Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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MECHANICAL PROPERTIES OF COMPOSITE CONCRETES MODIFIED WITH CARBON NANOTUBES

Ilinykh I.A. 1 Burmistrov I.N. 1, 2 Mazov I.N. 1, 3 Kuznetsov D.V. 1 Yudintseva T.I. 1 Kuskov K.V. 1
1 National University of Science and Technology “MISIS”
2 Engels Technological Institute (branch)Saratov State Technical University of Yu. A. Gagarin
3 Boreskov Institute of Catalysis SB RAS
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In this work an analysis of influence of addition of hydrophilizedmultiwall carbon nanotubes on the properties of composite concrete materials. The mechanism of concrete reinforcement is discussed and optimal concentration of oxidized CNTs in concrete was established. It was shown that mechanical properties of composite concrete materials can be significantrly improved by addition of CNT with increase of mechanical strength by more than 110% and crack resistance more than by 80% as compared with pure concrete. Synergetic effect of increase of mechanical properties by addition of surfactant combined with CNTs was discovered. Optimal concentrations of CNTs in concrete was suggested. Investigated functional materials can be used for development of concretes for usage in special areas, such as highly-loaded constructions and buildings.