Identification of technological risks in the production of dry building mixtures

Technological risks during the production of dry building mixtures can lead to product defects. The purpose of this article is to assess and manage these risks to reduce the defect rate of finished products. We examine the influence of raw material quality and the state of the technological production process on the probability of defects. Dry mixtures CemPLAST, Bundes Koroed B2, and Bundes Koroed C3 from the New MIX company (Penza) were analyzed, using various raw materials: Sengileyevskiy CEM I 42.5B and Haldenberg CEM I 42.5N cement. It was established, that using cement with lower variability in its activity index in the formulation contributes to reducing the risk of defective dry building mixtures. The quality assurance of dry mixtures with varying ratios of the mean square deviation within the tolerance field was demonstrated. The values for producer and consumer risks were calculated based on the technological process state during the production of dry building mixtures. For unstable and non-reproducible processes, these risks accounted for 0.195847 and 0.139404, respectively. A risk assessment map for the production of dry building mixtures was developed. Each stage of the production process was analyzed in terms of risk probability and severity of consequences (assessed on a five-point scale). Risk levels were calculated, and risk management measures were proposed. It was determined that the highest severity of consequences is associated with raw material acceptance (high – 4 points), dosing (critical – 5 points), and component mixing (high – 4 points). The quantitative assessment of risk levels for these stages ranged from 8 to 10, indicating an average level.

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