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作者:

Bai, Yulei (Bai, Yulei.) | Huang, Jun (Huang, Jun.) | Zhang, Yufeng (Zhang, Yufeng.) | Mei, Shijie (Mei, Shijie.)

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EI Scopus SCIE

摘要:

The combination of environmentally friendly large rupture strain fiber-reinforced polymers (LRS FRPs) and recycled fine and coarse aggregates presents a promising alternative to overcome the scarcity of natural river sand and natural gravels. Recycled aggregate concrete (RAC) can obtain sufficient ductility and strength by the confinement of LRS FRPs, and these two green materials are particularly suited to sustainable construction. However, existing research on LRS FRP-confined RAC is very limited and primarily focused on small-scale specimens. The objective of this paper is to investigate the axial compression performance of large-scale steelreinforced RAC square columns wrapped with LRS FRP and promote the practical application of this sustainable structural system. The experimental variables include the effective confinement stiffness ratio (rho k,eff) and the type of LRS FRP (i.e., polyethylene naphthalate (PEN) FRP and polyethylene terephthalate (PET) FRP). Test results showed that the application of RAC had a negligible effect on the axial compression behavior of large-scale LRS FRP-confined square columns. The behavior of the test columns was primarily influenced by rho k,eff. Finally, evaluations were conducted on the existing models of LRS FRP-confined concrete with square cross-sections, based on the compilation of available test results from large-scale specimens.

关键词:

Square column Large rupture strain (LRS) FRP Axial compression Large-scale Recycled aggregate concrete

作者机构:

  • [ 1 ] [Bai, Yulei]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 2 ] [Huang, Jun]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 3 ] [Zhang, Yufeng]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 4 ] [Mei, Shijie]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China

通讯作者信息:

  • [Zhang, Yufeng]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China

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来源 :

ENGINEERING STRUCTURES

ISSN: 0141-0296

年份: 2024

卷: 305

5 . 5 0 0

JCR@2022

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SCOPUS被引频次: 7

ESI高被引论文在榜: 0 展开所有

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