The deformation of the Rock wool board external thermal insulation system based on coupled temperature and relative humidity

International Conference on Manufacturing Technology, Materials and Chemical Engineering

材料科学;化学工业

Yang, Z.H.^1^2 ; Zhu, K.^2 ; Chen, X.^3^4 ; Jiang, W.^1^2

Key Laboratory of Advanced Civil Engineering Materials (Tongji University), Ministry of Education, 4800 Cao'an Road, Shanghai

201804, China^1

School of Materials Science and Engineering, Tongji University, 4800 Cao'an Road, Shanghai

201804, China^2

School of Aerospace Engineering and Applied Mechanics, Tongji University, Zhangwu Road, Shanghai

200092, China^3

College of Civil Engineering, Tongji University, 1239 Siping Road, Shanghai

200092, China^4

关键词: Climatic conditions;    External insulations;    External thermal insulation systems;    External thermal insulations;    Strain and stress;    Stress and strain;    Temperature and relative humidity;    Thermal insulation systems;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/592/1/012061/pdf
DOI  :  10.1088/1757-899X/592/1/012061

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A coupled heat and humidity transfer model of external thermal insulation wall is established. The effects of different climatic conditions (winter and summer) on the deformation of the rock wool board external insulation system were simulated and analyzed by the meteorological database from Shanghai. The results show that the changes of strain and stress are fluctuated because of the variation of temperature and relative humidity, and their extremum values appear with the extreme value of temperature and relative humidity difference. The coating mortar has the highest stress and strain, and the rock wool board has the lowest stress and strain. The maximum stress can reach 1.97×10-3MPa and the maximum strain can reach 1.36×10-4 of the rock wool thermal insulation system during the periodic changes in temperature and relative humidity within 72 hours in winter and summer.