Abstract
Approximately half of the total energy consumed in the world is used for heating buildings and structures. Therefore, it is quite logical that an important component of almost all national long-term development pro-grams focused on the world economy of fuel and energy resources is to ensure the most effective thermal insulation of heating systems and enclosing structures of the new buildings. The use of carbamide cellular plastics as heat insulation of buildings enclosing structures and the requirements of regulatory documents on the parameters of acceptable air permeability determine the need for an experimental determination of their resistance to air penetration. The purpose of experimental studies of air permeability indicators forcar-bamide cellular plastics is to establish numerical values and to identify patterns of their changes depending on the density of the studied material, which to varying degrees will affect the total indicator of normalised resistance to air penetration of multilayer enclosing structures. An experimental and analytical evaluation of the studied indicators of air permeability of different density of carbamide cellular plastics was performed. This consists in an innovative heat-insulating product constructed directly on the objects under construction using high-performance generating plants and monolithically stacked to ensure thermal protection of enclos-ing structures. The study presents the experimental data on the air permeability of carbamide cellular plas-tics of various densities, which is connected with their use as thermal protection of enclosing structures of the building envelope. The newly obtained data on the air permeability of carbamide cellular plastics with different density values, provided by TU-2254-002-16602333-02, make it possible to evaluate the satisfacto-riness of multilayer enclosing structures to normalised indicators of resistance to air penetration in accord-ance with the regulatory document "SP 50.13330.2012 – Thermal protection of buildings. Updated version of SNiP 23-02-2003".
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