A Direction-Independent Reinforcement by Combination of Fiber-Reinforced Cementitious Composite and Automated Pin Insertion (2024-09)¶

10.1007/978-3-031-70031-6_39

Tasaki Haruto, Asakawa Tomoya, Kobayashi Noriyuki, Nishiwaki Tomoya, Egawa Ryo, Kojima Shotaro, Okada Yoshito, Ohno Kazunori, Nishijo Keisuke, Sato Sho, Miyazawa Yuki, Kajita Hideyuki
Contribution - Proceedings of the 4^th RILEM International Conference on Concrete and Digital Fabrication, pp. 335-341

Abstract

In recent years, 3D concrete printing (3DCP) systems have attracted great attention in the construction field and is in fierce development competition. 3DCP systems cause discontinuities between layers and results in mechanical performance degradation of the laminated structures. Therefore, numerous reinforcement methods have been proposed, however, many of proposals include problems such as limited effective reinforcement directions and the necessity of combining conventional labor-intensive construction site work. In this study, we proposed a novel reinforcement mechanism which the combines fiber-reinforced cementitious composites (FRCC), for reinforcing the horizontal direction, and an automated insertion mechanism of reinforcement steel pins, penetrating between layers for the vertical direction. FRCC layers with reinforcing pins inserted by the automated insertion system were prepared to realize this proposal. A bending test was conducted on the obtained specimens by cutting from the laminates. The results showed the direction-independent reinforcing effect of both parallel and vertical to the printing direction. In the horizontal direction, strength and toughness were increased due to the FRCC characteristics, and in the strength in vertical direction, in which the FRCC effect was limited according to previous studies, was increased up to approximately 50% by the inserted reinforcing pins between layers.

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BibTeX

@inproceedings{tasa_asak_koba_nish.2024.ADIRbCoFRCCaAPI,
  author            = "Haruto Tasaki and Tomoya Asakawa and Noriyuki Kobayashi and Tomoya Nishiwaki and Ryo Egawa and Shotaro Kojima and Yoshito Okada and Kazunori Ohno and Keisuke Nishijo and Sho Sato and Yuki Miyazawa and Hideyuki Kajita",
  title             = "A Direction-Independent Reinforcement by Combination of Fiber-Reinforced Cementitious Composite and Automated Pin Insertion",
  doi               = "10.1007/978-3-031-70031-6_39",
  year              = "2024",
  volume            = "53",
  pages             = "335--341",
  booktitle         = "Proceedings of the 4th RILEM International Conference on Concrete and Digital Fabrication",
  editor            = "Dirk Lowke and Niklas Freund and David Böhler and Friedrich Herding",
}

Formatted Citation

IEEE

H. Tasaki, “A Direction-Independent Reinforcement by Combination of Fiber-Reinforced Cementitious Composite and Automated Pin Insertion”, in Proceedings of the 4^th RILEM International Conference on Concrete and Digital Fabrication, 2024, vol. 53, pp. 335–341. doi: 10.1007/978-3-031-70031-6_39.

CMOS

Tasaki, Haruto, Tomoya Asakawa, Noriyuki Kobayashi, Tomoya Nishiwaki, Ryo Egawa, Shotaro Kojima, Yoshito Okada, et al.. “A Direction-Independent Reinforcement by Combination of Fiber-Reinforced Cementitious Composite and Automated Pin Insertion”. In Proceedings of the 4^th RILEM International Conference on Concrete and Digital Fabrication, edited by Dirk Lowke, Niklas Freund, David Böhler, and Friedrich Herding, 53:335–41, 2024. https://doi.org/10.1007/978-3-031-70031-6_39.