About Characteristics Of Dust Stands Out In The Air At Production Of Concrete Products

[摘要] The article is devoted to the issue of the dust content of the air in the working area of enterprises producing reinforced concrete products. This article considers the main characteristics of dust that is released during the production of reinforced concrete products. The results of analysis of particulate dust including finely dispersed PM10 and PM2.5, taken from the air in the working area of the technological areas of the concrete mixing section, are obtained, the functions of distributing the mass of dust particles along the diameters selected at different technological sites are obtained. According to the Lyashchenko and Reynolds criteria, theoretical values of the dust settling rate in a stationary medium are calculated. The experimental values of the sedimentation rate of the evolved dust are given. The obtained results of investigation of dust deposition rates allowed estimating the difference in values for theoretical and experimental investigation, and the obtained dust characteristics are the initial data for the organization of ventilation schemes at enterprises of this type.

[发布机构] Architecture of Buildings and Structures, Institute of Architecture and Civil Engineering of Volgograd State Technical University, Lenin avenue 28, Volgograd; 400005, Russia^1;Construction of Unique Buildings and Structures, Don State Technical University, Gagarin square 1, Rostov-on-Don; 344000, Russia^2;Life Safety in Construction and Urban Management, Institute of Architecture and Civil Engineering of Volgograd State Technical University, Lenin avenue 28, Volgograd; 400005, Russia^3

[关键词] Dust characteristics;Dust particle;Dust settling;Experimental investigations;Experimental values;PM10 and PM2.5;Sedimentation rates;Theoretical values