Experimental Comparison of Construction Material Vapor Permeability in Case of Horizontal or Vertical Sample Position

International Multi-Conference on Industrial Engineering and Modern technologies

Zubarev, K.P.^1 ; Gagarin, V.G.^2

Department of Heat and Gas Supply and Ventilation, Moscow State University of Civil Engineering, Yaroslavskoye Shosse, 26, Moscow

129337, Russia^1

Research Institute of Building Physics, Russian Academy of Architecture and Construction Science, Moscow

127238, Russia^2

关键词: Coefficient values;    Experimental comparison;    Measuring height;    Relative air humidities;    Sample position;    Section capacity;    Test materials;    Vapor permeability;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/463/3/032082/pdf
DOI  :  10.1088/1757-899X/463/3/032082

来源: IOP

【 摘 要 】

The paper proposes a device for vapor permeability coefficient determination in case of vertical sample position. The device is a L-type section capacity with a window in upper part of long side of the capacity. A test sample of construction material is positioned vertically and sealed in the window. The capacity has built-in relative air humidity sensors distributed along capacity height. These sensors allow measuring height-average relative air humidity. Experimental vapor permeability coefficient values, obtained by means of the proposed device and by means of well-known wet cup method, have been compared. Rock wool has been used as a test material. As a result, wet cup method has been confirmed for vapor permeability coefficient determination for vertical enclosing structures.