Study of influence of ash-slag mixture on drying properties of ceramic sample using regression analysis method
https://doi.org/10.33979/2073-7416-2024-113-3-113-122
Abstract
Numerous studies have shown that control and stabilization of drying, in which the amount of moisture is removed within 70%, in ceramic products is mainly due to the introduction of various absorbers into clay compositions, which increase the intermolecular distance between clay particles, as a result of which mechanically mixed water is removed. The purpose of the work: to study the effect of ash and slag mixture on drying indicators: plumbing, shrinkage and mechanical strength of a ceramic sample based on technogenic raw materials of non-ferrous metallurgy - GZI (clay part of the "tails" of gravity of zircon-ilmenite ores) using a regressive analysis method.
Task statement. Given the limited availability of high-quality raw materials in many regions of Russia, energy waste and non-ferrous metallurgy without the use of natural traditional raw materials were used to obtain ceramic samples. The inclusion of a non-shrinkable ash-slag mixture in the ceramic composition contributes to a more uniform distribution of moisture throughout the sample and then to its smooth removal during drying of the article. The ash and slag mixture must be added to the ceramic masses to reduce shrinkage during drying, increase moisture conductivity, but it must be borne in mind that the compression strength of the dried sample decreases. Increase of ash-slag mixture content in ceramic compositions reduces its plasticity. Increasing the content of ash and slag mixture to 32% reduces ductility to 9. Such plasticity in the formation of semi-finished products contributes to the appearance of cracks on them (the binding ability of the clay component decreases, which does not allow forming samples without defects). Optimal compositions for efficient drying of samples are those containing 20-24% ash and slag mixture. In this work, a regression analysis method was used, which makes it possible to select the necessary model equations that will help determine ceramic masses with effective properties and to predict results that were not included in the experiment.
About the Authors
V. Z. Abdrakhimov
Samara State University of Economics
Russian Federation
Russian Federation
Abdrakhimov Vladimir Zakirovich - Doctor of Technical Sciences, Professor (Professor of the Department "Land Management and Ecology") honorary worker of higher and professional education, honored worker of higher professional Education of the Samara region
Samara
D. V. Abdrakhimov
Samara State University of Economics
Russian Federation
Russian Federation
Abdrakhimov Dmitry Vladimirovich - student
Samara
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For citations:
Abdrakhimov V.Z., Abdrakhimov D.V. Study of influence of ash-slag mixture on drying properties of ceramic sample using regression analysis method. Building and Reconstruction. 2024;(3):113-122. (In Russ.) https://doi.org/10.33979/2073-7416-2024-113-3-113-122
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