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HIGH-MG-SILICATE ROCK-BASED HEAT-INSULATING AND FACING BUILDINGMATERIALS FROMKARELIA
Abstract
A considerable progress in industrial construction and civil engineering makes it necessary to increase the production and application of new heat-insulating materials based on accessible environmentally safe mineral products. The mineral composition and structural characteristics of KareliaпїЅs natural raw materials are favourable for the production of ceramic heat-insulating materials with required properties and characteristics such as porous structure, low density, low thermal conductivity and high strength. The materials can be widely used in industrial construction and civil engineering for heating buildings and insulating the hot surfaces of various equipment, e.g. furnaces, fireplaces, fire boxes and pipelines, to intensify high-temperature processes and to save fuel. A rock of talc-carbonate-chloritic composition is easy to process, displays excellent thermal physical properties, is a good building and facing refractory material, has a high heat capacity, is rapidly heated and cools down slowly. The results of the testing of heat-insulating building materials, based on Karelian high- Mg-silicate rocks, such as soapstone, tremolite and serpentinite, are reported in the present paper.
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