Determine the effects of pore properties on the mechanical performances of 3D concrete printing units with experimental and numerical methods
The anisotropic performances of 3D concrete printing (3DCP) units were usually considered correlated to interlayers. While recent studies proposed that the anisotropy might be caused by pores, the link between pore properties and mechanical performances remains at a qualitative level. In this paper,...
| Glavni autori: | , , , |
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| Daljnji autori: | |
| Format: | Journal Article |
| Jezik: | English |
| Izdano: |
2024
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| Teme: | |
| Online pristup: | https://hdl.handle.net/10356/179094 |
| _version_ | 1826112590594441216 |
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| author | Liu, Zhenbang Li, Mingyang Wong, Teck Neng Tan, Ming Jen |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Liu, Zhenbang Li, Mingyang Wong, Teck Neng Tan, Ming Jen |
| author_sort | Liu, Zhenbang |
| collection | NTU |
| description | The anisotropic performances of 3D concrete printing (3DCP) units were usually considered correlated to interlayers. While recent studies proposed that the anisotropy might be caused by pores, the link between pore properties and mechanical performances remains at a qualitative level. In this paper, Computed Tomography (CT) scans and mechanical tests were first conducted to determine the pore properties and the mechanical performances of 3DCP units. Afterward, MATLAB codes were adopted to convert CT scan images into finite element (FE) models containing pores and solid elements of concrete, and an inverse method was applied to obtain the constitutive model of concrete. Finally, CT-scan-based simulation was carried out, and the corresponding results were compared to experimental results to determine the quantitative link between the pore properties and the mechanical performances of 3DCP units. CT scan results showed that pores can be represented by a biconvex-lens shape without the obvious orientation along the printing direction, which differs from the observation in previous studies. Compared to the mechanical test results, CT-scan-based simulation results showed good agreement with a maximum error of 5.9 %, which revealed its feasibility for evaluating the 3DCP unit mechanical performances. Because the model only contains a sole variable – pores, the consistency between simulation results and test results proves the quantitative link between the pore properties and the mechanical performances of 3DCP units. |
| first_indexed | 2024-10-01T03:09:33Z |
| format | Journal Article |
| id | ntu-10356/179094 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:09:33Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1790942024-07-17T06:57:15Z Determine the effects of pore properties on the mechanical performances of 3D concrete printing units with experimental and numerical methods Liu, Zhenbang Li, Mingyang Wong, Teck Neng Tan, Ming Jen School of Mechanical and Aerospace Engineering Singapore Centre for 3D Printing Engineering 3D concrete printing Computed Tomography scan The anisotropic performances of 3D concrete printing (3DCP) units were usually considered correlated to interlayers. While recent studies proposed that the anisotropy might be caused by pores, the link between pore properties and mechanical performances remains at a qualitative level. In this paper, Computed Tomography (CT) scans and mechanical tests were first conducted to determine the pore properties and the mechanical performances of 3DCP units. Afterward, MATLAB codes were adopted to convert CT scan images into finite element (FE) models containing pores and solid elements of concrete, and an inverse method was applied to obtain the constitutive model of concrete. Finally, CT-scan-based simulation was carried out, and the corresponding results were compared to experimental results to determine the quantitative link between the pore properties and the mechanical performances of 3DCP units. CT scan results showed that pores can be represented by a biconvex-lens shape without the obvious orientation along the printing direction, which differs from the observation in previous studies. Compared to the mechanical test results, CT-scan-based simulation results showed good agreement with a maximum error of 5.9 %, which revealed its feasibility for evaluating the 3DCP unit mechanical performances. Because the model only contains a sole variable – pores, the consistency between simulation results and test results proves the quantitative link between the pore properties and the mechanical performances of 3DCP units. National Research Foundation (NRF) This research is supported by the National Research Foundation, Singapore, Prime Minister’s Office, Singapore, under its Medium Sized Centre funding scheme, Singapore Centre for 3D Printing, Chip Eng Seng Corporation Ltd., CES_SDC Pte. Ltd., and CES_INNOVFAB Pte. Ltd. 2024-07-17T06:57:14Z 2024-07-17T06:57:14Z 2024 Journal Article Liu, Z., Li, M., Wong, T. N. & Tan, M. J. (2024). Determine the effects of pore properties on the mechanical performances of 3D concrete printing units with experimental and numerical methods. Journal of Building Engineering, 92, 109730-. https://dx.doi.org/10.1016/j.jobe.2024.109730 2352-7102 https://hdl.handle.net/10356/179094 10.1016/j.jobe.2024.109730 2-s2.0-85194945179 92 109730 en Journal of Building Engineering © 2024 Elsevier Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies. |
| spellingShingle | Engineering 3D concrete printing Computed Tomography scan Liu, Zhenbang Li, Mingyang Wong, Teck Neng Tan, Ming Jen Determine the effects of pore properties on the mechanical performances of 3D concrete printing units with experimental and numerical methods |
| title | Determine the effects of pore properties on the mechanical performances of 3D concrete printing units with experimental and numerical methods |
| title_full | Determine the effects of pore properties on the mechanical performances of 3D concrete printing units with experimental and numerical methods |
| title_fullStr | Determine the effects of pore properties on the mechanical performances of 3D concrete printing units with experimental and numerical methods |
| title_full_unstemmed | Determine the effects of pore properties on the mechanical performances of 3D concrete printing units with experimental and numerical methods |
| title_short | Determine the effects of pore properties on the mechanical performances of 3D concrete printing units with experimental and numerical methods |
| title_sort | determine the effects of pore properties on the mechanical performances of 3d concrete printing units with experimental and numerical methods |
| topic | Engineering 3D concrete printing Computed Tomography scan |
| url | https://hdl.handle.net/10356/179094 |
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