| Title |
An Experimental Study of Water Vapor Pressure that occurs at the Interface of a Fluid-Applied Membrane by Exterior Temperature |
| Authors |
Ko Jin-Soo ; Lee Sung-Bok ; Shin Yun-Ho ; Mun Jung-O ; Yun Jung-Woon |
| Keywords |
Fluid-applied Membrane ; Water Vapor Pressure ; Air Pockets |
| Abstract |
Over 30% of the total defects that have occurred recently in the Korean construction market are caused by the construction of defective waterproofing, and the phenomenon of air pockets in the waterproofing layer, which is caused by the concrete vapor pressure, is known to be the primary cause of defective waterproofing.
Accordingly, in this study the theory about the relationship between water pressure and temperature as well as the damp-proofing volume of concrete and, then, the change of vapor pressure volume were measured and analyzed by making a test sample after spraying a dampness remover and a waterproofing material to a prepared specimen.
As a result of measuring the water vapor pressure for the surface temperature of the waterproofing layer with the fluid-applied membrane temperature based on about 10℃, which is the average temperature of Seoul, it was found that first, the fluid-applied membrane elevated up to about 40℃, and the water vapor pressure generated from the fluid-applied membrane was about 0.3㎏f/㎠ when the surface temperature of the waterproofing layer was raised up to about 80℃.
Second, when the fluid-applied membrane temperature of the waterproofing layer was raised from 30℃ to 35℃, about 0.1㎏f/㎠ of water vapor pressure was generated, and when supplying a thermal source to raise the fluid-applied membrane temperature of the waterproofing layer from 35℃ to 40℃, approximately 0.05㎏f/㎠ of water vapor pressure was generated. |