An Investigation on Enhancing the Bonding Properties of 3D Printed Concrete Permanent Formwork and Post-Casted Concrete (2024-08)¶
10.1016/j.conbuildmat.2024.137841
Yu Qian, Zuo Qinxin, ,
Journal Article - Construction and Building Materials, Vol. 444, No. 137841
Abstract
Employing 3D-printed permanent formwork (3DPF) technology for rapidly manufacturing prefabricated components constructed with reinforced concrete represents a promising application of additive manufacturing technology in load-bearing constructions. Ensuring efficient bonding between 3DPF and post-casted concrete (PCC) is a prerequisite for the widespread adoption of this technology. This research aims to enhance the 3DPF-PCC interface through: physical (groove), chemical (cement paste) and composite methods. The interfacial bond strength was quantitatively analysed by splitting tensile strength and shear strength. X-ray computed tomography scanning was utilized for the quantitative characterization of pore structures. Digital image processing techniques were employed to monitor crack development during splitting tensile tests. The mechanism for strengthening the shear strength of the grooved interface was elucidated using a finite element model, and a modified formula for calculating the shear strength of the 3DPF-PCC grooved interface was proposed. The physical method improves shear strength by increasing interlocking structures significantly. The composite method weakens mechanical interlocking structures, increases interface porosity, and adversely affects interface bonding strength. It is recommended that future engineering applications adopt the physical process to improve mechanical interlocking structures and ensure interface bonding strength.
¶
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BibTeX
@article{yu_zuo_zhan_pan.2024.AIoEtBPo3PCPFaPCC,
author = "Qian Yu and Qinxin Zuo and Yamei Zhang and Jinlong Pan",
title = "An Investigation on Enhancing the Bonding Properties of 3D Printed Concrete Permanent Formwork and Post-Casted Concrete",
doi = "10.1016/j.conbuildmat.2024.137841",
year = "2024",
journal = "Construction and Building Materials",
volume = "444",
pages = "137841",
}
Formatted Citation
Q. Yu, Q. Zuo, Y. Zhang and J. Pan, “An Investigation on Enhancing the Bonding Properties of 3D Printed Concrete Permanent Formwork and Post-Casted Concrete”, Construction and Building Materials, vol. 444, p. 137841, 2024, doi: 10.1016/j.conbuildmat.2024.137841.
Yu, Qian, Qinxin Zuo, Yamei Zhang, and Jinlong Pan. “An Investigation on Enhancing the Bonding Properties of 3D Printed Concrete Permanent Formwork and Post-Casted Concrete”. Construction and Building Materials 444 (2024): 137841. https://doi.org/10.1016/j.conbuildmat.2024.137841.