Steel and Composite Structures
Volume 52, Number 2, 2024, pages 121-134
DOI: 10.12989/scs.2024.52.2.121
Axial compressive behavior of partially encased recycled aggregate concrete stub columns after exposure to high temperatures
Jiongfeng Liang , Wanjie Zou , Liuhaoxiang Wang , Wei Li
Abstract
To investigate the compressive behavior of partially encased recycled aggregate concrete (PERAC) stub columns after exposed to elevated temperatures, 22 specimens were tested. The maximum temperature suffered, the replacement ratio of recycled coarse aggregate (RCA), the endurance time and the spacing between links were considered as the main parameters. It was found that the failure mode of post-heated PERAC columns generally matched that of traditional partially encased composite (PEC) columns, but the flange of specimens appeared premature buckling after undergoing the temperature of 400°C and above. Additionally, the ultimate strength and ductility of the specimens deteriorated with the elevated temperatures and extended heating time. When 400°C
Key Words
axial compressive; high temperature; partially encased composite; recycled aggregate concrete
Address
- Jiongfeng Liang — Faculty of Civil&Architecture Engineering, East China University of Technology, Nanchang, China
- Wanjie Zou — College of Civil and Architecture Engineering, Guangxi University of Science and Technology, Liuzhou, China
- Liuhaoxiang Wang — College of Architecture and Civil Engineering, Beijing University of Technology, Beijing, 100124, China
- Wei Li — 1)College of Civil and Architecture Engineering, Wenzhou University, Wenzhou, China 2)Key Laboratory of Engineering and Technology for Soft Soil Foundation and Tideland Reclamation of Zhejiang Province, 276 Yuanzhong Road, Wenzhou, P.R. China
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