Feasibility study on sustainable magnesium potassium phosphate cement paste for 3D printing
3D printing of cementitious materials is an innovative and promising approach in the construction sector, attracting much attention over the past few years. Use of waste cementitious materials in the production of 3D printable components increases the sustainability and cost-effectiveness of this pr...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Online Access: | https://hdl.handle.net/10356/140134 |
| _version_ | 1811676670296326144 |
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| author | Weng, Yiwei Ruan, Shaoqin Li, Mingyang Mo, Liwu Unluer, Cise Tan, Ming Jen Qian, Shunzhi |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Weng, Yiwei Ruan, Shaoqin Li, Mingyang Mo, Liwu Unluer, Cise Tan, Ming Jen Qian, Shunzhi |
| author_sort | Weng, Yiwei |
| collection | NTU |
| description | 3D printing of cementitious materials is an innovative and promising approach in the construction sector, attracting much attention over the past few years. Use of waste cementitious materials in the production of 3D printable components increases the sustainability and cost-effectiveness of this process. This work proposes an environmentally friendly 3D printable cementitious material involving the use of magnesium potassium phosphate cement (MKPC) with various ratios of fly ash replacement ranging from 0 to 60 wt% to increase the working time of the binder. Silica fume was used at up to 10 wt% to adjust rheological and mechanical properties. The performance of the developed MKPC binders with different formulations in the context of 3D printing was assessed via a detailed investigation of the workability, extrudability, buildability, compressive strength, porosity and microstructural analysis. Amongst the mixtures studied, the optimum MKPC formulation involving 60 wt% fly ash and 10 wt% silica fume with a borax-to-magnesia ratio of 1:4 was selected for a small-scale printing demonstration in line with its rheological and mechanical properties. Finally, a 20-layer component with a height of 180 mm was printed in 5 min to demonstrate the feasibility of the adopted mixture in 3D printing. |
| first_indexed | 2024-10-01T02:25:10Z |
| format | Journal Article |
| id | ntu-10356/140134 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:25:10Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1401342021-02-11T04:07:21Z Feasibility study on sustainable magnesium potassium phosphate cement paste for 3D printing Weng, Yiwei Ruan, Shaoqin Li, Mingyang Mo, Liwu Unluer, Cise Tan, Ming Jen Qian, Shunzhi School of Civil and Environmental Engineering School of Mechanical and Aerospace Engineering Singapore Centre for 3D Printing Engineering::Mechanical engineering 3D Printing Additive Manufacturing 3D printing of cementitious materials is an innovative and promising approach in the construction sector, attracting much attention over the past few years. Use of waste cementitious materials in the production of 3D printable components increases the sustainability and cost-effectiveness of this process. This work proposes an environmentally friendly 3D printable cementitious material involving the use of magnesium potassium phosphate cement (MKPC) with various ratios of fly ash replacement ranging from 0 to 60 wt% to increase the working time of the binder. Silica fume was used at up to 10 wt% to adjust rheological and mechanical properties. The performance of the developed MKPC binders with different formulations in the context of 3D printing was assessed via a detailed investigation of the workability, extrudability, buildability, compressive strength, porosity and microstructural analysis. Amongst the mixtures studied, the optimum MKPC formulation involving 60 wt% fly ash and 10 wt% silica fume with a borax-to-magnesia ratio of 1:4 was selected for a small-scale printing demonstration in line with its rheological and mechanical properties. Finally, a 20-layer component with a height of 180 mm was printed in 5 min to demonstrate the feasibility of the adopted mixture in 3D printing. Accepted version 2020-05-26T13:19:38Z 2020-05-26T13:19:38Z 2019 Journal Article Weng, Y., Ruan, S., Li, M., Mo, L., Unluer, C., Tan, M. J., & Qian, S. (2019). Feasibility study on sustainable magnesium potassium phosphate cement paste for 3D printing. Construction and Building Materials, 221, 595-603. doi:10.1016/j.conbuildmat.2019.05.053 0950-0618 https://hdl.handle.net/10356/140134 10.1016/j.conbuildmat.2019.05.053 221 595 603 en Construction and Building Materials © 2019 Elsevier Ltd. All rights reserved. This paper was published in Construction and Building Materials and is made available with permission of Elsevier Ltd. application/pdf |
| spellingShingle | Engineering::Mechanical engineering 3D Printing Additive Manufacturing Weng, Yiwei Ruan, Shaoqin Li, Mingyang Mo, Liwu Unluer, Cise Tan, Ming Jen Qian, Shunzhi Feasibility study on sustainable magnesium potassium phosphate cement paste for 3D printing |
| title | Feasibility study on sustainable magnesium potassium phosphate cement paste for 3D printing |
| title_full | Feasibility study on sustainable magnesium potassium phosphate cement paste for 3D printing |
| title_fullStr | Feasibility study on sustainable magnesium potassium phosphate cement paste for 3D printing |
| title_full_unstemmed | Feasibility study on sustainable magnesium potassium phosphate cement paste for 3D printing |
| title_short | Feasibility study on sustainable magnesium potassium phosphate cement paste for 3D printing |
| title_sort | feasibility study on sustainable magnesium potassium phosphate cement paste for 3d printing |
| topic | Engineering::Mechanical engineering 3D Printing Additive Manufacturing |
| url | https://hdl.handle.net/10356/140134 |
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