Construction and insulation of agricultural buildings and structures

Abstract

The article covers different application aspects of the products made of polyethylene foam within the scope of insulation systems of framed and frameless constructions used in the quality of storage premises, logistic objects, agricultural storage facilities and livestock facilities as well as framed residential buildings. Agricultural storage facilities, livestock facilities, covered parking areas for agricultural machinery and some types of storage premises represent the agricultural construction facilities which require the established protection systems against excessive heat losses as well as monitoring of the state of the internal environment - its temperature and humidity. These structures are built based on one of three schemes: frameless type, framed type with a rigid coating and framed type with a tent coating. The insulation of buildings constructed before 2010 is predominantly characterized by usage of mineral wool plates (with a protective facade covering) or sandwich panels. The main problem of suchlike coverings is the impossibility of creating an insulating coating without joints, seams or gapless junctions to the base. Mineral wool plates, in case of destruction of the waterproof coating, contact with water and firstly lose their thermal and physical properties, and then – come to the destruction themselves. Sandwich panels are more resistant to weather impacts, but create a coating with huge quantity of cold bridges and paths of convective air transfer through gaps or openings.

Modification of Cellulosic Materials with Boron-Nitrogen Compounds

“…The presence of oxygen in the "atmosphere" of pores also adversely affects the rot resistance of the material; moreover, oxygen as an oxidant accelerates the processes of rot damage and, in the case of fire exposure, creates favorable conditions for combustion [10][11][12]. Because open communicating porosity prevails in fibrous materials and it is impossible to isolate internal volumes from environmental contacts, the main way to improve the resistance of high-porous fibrous materials, including those based on cellulose, is to modify the properties of the matrix, i.e., the fibrous component [13,14].…”

Modified Polyethylene Foam for Critical Environments

“…The change of properties is carried out by introducing cross-linking and foaming reagents (dicumyl peroxide and azodicarbonamide, their analogues with lower toxicity, as well as azodicarbonamide, etc.). The introduction of mineral and (or) organic fillers is practised [ 18 , 19 , 20 ].…”