Compressive Performance of CFRP Ring-confined Circular LSCFST columns

Zhiping Deng, Qiuyu Liu, Yujiao Qin, Caisen Wang, Jiongfeng Liang and Haizhong Zhang

PLOS ONE, 2026, vol. 21, issue 9, 1-21

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.

Date: 2026
References: Add references at CitEc
Citations:

Downloads: (external link)
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0357309 (text/html)
https://journals.plos.org/plosone/article/file?id= ... 57309&type=printable (application/pdf)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0357309

DOI: 10.1371/journal.pone.0357309

Access Statistics for this article

More articles in PLOS ONE from Public Library of Science
Bibliographic data for series maintained by plosone ().