New issues - Известия Казанского государственного архитектурно-строительного университета.

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First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address.Mukhametrakhimov Rustem Khanifovich candidate of technical sciences, associate professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Galautdinov Albert Radikovich candidate of technical sciences, senior lecturer E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kazan State University of Architecture and Engineering The organization address: 420043, Russia, Kazan, Zelenaya st., 1 Garafiev Ajnur Maratovich head of team of expert examination and testing department E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it LLC PII «Centr ekspertiz i ispytanij v stroitel’stve» The organization address: 420097, Russia, Kazan, Shmidta st., 1
Title of the articleElectric curing of concrete using conductive mineral
Abstract.Problem statement. Hydration and evaporation of water during electric curing of concrete leads to an increase in its electrical resistance and the cost of electricity. Further heating becomes difficult and ineffective in achieving curing period corresponding to achieved 40% of the compressive strength of concrete. Increasing the efficiency of electric curing of concrete is relevant in this regard. Solving this problem will improve the quality of concrete structures and reduce energy costs while cold weather concreting. The authors propose to modify the composition of the concrete mix with a small amount of a conductive mineral – shungite. The goal of this work is to study the effect of ground schungite on the performance indicators of electrode heating of concrete (concretemix temperature, electrical resistance and concrete strength) during cold weather concreting. Results. It has been established that the modification of concrete mix with ground schungite leads to low electrical resistance of concrete with increasing temperature compared to unmodified composition in the first day of heating. It is shown that the introduction of shungite into the concrete mix in an amount of 1 % by weight of cement does not lead to a significant change in the kinetics of heat release of the cement binder, indicating an increase in the temperature of the concrete mixture during electric curing of concrete due to the conductive mineral shungite. Conclusions. The significance of the results for the construction industry is to increase the efficiency of electric curing of concrete using conductive mineral shungite and the possibility of reducing material costs in cold weather concreting.
Keywords.cold weather concreting, electric curing of concrete, concrete, conductive mineral, shungite.
For citations:Mukhametrakhimov R.Kh., Galautdinov A.R., Garafiev A.M. Electric curing of concrete using conductive mineral // Izvestiya KGASU. 2019. №4(50) P.418-426.


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