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International Conference on Innovative Applied Energy    

E-Proceedings ISBN: 978-1-912532-05-6

St Cross College, University of Oxford, United Kingdom

  


 

The use of surface energy of nanoparticles to produce high-strength armor concrete

 


 

Anastasia Sychova (1), Larisa Svatovskaya (2) and Maxim Sychov (3)

1. Military Space Academy , St.Petersburg 13 Zhdanovskaya st, Russia

2. Emperor Alexander I St. Petersburg State Transport University, Russia

3. Saint-Petersburg State Institute of Technology, Russia

 

  

Paper Abstract

The article investigates and substantiates the idea that nanomaterials used for the activation of cement hardening processes can be considered as an independent source of energy. Nanoparticles are known to have tremendous excess surface energy which they tend to release into the environment because of their instability. Getting into the cement system, such surface energy activates the processes of its hardening. Together with the nature of nanoparticles and their ability to interact with the components of the cement, the input energy leads to the maximum realization of the cement hardening reserve, which is confirmed by the data of the derivatographic analysis. Such activation leads to the additional strength and hardness development and consequently results in the high-strength concrete. It is shown that such an effect is possible with the impregnation of the concrete surface with sols (colloidal solutions based on SiO2 nanoparticles). It is recommended to begin the impregnation since the third day of the hardening under normal conditions, because it is at this age that the most part of the heat of their exothermic reaction which takes place during the cement hardening has already been released to the environment. At this moment, it is possible to introduce the additional surface energy, which in accordance with the Le Chatelier's principle will not cause a shift in the equilibrium in the direction of slowing down the cement hardening processes. Then the range of surface energy within which the activation of the hardening processes takes place is given. A comparison of the technology of surface hardening of concrete and the technology of nanoparticles introduction at the initial moment of concrete components mixing when the heat energy of the exothermic process is intensively released is presented. It is shown that the efficiency of the surface treatment of concrete with SiO2 Sol is maximum. The calculation of the criterion of the concrete armor protection which shows that the resulting concrete has the similar properties with such well known materials as armor ceramics and armor steel is given. A comparison of the proposed method of using the surface energy of nanoparticles with the processes using other energy sources (galvanic element, electrolysis, heat and humidity treatment and electric heating of concrete) is shown. We have come to the conclusion that the proposed use of surface energy of nanoparticles will considerably save natural energy resources. 

Paper Keywords
Surface energy of nanoparticles, high-strength concrete, armor concrete, SiO2 Sol, surface treatment of concrete.
Corresponding author Biography

Sychova A. M.

Year of birth: 1973

Education:

-1990-1996 St. Petersburg Institute of technology, specialty chemical technology of inorganic substances.

-2000- award of the degree of Ph.D.

-2010 – award of the degree of D.Sc.

Work: 1996-2016 g-Petersburg state University of railway engineering

2016 to the present time Military space Academy named after A. F. Mozhaisky

Family status: married, son 6 years

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The International Conference on Innovative Applied Energy (IAPE’18)