|
Title |
Experiment for Air Leakage Rate Evaluation of Cracked Reinforced Concrete
|
|
Authors |
이유상(Yousang Lee) ; 박홍근(Hong-Gun Park) |
|
DOI |
https://doi.org/10.4334/JKCI.2024.36.2.157 |
|
Keywords |
철근 콘크리트; 균열; 공기 유동; 투기성 reinforced concrete; cracks; air flow; air permeability |
|
Abstract |
A quantitative assessment of air flow rate is required for infrastructure where its airtight performance is crucial. In this study, a test was conducted to assess the air leakage rate of cracked reinforced concrete elements. A hollow beam specimen was designed to withstand pressures up to 200 kPa, employing a relatively simple set-up for airtight pressure test. While the bottom flange was subjected to tension cracking under transverse loading, air pressure was applied into the air chamber of the beam, and the air leakage rate was measured as the magnitude of loading was increased. The test variables included plate thickness and reinforcement ratio. The test results showed that the leakage rate was proportional to the pressure difference and the cube of the average crack width, and was inversely proportional to plate thickness and reinforcement ratio.
|