Pre-calculation and design of equipment for electric heating of concrete mix

[摘要] The article considers methodological and fundamental aspects of the basic methods of calculating the equipment for electric preheating of a concrete mix in the technology of concreting structures in the cold season. Although the technology of electric preheating of the concrete mix has been known since the beginning of the 60s of the last century, until now there have been no adequate methods for designing and calculating the equipment to implement it. In the paper, authors classify the known methods for calculating the electric preheating of a concrete mix. They present the calculation method, which allows us to create high-quality and reliable equipment for the practical implementation of the considered method. Based on the similarity theory, the authors offer a generalized description of the heating process. The use of the resulting dimensionless dependence of the electric preheating parameters and its graphic interpretation allow one to continuously and visually control all the three groups of parameters (technological, design and electro technical) simultaneously.

[发布机构] Faculty of Civil Engineering, Novosibirsk State University of Architecture and Civil Engineering (Sibstrin), Leningradskaya Street, 113, Novosibirsk; 630008, Russia^1;Architectural and Construction Institute, South Ural State University, Lenin Avenue, 76, Chelyabinsk; 454080, Russia^2

[学科分类] 土木及结构工程学

[关键词] Cold season;Graphic interpretation;Heating process;High quality;Reliable equipment;Similarity theory