интенсивности напряжений при нормальном отрыве КIC и поперечном сдвиге КIICвысокопрочного бетона. Проведены исследования изменения удельных энергозатрат на квазистатическое разрушение.

Изучена структура бетона на основе портландцемента, модифицированного с помощью углеродных нанодисперсных систем. В качестве модификаторов используются углеродные нанотрубки Graphistrength фирмы Arkema, которые диспергировались в гидродинамической установке с раствором поверхностно-активного компонента «Полипласт СП-1». В ходе исследований наблюдалось увеличение прочности на изгиб мелкозернистого бетона до 45,1 %, прочности на сжатие – до 96,8 %. Увеличение прочности бетона связано с морфологическими изменениями, происходящими в новых  образованиях кристаллогидратов, которые характеризуются менее дефектной структурой бетонной матрицы с высокой плотностью.

 

Experimental research results of the stress intensity factor at normal separation, КIC, and cross-section shift, KIIC, respectively, of high-strength concrete are presented. Research on the specific power changing inputs on quasi-static destruction is carried out.

The compact structure on the basis of the Portland cement modified with carbon nanodispersed systems has been studied. Carbon nanotubes Graphistrength by «Arkema» dispersed into the hydrodynamic plant in the solution of surface-active agent (SAA) Polyplast SP-1 are used as modifying additives. An increase of the cross-breaking strength of a fine grain concrete up to 45,1 % and of the compressing strength up to 96,8 % was observed. The increase of concrete strength is related to morphological changes of new crystalline hydrate formations providing a less defective structure of cement matrix with high density.

 

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The authors declare that there are no conflicts of interest present.