Thermo-Mechanical Properties of Perlite Composite

Currently, perlite is used in the insulation of facades, roofs, ceilings, based on perlite, heat-insulating plasters, masonry mortars, and even adhesive compositions are produced. However, practically not used as a monolithic-structural material. Expanding the production of heat-insulating perlite materials for various purposes will inevitably be allowed to reduce heat loss and the high cost of fuel. Perlite materials can improve the physical properties of existing structures. A significant advantage of the use of perlite as a heater is a reduction in a fire hazard and an increase in the fire resistance of building structures. The article presents the results of a study of the monolithic heat-insulating material based on expanded perlite of deposit "Fogosh" (Zakarpatskyi region, Ukraine) and liquid silicate sodium glass. The basic thermal, mechanical properties, and structures of this material and compliance with the standard are investigated. In this article, describe a complex of properties of new thermal insulation material that has: rho = 219 kg/m(3), lambda = 0.087 W/(m K), sigma(c) = 9.1 MPa. It is established that the investigated perlite composite according to its strength and thermal conductivity characteristics can be recommended as thermal insulation and structural material for thermal power equipment isolation.