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作者:

Yuan, Wanying (Yuan, Wanying.) | Han, Qiang (Han, Qiang.) | Bai, Yulei (Bai, Yulei.) (学者:白玉磊) | Song, Yanchen (Song, Yanchen.) | Zhan, Qiang (Zhan, Qiang.)

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EI Scopus SCIE

摘要:

The reliable design of the high-performance column made of fiber reinforced polymer (FRP)-confined engineered cementitious composites (ECC) necessitates a clear understanding of the size effect under axial compression. This paper presents the compressive behaviors of glass FRP (GFRP) and large rupture strain (LRS) polyethylene terephthalate (PET) FRP-confined ECC columns. The specimen size, confinement level, and FRP type were the variables. Five diameters of 100, 200, 300, 400, and 500 mm were designed to cover a wide size range. Results showed that both the compressive strength and ductility of ECC were substantially improved with FRP confinement. Compared with GFRP-confined ECC, PET FRP-confined ECC exhibited higher ductility. The key stresses, namely initial peak stress, post-peak ravine stress, and ultimate stress decreased with increasing spec-imen size. Nevertheless, the specimen size had a marginal influence on the key strains and dilation behavior. After evaluating the existing size-dependent ultimate strength models of FRP-confined concrete, a new expres-sion for predicting the ultimate strength of FRP-confined ECC was introduced, which was shown to fit well with the test results.

关键词:

Fiber reinforced polymer (FRP) Engineered cementitious composites (ECC) Compressive behavior Size effect Size -dependent model

作者机构:

  • [ 1 ] [Yuan, Wanying]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, Yulei]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 4 ] [Song, Yanchen]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 5 ] [Zhan, Qiang]Beijing Univ Technol, Beijing Municipal Bridge Maintenance Management Gr, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China

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来源 :

CONSTRUCTION AND BUILDING MATERIALS

ISSN: 0950-0618

年份: 2022

卷: 348

7 . 4

JCR@2022

7 . 4 0 0

JCR@2022

ESI学科: MATERIALS SCIENCE;

ESI高被引阀值:66

JCR分区:1

中科院分区:1

被引次数:

WoS核心集被引频次:

SCOPUS被引频次: 11

ESI高被引论文在榜: 0 展开所有

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