Research into the frost resistance of cast foam plastics in multilayer wall envelopes Natalia A. Emelyanova

Abstract

The possibility of using Poroplast CF02 cast composites under winter conditions as thermofillers for multilayer wall enclosures of residential and public buildings was investigated. The use of cast composites as a thermo-insulating component in multilayer enclosures has long been considered as a technologically convenient, functionally effective, and reliable solution. When organizing year-round construction works with the use of cast composites, the influence of ambient conditions (temperature and humidity) on the kinetics of thermal insulation parameters should be taken into account. It is thermal insulation that should be considered as an operational durability criterion. Cyclic T-W tests were conducted in accordance with standardized regulatory methods. A comparative assessment of the thermo-insulating parameters of Poroplast CF02 cast composite samples was performed under varied polymerization conditions and after cyclic freezing and thawing of different intensities. The results of experimental studies into the stability of the thermal characteristics of Poroplast CF02 cast insulators under the conditions simulating their work in multilayered enclosure structures of buildings in severe climate areas are presented. The conducted experimental study confirmed the stability of Poroplast CF02 cast insulators under different natural polymerization conditions. The determining role of environmental humidity on the kinetics of such insulators was demonstrated.