Design of Internal Insulation of Enclosing Structures in the Adaptation of Historical Buildings Taking into Account Durability

Abstract

In the process of designing works on reconstruction, adaptation and renovation, paramount importance is given to ensuring the durability of structures. As a result of the processes of destruction, the structure of the material of the exterior walls of historical buildings changes, the resistance to heat transfer decreases. In these conditions, it is necessary to provide thermal protection taking into account the durability of the enclosing structures. For this purpose, fences with a heat-insulating permeable layer are used from the side of the room (internal insulation). At the same time, the alternating load on the material of the outer (historical) layer of the enclosing structure changes significantly. The article presents a method for assessing the cyclic load taking into account the parameter of the temperature load on the material, which allows you to link the climatic characteristics of the outdoor air - the temperature change due to climate change and the change in the number of cycles of temperature transition through zero with the characteristics of the enclosing structure: thickness,  hermophysical and physicochemical parameters of the construction material. This technique is included in SP 345.1325800.2017 "Residential and public buildings. Rules for the design of thermal protection".