Computational Fluid Dynamics Modelling and Experimental Analysis of Reinforcement-Bar-Integration in 3D Concrete Printing (2023-07)¶
10.1016/j.cemconres.2023.107263
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Journal Article - Cement and Concrete Research, Vol. 173, No. 107263
Abstract
A challenge for 3D Concrete Printing is to incorporate reinforcement bars without compromising the concreterebar bonding. In this paper, a Computational Fluid Dynamics (CFD) model is used to analyze the deposition of concrete around pre-installed rebars. The concrete is modelled with a yield-stress dependent elastoviscoplastic constitutive model. The simulated cross-sections of the deposited layers are compared with experiments under different configurations and rebar sizes, and found capable of capturing the air void formation with high accuracy. This proves model robustness and provides a tool for running digital experiments prior to fullscale tests. Additionally, the model is employed to conduct a parametric study under three different rebarconfigurations: i) no-rebar; ii) horizontal rebar; and iii) cross-shaped (horizontal and vertical) rebars. The results illustrate that air voids can be eliminated in all investigated cases by changing the toolpath, process parameters, and rebar joint geometry, which emphasizes the great potential of the digital model.
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BibTeX
@article{moll_comm_silv_seta.2023.CFDMaEAoRBIi3CP,
author = "Md. Tusher Mollah and Raphaël Comminal and Wilson Ricardo Leal da Silva and Berin Šeta and Jon Spangenberg",
title = "Computational Fluid Dynamics Modelling and Experimental Analysis of Reinforcement-Bar-Integration in 3D Concrete Printing",
doi = "10.1016/j.cemconres.2023.107263",
year = "2023",
journal = "Cement and Concrete Research",
volume = "173",
pages = "107263",
}
Formatted Citation
M. T. Mollah, R. Comminal, W. R. L. da Silva, B. Šeta and J. Spangenberg, “Computational Fluid Dynamics Modelling and Experimental Analysis of Reinforcement-Bar-Integration in 3D Concrete Printing”, Cement and Concrete Research, vol. 173, p. 107263, 2023, doi: 10.1016/j.cemconres.2023.107263.
Mollah, Md. Tusher, Raphaël Comminal, Wilson Ricardo Leal da Silva, Berin Šeta, and Jon Spangenberg. “Computational Fluid Dynamics Modelling and Experimental Analysis of Reinforcement-Bar-Integration in 3D Concrete Printing”. Cement and Concrete Research 173 (2023): 107263. https://doi.org/10.1016/j.cemconres.2023.107263.