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Studies have shown that in order to obtain a glazed ceramic material with increased heat resistance, it is necessary that the value of the TEC for the ceramic material be no more than 1.50 - 1.55 & # 37; TCLE of glaze. It was found that as a result of the liquation of glass in the glaze enriched with silica, there is a division into 3-4 regions. The liquidation structure decreases markedly at temperatures of 700 and 950 ° C. The liquation temperature range is a function of the heat treatment conditions of the glaze
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Investigations of the effect of fly ash generated from the incineration of municipal solid waste on the properties, durability and environmental toxicity of fired luminosilicates are presented. In the manufacture of aluminosilicates, fly ash was introduced into the charge in an amount of 2.5 - 7.5 & # 37;, the firing temperature of the products was 1000 & # 176; C, isothermal holding for 1 hour. Studies have shown that the introduction of 2.5 & # 37; addition of fly ash to aluminosilicates ensures the leaching of heavy metals, sulphates and chlorides in accordance with the current regulation 2003/33 / EC. The density of such fired aluminosilicates is 1.8 g / cm
3 , compressive strength 24MPa, water absorption 15.3 & # 37;, total open porosity 31 & # 37;, frost resistance at least 25 freeze and thaw cycles
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The size of the fraction of ground glass as the main component has a decisive influence on the quality of building products made of foam glass concrete. This indicates the need to ensure a given size of fraction for a certain type of product and the ability to quickly influence the process of grinding technogenic cullet.
For this purpose, a diagram of an adaptive vibration mill has been developed, equipped with an electronic-hydraulic control system that allows you to quickly change the technological mode of grinding, depending on the starting material and the required fraction of ground glass
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An overview of domestic and foreign studies on the use of ash and slag waste from thermal power plants as raw materials in the production of foam glasses and glass-crystalline foams is presented. It is shown that in a number of cases the use of waste leads to an improvement in the properties of materials.
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The possibility of using (2.5 - 10 & # 37; by weight) wastes from the production of paraffin wax (OPP) in the production of porous ceramics has been investigated. Additive 2.5 & # 37; OPP increases the compressive strength of the ceramic. Increase in OPP to 10 & # 37; significantly increases the apparent porosity of the ceramic
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Hits: 9074
Technologies have been developed for the manufacture of slabs and porous aggregate from cellular glass based on ash and slag waste from Novocherkasskaya SDPP, as well as structural and heat-insulating lightweight concrete. On their basis, three-layer energy-efficient panels were obtained for use in frame-panel housing construction.
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Hits: 10542
The composition and method of obtaining highly porous materials at low-temperature swelling of liquid glass and ash-and-slag material from the combustion of oil shale, used as a filler and burnout additive, are proposed. It has been shown that expanded clay based on water glass must be cooled at a rate of 60 ° C / min, since at such a cooling rate, a porous material with a high coefficient of structural quality and with the highest FeO content is formed.
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Hits: 10862
Compositions and technological parameters of the synthesis of cellular glass based on ash and slag waste from the Novocherkasskaya SDPP (heat-insulating layer of a multilayer silicate composite heat-insulating and decorative material) have been developed. The physicochemical regularities of the high-temperature formation of the structure of the porous heat-insulating layer of a multilayer silicate composite heat-insulating-decorative material by the methods of DTA, XRD and electron microscopy have been established.
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Hits: 10823
A significant effect of the amount of aluminum-containing nanotechnogenic raw materials based on non-ferrous metallurgy and pyrophyllite on the structural and rheological properties of ceramic masses for the production of acid-resistant materials is shown. The use of nanotechnogenic raw materials improves the physical and mechanical properties of ceramics for acid-resistant materials. Studies have shown that the presence of isometric pores and oval closed porosity, in contrast to elongated (slot-like) pores in ceramic materials, impart mechanical strength to them.
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An affordable energy-saving technology of glass-ceramic facing tiles that imitates the texture and main technical parameters of granite has been developed and tested in the laboratory: water absorption less than 1 & # 37;, compressive strength 60 - 70 MPa. Raw mix includes 70 & # 37; mixed irreversible glass breakage. The technological process is distinguished by a high degree of self-sufficiency and flexibility
