Mechanical properties of engineered cementitious composites exposed to elevated temperatures

被引：0

作者：

Shang, Xing-Yan ^{[1
]}

Lu, Zhou-Dao ^{[1
]}

机构：

[1] Research Institute of Structural Engineering and Disaster Reduction, Tongji University, Shanghai, China

来源：

Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment | 2015年 / 36卷 / 05期

关键词：

Pore size - Compression testing - Temperature;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Residual mechanical properties of engineered cementitious composites (ECC) exposed to elevated temperatures were studied. The ECC specimens were heated to different temperatures (200, 400, 600 and 800) for different time (0.5, 1 and 2 h) and then compression tests were conducted on the specimens after cooling in air. The results show that the residual strength and stiffness of the ECC generally decrease with the increasing temperature and heating duration except for the case of 200 temperature exposure. The MIP test was used to measure pore structures of the ECC specimens. It is found that the total intruded porosity and average pore size increase with the increasing temperature and heating duration except for the case of 200 temperature exposure, which well explains the residual mechanical property changes of the ECC specimens after exposure to elevated temperatures. ©, 2015, Editorial Office of Transactions of Materials and Heat Treatment. All right reserved.

引用

页码：24 / 28