Sustainable support material for overhang printing in 3D concrete printing technology
The advantage of 3DCP technologies is the ability to fabricate free-form structures. However, printing openings in concrete structures are limited by the presence of overhanging sections. While various 3D printing and additive manufacturing technologies have established methods for handling overhang...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/181423 |
| _version_ | 1824455058284085248 |
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| author | Ting, Andrew Guan Heng Tay, Daniel Yi Wei Quah, Noel Tan Kai Tan, Ming Jen Wong, Teck Neng |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Ting, Andrew Guan Heng Tay, Daniel Yi Wei Quah, Noel Tan Kai Tan, Ming Jen Wong, Teck Neng |
| author_sort | Ting, Andrew Guan Heng |
| collection | NTU |
| description | The advantage of 3DCP technologies is the ability to fabricate free-form structures. However, printing openings in concrete structures are limited by the presence of overhanging sections. While various 3D printing and additive manufacturing technologies have established methods for handling overhangs with temporary supports, many existing techniques for 3D concrete printing still rely on wooden planks and corbelling, which restrict the design flexibility and slope angles. The objective of this study is to develop a removable and sustainable support material with high printability performance. This support material serves as temporary support for overhang sections in 3D-printed structures and can be removed once the primary concrete has hardened sufficiently. This study observed that increasing the recycled glass content in the mixture raises both the dynamic and static yield stresses, with only mixtures containing up to 60% recycled glass remaining pumpable. Optimization of the mixture design aimed to balance high flowability and buildability, and the results indicated that a mixture with 60% recycled glass content is optimal. The effectiveness of the optimized support material was validated through the successful printing of a structure featuring a free-form opening and overhang section. |
| first_indexed | 2025-02-19T03:32:10Z |
| format | Journal Article |
| id | ntu-10356/181423 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:32:10Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1814232024-12-07T16:48:58Z Sustainable support material for overhang printing in 3D concrete printing technology Ting, Andrew Guan Heng Tay, Daniel Yi Wei Quah, Noel Tan Kai Tan, Ming Jen Wong, Teck Neng School of Mechanical and Aerospace Engineering Singapore Centre for 3D Printing Engineering 3D concrete printing Overhang printing The advantage of 3DCP technologies is the ability to fabricate free-form structures. However, printing openings in concrete structures are limited by the presence of overhanging sections. While various 3D printing and additive manufacturing technologies have established methods for handling overhangs with temporary supports, many existing techniques for 3D concrete printing still rely on wooden planks and corbelling, which restrict the design flexibility and slope angles. The objective of this study is to develop a removable and sustainable support material with high printability performance. This support material serves as temporary support for overhang sections in 3D-printed structures and can be removed once the primary concrete has hardened sufficiently. This study observed that increasing the recycled glass content in the mixture raises both the dynamic and static yield stresses, with only mixtures containing up to 60% recycled glass remaining pumpable. Optimization of the mixture design aimed to balance high flowability and buildability, and the results indicated that a mixture with 60% recycled glass content is optimal. The effectiveness of the optimized support material was validated through the successful printing of a structure featuring a free-form opening and overhang section. Published version 2024-12-02T02:58:55Z 2024-12-02T02:58:55Z 2024 Journal Article Ting, A. G. H., Tay, D. Y. W., Quah, N. T. K., Tan, M. J. & Wong, T. N. (2024). Sustainable support material for overhang printing in 3D concrete printing technology. Applied Sciences, 14(17), 14177800-. https://dx.doi.org/10.3390/app14177800 2076-3417 https://hdl.handle.net/10356/181423 10.3390/app14177800 2-s2.0-85203625315 17 14 14177800 en Applied Sciences © 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/). application/pdf |
| spellingShingle | Engineering 3D concrete printing Overhang printing Ting, Andrew Guan Heng Tay, Daniel Yi Wei Quah, Noel Tan Kai Tan, Ming Jen Wong, Teck Neng Sustainable support material for overhang printing in 3D concrete printing technology |
| title | Sustainable support material for overhang printing in 3D concrete printing technology |
| title_full | Sustainable support material for overhang printing in 3D concrete printing technology |
| title_fullStr | Sustainable support material for overhang printing in 3D concrete printing technology |
| title_full_unstemmed | Sustainable support material for overhang printing in 3D concrete printing technology |
| title_short | Sustainable support material for overhang printing in 3D concrete printing technology |
| title_sort | sustainable support material for overhang printing in 3d concrete printing technology |
| topic | Engineering 3D concrete printing Overhang printing |
| url | https://hdl.handle.net/10356/181423 |
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