Thermal Bridge Effect of Aerated Concrete Block Wall in Cold Regions

2017 3rd International Conference on Environmental Science and Material Application

生态环境科学;材料科学

Li, Baochang^1 ; Guo, Lirong^2 ; Li, Yubao^1 ; Zhang, Tiantian^2 ; Tan, Yufei^2

Heilongjiang College of Construction, Harbin

150090, China^1

Northeast Forestry University, Harbin

150090, China^2

关键词: Aerated concrete;    Aerated concrete blocks;    Construction technique;    Efficiency requirements;    Frost heaving;    Heat transfer calculations;    Research outputs;    Thermal bridge;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/108/2/022041/pdf
DOI  :  10.1088/1755-1315/108/2/022041

来源: IOP

【 摘 要 】

As a self-insulating building material which can meet the 65 percent energy-efficiency requirements in cold region of China, aerated concrete blocks often go moldy, frost heaving, or cause plaster layer hollowing at thermal bridge parts in the extremely cold regions due to the restrictions of environmental climate and construction technique. L-shaped part and T-shaped part of aerated concrete walls are the most easily influenced parts by thermal bridge effect. In this paper, a field test is performed to investigate the scope of the thermal bridge effect. Moreover, a heat transfer calculation model for L-shaped wall and T-shaped wall is developed. According to the simulation results, the temperature fields of the thermal bridge affected regions are simulated and analyzed. The research outputs can provide theoretical basis for the application of aerated concrete wall in extremely cold regions.