Foamed Polymers in Insulation Systems for Structures Constructed on Problematic Soils

The article presents the results of studies of the properties of insulating materials, as well as their application in insulation systems of constructions on pile foundations, including in permafrost soils. The development of insulation systems was based on the features of constructions on pile foundations, the features of insulation materials, as well as temperature, humidity and atmospheric conditions of operation of insulated objects. The necessity of developing special solutions for the creation of insulating shells having high heat engineering uniformity and durability, as well as resistant to negative and alternating temperatures, is substantiated. An important factor is also the lack of air infiltration channels that occur during the docking of structural elements. Especially important is the consideration of this factor for buildings operating at stable negative temperatures and high wind loads. For construction in regions with unstable atmospheric characteristics, a comprehensive account of the heat, moisture, and vapor barrier properties of the insulation shell is required. It is established that insulation materials should have not only low thermal conductivity, vapor and water permeability, but also resistance in aggressive environments. Foamed plastics, namely products based on extruded polystyrene foam, polyisocyanurate foam and polyethylene foam, are most suitable for this contraction to the highest degree. Based on the research results, the article suggests constructive and technical solutions for the formation of a seamless insulating sheath of pile structures built on problematic soils and in adverse climatic conditions, including in the conditions of the Arctic.

А.D. ZHUKOV¹, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
I.V. BESSONOV², Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
L.K. BOGOMOLOVA², Candidate of Sciences (Chemistry),
N.A. IVANOVA², Engineer,
I.S. GOVRYAKOV², Technician

¹ National Research Moscow State University of Civil Engineering (26, Yaroslavskoe Highway, Moscow, 129337, Russian Federation)
² Research Institute of Building Physics of the Russian Academy of Architecture and Construction Sciences (21, Lokomotivniy Driveway, Moscow, 127238, Russian Federation)

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