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author:

Chen, W. (Chen, W..) [1] | Feng, K. (Feng, K..) [2] | Wang, Y. (Wang, Y..) [3] | Cui, S. (Cui, S..) [4] | Lin, Y. (Lin, Y..) [5]

Indexed by:

Scopus

Abstract:

A novel precast beam–column joint using shape memory alloy fibers-reinforced engineered cementitious composites (SMA-ECC) was proposed in this study to achieve self-repairing of cracks and internal damage after an earthquake. Three large-scale beam–column joints were tested under displacement reversals, including one monolithically cast conventional concrete joint, one engineered cementitious composites (ECC) reinforced precast concrete joint, and one SMA-ECC reinforced precast concrete joint. Failure mode, crack pattern, hysteretic behavior, stiffness degradation, displacement ductility, and energy dissipation capacity were compared and evaluated through a cyclic loading test. The test results showed that the ECC-based (ECC, SMA-ECC) precast joints have equivalent seismic properties to the monolithically cast concrete joint. ECC-based joints enhanced the ductility and energy dissipation capacity of the joint and, remarkably, reduced crack width. The SMA-ECC reinforced joint also exhibited instant self-healing in terms of the closure of small cracks after unloading. The self-healing performance was further evaluated through ultrasonic pulse tests, with the results showing that the use of SMA-ECC material was efficient in reducing the internal damage of beam–column joints after an earthquake. © 2022 by the authors.

Keyword:

beam–column joints engineered cementitious composites seismic performance self-repairing ultrasonic pulse test

Community:

  • [ 1 ] [Chen, W.]College of Civil Engineering, Fuzhou University, Fuzhou, 350108, China
  • [ 2 ] [Feng, K.]College of Civil Engineering, Fuzhou University, Fuzhou, 350108, China
  • [ 3 ] [Wang, Y.]College of Civil Engineering, Fuzhou University, Fuzhou, 350108, China
  • [ 4 ] [Cui, S.]School of Civil Engineering, Fujian University of Technology, Fuzhou, 350118, China
  • [ 5 ] [Lin, Y.]College of Civil Engineering, Fuzhou University, Fuzhou, 350108, China

Reprint 's Address:

  • [Wang, Y.]College of Civil Engineering, China

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Source :

Buildings

ISSN: 2075-5309

Year: 2022

Issue: 9

Volume: 12

3 . 8

JCR@2022

3 . 1 0 0

JCR@2023

ESI HC Threshold:66

JCR Journal Grade:2

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 10

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 6

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