Introduction of a Small-Scale Concrete 3D Printer Supported by JKA
- 5月29日
- 読了時間: 1分
In June 2025, our laboratory introduced a small-scale concrete 3D printer, GL-3DPRT-D, manufactured by Guanli, with valuable support from Prof. An Xuehui of Tsinghua University.
The GL-3DPRT-D has a compact and simple configuration without a pumping system. While this may appear to be a limitation for large-scale construction applications, it is highly suitable for laboratory-scale research. The system allows us to conduct repeated printing trials using relatively small amounts of material and to adjust printing conditions flexibly.
Using this printer, we have conducted research on reinforcement methods for 3D-printed cementitious members. In particular, we studied the insertion of small-diameter deformed steel bars into printed layers and prepared reinforced printed specimens for mechanical testing. Bending tests, pull-out tests, and uniaxial tension tests were carried out to evaluate the mechanical behavior of reinforced printed elements.
The experimental results indicate that inserted reinforcement can improve the post-peak behavior and ductility of printed specimens. At the same time, the tests also highlighted important technical challenges, including bond performance between the reinforcement and mortar, insertion accuracy, and the control of voids around the reinforcement.
The outcomes of this project will be further developed through academic conference presentations and journal publications. We will continue this research toward safer and more reliable structural applications of 3D concrete printing.
This project was supported by JKA through a Keirin grant.
JKA Keirin and Autorace Grant Program:
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