Study of clay raw materials with Korolek technogenic waste for the production of ceramic bricks

Abstract

The use of industrial waste in the production of building materials is an urgent task at present. Studies on the use of mineral wool waste in the manufacture of ceramic bricks have been carried out. For the preparation of experimental samples of ceramic bricks used clay deposit, as heaters and intensifiers of sintering – waste production of mineral wool. Chemical composition of investigated components is given. The study of mineralogical and phase composition of raw materials was carried out by petrographic, X-ray phase, IR-spectroscopic, electron-microscopic methods of analysis and DTA. During the experiment such properties of samples as cracking temperature; end shrinkage moisture; relative shrinkage; drying time to residual moisture content of 8%; mechanical strength in compression were tested. As a result of the tests, the influence of Korolek on the drying properties of ceramic samples was established. Thus, an increase in the content of Korolek in the samples, improved the crack resistance, relative shrinkage, drying time to residual moisture. The results of the research showed a non-linear dependence of physical and mechanical properties of the samples on the content of Korolek. The best values of mechanical strength were achieved when the Korolek content was 40% of the total mass of the manufactured sample. The proposed composition corresponds to the properties of ceramic bricks above grade M150-175.