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Peer-reviewedCC BY 4.0PLOS One

Compressive Performance of CFRP Ring-confined Circular LSCFST columns

  • Zhiping Deng1
  • Qiuyu Liu2
  • Yujiao Qin3
  • Caisen Wang4
  • Jiongfeng Liang5
  • Haizhong Zhang
5 affiliations
  1. 1Jiangxi Provincial Underground Engineering Risk Digital Monitoring and Control Research Center, East China University of Technology, Nanchang, China
  2. 2School of Civil & Architecture Engineering, East China University of Technology, Nanchang, China
  3. 3Nanchang Architecture Science Institute Co., Ltd., Nanchang, China
  4. 4College of Architecture and Civil Engineering, Beijing University of Technology, Beijing, China
  5. 5Eco-Science Course, Faculty of Agriculture, Yamagata University, Yamagata, Japan
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Abstract

To explore the disposal method of lithium slag (LS), 20 columns were tested with three parameters, LS replacement rate, carbon fiber reinforced polymer (CFRP) ring spacing, and CFRP layer number, respectively. The conclusion is that the lithium-slag concrete-filled steel tube (LSCFST) stub columns subjected to CFRP circumferential constraints undergo a progressive failure process, ultimately resulting in the steel tube bucking; By the increasing LS replacement rate, the bearing capacity of columns shows an uptrend, while their ductility deteriorates. And the columns with 20% of replacement rate show better load capacity than other specimens. Compared to ring spacing, the adding layers of CFRP has a greater enhancement on the bearing capacity and ductility of columns. Finally, an ultimate strength formula for columns is established and its accuracy is verified.

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Cite

BibTeXRIS
BibTeX
@article{deng2026compressive,
  title = {{Compressive Performance of CFRP Ring-confined Circular LSCFST columns}},
  author = {Zhiping Deng and Qiuyu Liu and Yujiao Qin and Caisen Wang and Jiongfeng Liang and Haizhong Zhang},
  journal = {PLOS One},
  year = {2026},
  month = sep,
  doi = {10.1371/journal.pone.0357309},
  url = {https://doi.org/10.1371/journal.pone.0357309},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Compressive Performance of CFRP Ring-confined Circular LSCFST columns
AU  - Zhiping Deng
AU  - Qiuyu Liu
AU  - Yujiao Qin
AU  - Caisen Wang
AU  - Jiongfeng Liang
AU  - Haizhong Zhang
PY  - 2026
DA  - 2026/09/08
JO  - PLOS One
DO  - 10.1371/journal.pone.0357309
UR  - https://doi.org/10.1371/journal.pone.0357309
AB  - To explore the disposal method of lithium slag (LS), 20 columns were tested with three parameters, LS replacement rate, carbon fiber reinforced polymer (CFRP) ring spacing, and CFRP layer number, respectively. The conclusion is that the lithium-slag concrete-filled steel tube (LSCFST) stub columns subjected to CFRP circumferential constraints undergo a progressive failure process, ultimately resulting in the steel tube bucking; By the increasing LS replacement rate, the bearing capacity of columns shows an uptrend, while their ductility deteriorates. And the columns with 20% of replacement rate show better load capacity than other specimens. Compared to ring spacing, the adding layers of CFRP has a greater enhancement on the bearing capacity and ductility of columns. Finally, an ultimate strength formula for columns is established and its accuracy is verified.
SN  - 1932-6203
ER  -