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Author:

Li, Zhijian (Li, Zhijian.) | Wang, Li (Wang, Li.) | Ma, Guowei (Ma, Guowei.)

Indexed by:

EI Scopus SCIE

Abstract:

Sufficient reinforcement is crucial for three-dimensional (3D) printed concrete structures. In this study, continuous and simultaneous micro-cable reinforcing methods are investigated to accommodate the 3D flexible and automatic characteristics of additive manufacturing processes, and to satisfy the mechanical-property requirements for construction applications. Different manufacturing-related micro-reinforcements and printing configurations are designed for 3D printing cable-geopolymers. The specimens were subjected to three different types of loading conditions (compressive, shear, and tensile) to gain a better understanding of the composite behavior. The results revealed interesting behaviors: under compressive loadings, the confinement effect of the micro-cables is fundamental in producing additional strength, ductility, and toughness. The print path must be considered for determining the confinement levels. Micro-cables increase the compressive strength by 50.0% in a certain print path. The shear strength depends primarily on the geopolymer weak planes' directions between two filaments instead of the embedded cable reinforcements. The tensile response is primarily governed by the micro-cable reinforcements and the configurations, which depend on the print paths. In certain configurations, the micro-cables result in 158% and 43.8 times increase in tensile strength and strain, respectively. This study provides valuable insights into the behavior of 3D-printed geopolymer composites with micro-cable reinforcement, which is necessary for designing and manufacturing complex structures using this novel reinforcement method.

Keyword:

Mechanical property Continuous micro-cable reinforcement Geopolymer composite 3D concrete printing

Author Community:

  • [ 1 ] [Li, Zhijian]Hebei Univ Technol, Sch Civil & Transportat Engn, 5340 Xiping Rd, Tianjin 300401, Peoples R China
  • [ 2 ] [Wang, Li]Hebei Univ Technol, Sch Civil & Transportat Engn, 5340 Xiping Rd, Tianjin 300401, Peoples R China
  • [ 3 ] [Ma, Guowei]Hebei Univ Technol, Sch Civil & Transportat Engn, 5340 Xiping Rd, Tianjin 300401, Peoples R China
  • [ 4 ] [Li, Zhijian]Beijing Univ Technol, Coll Architecture & Civil Engn, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 5 ] [Ma, Guowei]Beijing Univ Technol, Coll Architecture & Civil Engn, 100 Pingleyuan, Beijing 100124, Peoples R China

Reprint Author's Address:

  • [Wang, Li]Hebei Univ Technol, Sch Civil & Transportat Engn, 5340 Xiping Rd, Tianjin 300401, Peoples R China

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Source :

COMPOSITES PART B-ENGINEERING

ISSN: 1359-8368

Year: 2020

Volume: 187

1 3 . 1 0 0

JCR@2022

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:169

Cited Count:

WoS CC Cited Count: 152

SCOPUS Cited Count: 168

ESI Highly Cited Papers on the List: 5 Unfold All

  • 2021-9
  • 2021-7
  • 2021-5
  • 2021-3
  • 2020-11

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 8

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