Indicators of the Technology of Manufacturing Products from Arbolite with the Use of Electric Heat Treatment

Оne of the promising directions of scientific and technological progress in the construction industry is the use of arbolites, i.e. concrete products and structures containing organic fillers. The introduction of additives into concrete, characteristic of Russia, in the form of flax and hemp bonfires, allows you to obtain material and building structures from it that have positive qualities: increased thermal insulation properties of enclosing structures, the ability to regulate relative humidity in the building, the presence of a negative carbon footprint, etc. A serious obstacle to the widespread use of arbolite with these additives are the difficulties of using heat and moisture treatment (MT) in the process of manufacturing building products and structures made of such material. Due to the low thermal conductivity of the material, it is necessary to increase the duration of MT for guaranteed heating of the material throughout the entire volume of products. As a result, the already low energy efficiency of the MT is further reduced, and the cost of finished construction products and structures increases significantly. An effective way to overcome this obstacle, as previously performed studies show, is the use of electrothermal treatment (ETT) of products made of arbolite with high-frequency currents by the electrode method. Using ETT allows you to ensure uniform heating of the product due to the passage of electric current directly into the volume of concrete with minimal energy consumption and its cost. The performed and presented estimates show that the effect of the use ETT of high-frequency currents in the manufacture of products made of arbolite with a filler in the form of flax and hemp is significantly higher than in the manufacture of products made of heavy types of structural concrete. This is due to a reduction in energy costs for electric heating by at least 3 times, respectively, the electrical power required to perform ETT is also reduced. It is also shown that due to the smaller mass of arbolite products with such a filler, a reduction in labor costs and construction time is expected.

S.V. FEDOSOV, Doctor of Sciences (Engineering), Academician of RAASN,
A.A. LAPIDUS, Doctor of Sciences (Engineering),
A.M. SOKOLOV, Doctor of Sciences (Engineering),
D.A. SARKISOV, Engineer, SAMIR FARAUN, Engineer,
S.L. ISACHENKO, Engineer (This email address is being protected from spambots. You need JavaScript enabled to view it.)

National Research Moscow State University of Civil Engineering (26, Yaroslavskoe Highway, Moscow, 129337, Russian Federation)

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