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Author:

Yan, Zhi-Wei (Yan, Zhi-Wei.) | Bai, Yu-Lei (Bai, Yu-Lei.) (Scholars:白玉磊) | Ozbakkaloglu, Togay (Ozbakkaloglu, Togay.) | Gao, Wan-Yang (Gao, Wan-Yang.) | Zeng, Jun-Jie (Zeng, Jun-Jie.)

Indexed by:

EI Scopus SCIE

Abstract:

This paper presents an experimental study on the impact performance of concrete columns confined with largerupture-strain (LRS, tensile rupture strain >= 5%) fiber reinforced polymer (FRP) jackets. A total of 32 concrete specimens were prepared and tested using large-capacity drop-weight equipment. The test variables included four impact heights (2, 3, 4 and 5 m), three types of FRP, i.e., aramid FRP (AFRP), polyethylene naphthalate (PEN) FRP and polyethylene terephthalate (PET) FRP and two layers of FRP jackets (1 and 2). The time histories of impact force and FRP rupture strain as well as failure modes were obtained from the test. Compared to the AFRP-confined concrete specimen with similar jacket stiffness, the core concrete of the LRS FRP-confined specimen was less damaged due to the large-rupture-strain characteristic. The impact force increased and the impact duration decreased with increasing impact height. The impact duration of concrete specimens confined with LRS FRP was longer than that of the AFRP-confined concrete column. Results showed that the impactresistance behaviours of LRS FRP-confined concrete column outperformed its companion column confined with AFRP. Besides, increasing the thickness of FRP jacket can enhance the impact resistance capacity. These findings may facilitate the impact resistance strengthening/retrofitting of RC structures with the application of LRS FRP composites.

Keyword:

LRS FRP-confined concrete Failure mode Impact resistance Drop-weight

Author Community:

  • [ 1 ] [Yan, Zhi-Wei]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 2 ] [Bai, Yu-Lei]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 3 ] [Ozbakkaloglu, Togay]Texas State Univ, Ingram Sch Engn, Civil Engn, San Marcos, TX 78666 USA
  • [ 4 ] [Gao, Wan-Yang]Shanghai Jiao Tong Univ, State Key Lab Ocean Engn, Shanghai, Peoples R China
  • [ 5 ] [Zeng, Jun-Jie]Guangdong Univ Technol, Sch Civil & Transportat Engn, Guangzhou, Peoples R China

Reprint Author's Address:

  • 白玉磊

    [Bai, Yu-Lei]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China;;[Ozbakkaloglu, Togay]Texas State Univ, Ingram Sch Engn, Civil Engn, San Marcos, TX 78666 USA

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Source :

COMPOSITE STRUCTURES

ISSN: 0263-8223

Year: 2021

Volume: 276

6 . 3 0 0

JCR@2022

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:116

JCR Journal Grade:1

Cited Count:

WoS CC Cited Count: 22

SCOPUS Cited Count: 21

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 6

Affiliated Colleges:

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