Abstract
The aim of the paper is to determine fine fractions content of mineral particles formed during the production of building materials. The production of concrete and reinforced concrete products is associated with the use of dispersed mineral substances in large quantities as aggregates. This is accompanied by dust emissions and, accordingly, air pollution. The efficiency of aspiration systems at enterprises is low due to the specifics of the location and operation of the equipment complex in space and time. Therefore, an attempt was made to develop a method for separating dust fractions when assessing the working area dustiness in the production of concrete and reinforced concrete products. Since the main method of assessing dust content is gravimetric, it is proposed to isolate the most dangerous dust particles for the human body when taking air samples with blocks by means of three filters from various filter materials. The performed calibration in laboratory conditions and measurements directly at the workplaces of LLC “Monolit-Yug” showed relatively small errors in air sampling and made it possible to estimate the total dust content and the proportion of fine dust fractions. The conducted research will be used for recommendations development to improve the efficiency of aspiration systems.
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