Open AccessThermal physical properties estimation of high-rise building fencing construction
Author(s) -
L. V. Haponova,
S. S. Hrebenchuk
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/708/1/012050
Subject(s) - condensation , moisture , humidity , environmental science , fencing , air layer , meteorology , thermal , thermal insulation , materials science , atmospheric sciences , layer (electronics) , composite material , geology , geography , computer science , parallel computing
Presentation and realization of according to the calculations, it is established that the process of water vapor condensation occurs in the three-layer structure of the outer wall for three months: December, January, February. The condensed moisture evaporates in the other months of the year. The increase in material humidity in the thickness of the structure in which moisture condensation can occur during the cold season is estimated. In this case, the layer is moistened because it is adjacent to the condensation zone on the inner surface of the wall by Δ w =1.05%. The estimated increase in the construction material humidity in the cold season Δ w =2.2%, exceeds the allowable for thermal insulation characteristics. Also, the distribution of fencing construction partial pressures at an outside air temperature of -23°C indicates moisture accumulation on almost the entire surface of the structure. Numerical implementation was carried out with the development of a constructive solution: the proposed air layer with the mandatory layer ventilation provision (convective air exchange). For this reason, given the inertia of the combined concrete wall, it is permissible to decide on the need for the wall interior of aerated concrete blocks.