Cross validation of hygrothermal properties of historical Chinese blue bricks with isothermal sorption experiments

• 作者: Yonghui Li Yan Ma Huarong Xie Jiaomin Li Xinjian Li
• 来源期刊: 建筑学研究前沿（英文版）
• 年，卷（期）: 2021,（1）
• 页码范围: 164-175
• 页数: 12页
• 语种: 英文

摘要

The historical,cultural,and social value of heritage buildings mandates special protection of these structures.Blue brick is one kind of the main construction materials of her-itage buildings,which is porous material and easily subject to deterioration due to environ-mental factors such as humidity.Therefore,determining the dynamic moisture content rule of materials under fluctuant ambient humidity is necessary for preventative conservation.This study measured the equilibrium moisture content of eight types of Chinese blue bricks under isothermal conditions with varying humidity levels.The results show that when ambient hu-midity increased from 10％to 90％,the moisture sorption of historical Chinese blue bricks tripled,which is 3 times greater than that of modern Chinese blue bricks and 10(at low humid-ity)to 20 times(at high humidity)greater than that of clay bricks in the international hand-book.The results contribute to the improvement of the international building material database and research related to hygrothermal performance of heritage buildings in East Asia.