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Regulation of Electrical, Thermal and Physical Properties of Composites Based on Carbon-Modified Portland Cement Materials

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Abstract:

The article discusses aspects of the production and use of composites based on carbon-filled cement matrices. It is shown that the main problem in the technology of such composites is the regulation of the processes of structure formation and uniform distribution of the electrically conductive phase throughout the volume, to ensure stable electrical characteristics of the material. A method for solving the problem of improving the physical, mechanical and thermal properties of carbon-filled Portland cement composites by regulating the surface properties of carbon fillers, in order to reduce their concentration in the composite and the content of the aqueous phase, is proposed. It is shown that the modification of the carbon filler surface using the water-repellent agent PMS-20 reduces the adhesion work at the interface, which makes it possible to reduce the concentration of the electrically conductive phase in the composite and improve its physical, mechanical and thermal characteristics.

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Periodical:

Solid State Phenomena (Volume 299)

Pages:

264-269

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.299.264

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Online since:

January 2020

Authors:

K.V. Tikhomirova, A.Yu. Semeykin*

Keywords:

Carbon, Composite, Electrical Conduction, Graphite, Hydrophobicity, Portland Cement, Wetting

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© 2020 Trans Tech Publications Ltd. All Rights Reserved

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* - Corresponding Author

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