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作者:

Yuan, Wan-Ying (Yuan, Wan-Ying.) | Han, Qiang (Han, Qiang.) (学者:韩强) | Bai, Yu-Lei (Bai, Yu-Lei.) (学者:白玉磊) | Du, Xiu-Li (Du, Xiu-Li.) (学者:杜修力) | Yan, Zhi-Wei (Yan, Zhi-Wei.)

收录:

SCIE

摘要:

A combination of core engineered cementitious composite (ECC) and external fiber-reinforced polymer (FRP) composites can solve the problems of insufficient ductility and durability of normal concrete (NC) in adverse environments and improve bearing capacity. However, existing studies on the performance of ECC strengthened by FRP are very limited-particularly the research on large rupture strain (LRS) FRP-confined ECC. In this study, an experimental investigation of LRS FRP and conventional glass FRP-confined ECC cylinders with different confinement levels under axial compression is presented. It is found that the application of external FRP jackets leads to a significant improvement in the compressive strength and deformation of the core ECC. LRS FRP-confined ECC exhibits a higher ultimate deformation than conventional FRP-confined ECC. The dilation behavior, axial stress-strain behavior, and energy dissipation capacity between FRP-confined ECC and FRPconfined NC under the same confinement level are compared, and the former exhibits a significantly larger ductility and energy dissipation capacity than the latter. The results also indicate that most existing models are unable to accurately predict the compressive behavior of FRP-confined ECC. To address this, a dilation model and an axial stress-strain model of FRP-confined NC are modified to extend their application to FRPconfined ECC.

关键词:

Compressive behavior Confinement Engineered cementitious composite (ECC) Fiber-reinforced polymer (FRP) Large rupture strain (LRS)

作者机构:

  • [ 1 ] [Yuan, Wan-Ying]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 2 ] [Han, Qiang]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 3 ] [Bai, Yu-Lei]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 4 ] [Du, Xiu-Li]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 5 ] [Yan, Zhi-Wei]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China

通讯作者信息:

  • 韩强 白玉磊

    [Han, Qiang]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China;;[Bai, Yu-Lei]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China

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来源 :

COMPOSITE STRUCTURES

ISSN: 0263-8223

年份: 2021

卷: 272

6 . 3 0 0

JCR@2022

ESI学科: MATERIALS SCIENCE;

ESI高被引阀值:8

被引次数:

WoS核心集被引频次: 28

SCOPUS被引频次: 30

ESI高被引论文在榜: 0 展开所有

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中文被引频次:

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