Effect of nanostructured silica additives on the extrusion-based 3D concrete printing application
Recently, 3D printing technology has become more popular in the field of construction. For the extrusion-based 3D concrete printing (3DCP) process, the cementitious material needs to be strong and flowable enough to ensure buildability and pumpability. Nanostructured silica, a kind of additive, has...
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sg-ntu-dr.10356-1700322023-08-26T16:48:20Z Effect of nanostructured silica additives on the extrusion-based 3D concrete printing application Liu, Zhenbang Li, Mingyang Moo, James Guo Sheng Kobayashi, Hitoshi Wong, Teck Neng Tan, Ming Jen School of Mechanical and Aerospace Engineering Singapore Centre for 3D Printing Engineering::Mechanical engineering 3D Concrete Printing Additive Manufacturing Recently, 3D printing technology has become more popular in the field of construction. For the extrusion-based 3D concrete printing (3DCP) process, the cementitious material needs to be strong and flowable enough to ensure buildability and pumpability. Nanostructured silica, a kind of additive, has been used to modify the 3DCP concrete to meet these requests. However, most previous studies focused on the effect of nanostructured silica on rheological properties and failed to link the obtained rheological properties of nanostructured-silica-modified cementitious materials to the performance in 3D printing. In this paper, the 3DCP mixture based on premix cement, river sand, silica fume, and water was modified by different dosages of nanostructured silica (from 0.25% to 1.00% by the total weight of the 3DCP mixture). The effects of nanostructured silica on the rheological, hydration, printing, and microstructural properties were determined by rheological tests, stress growth tests, setting time tests, printing tests, and scanning electron microscopy (SEM) tests, respectively. This paper revealed that the nanostructured silica has a positive effect on 3DCP buildability but negatively affects the printing quality, which fits the effect of nanostructured silica on the rheological properties. Hence, the determined rheological properties can qualitatively evaluate the printing performance of nanostructured-silica-modified cementitious materials. Nanyang Technological University National Research Foundation (NRF) Published version 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, and EVONIK (SEA) PTE. LTD. 2023-08-22T04:50:14Z 2023-08-22T04:50:14Z 2023 Journal Article Liu, Z., Li, M., Moo, J. G. S., Kobayashi, H., Wong, T. N. & Tan, M. J. (2023). Effect of nanostructured silica additives on the extrusion-based 3D concrete printing application. Journal of Composites Science, 7(5). https://dx.doi.org/10.3390/jcs7050191 2504-477X https://hdl.handle.net/10356/170032 10.3390/jcs7050191 2-s2.0-85160280211 5 7 en Journal of Composites Science © 2023 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 |
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Engineering::Mechanical engineering 3D Concrete Printing Additive Manufacturing Liu, Zhenbang Li, Mingyang Moo, James Guo Sheng Kobayashi, Hitoshi Wong, Teck Neng Tan, Ming Jen Effect of nanostructured silica additives on the extrusion-based 3D concrete printing application |
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Recently, 3D printing technology has become more popular in the field of construction. For the extrusion-based 3D concrete printing (3DCP) process, the cementitious material needs to be strong and flowable enough to ensure buildability and pumpability. Nanostructured silica, a kind of additive, has been used to modify the 3DCP concrete to meet these requests. However, most previous studies focused on the effect of nanostructured silica on rheological properties and failed to link the obtained rheological properties of nanostructured-silica-modified cementitious materials to the performance in 3D printing. In this paper, the 3DCP mixture based on premix cement, river sand, silica fume, and water was modified by different dosages of nanostructured silica (from 0.25% to 1.00% by the total weight of the 3DCP mixture). The effects of nanostructured silica on the rheological, hydration, printing, and microstructural properties were determined by rheological tests, stress growth tests, setting time tests, printing tests, and scanning electron microscopy (SEM) tests, respectively. This paper revealed that the nanostructured silica has a positive effect on 3DCP buildability but negatively affects the printing quality, which fits the effect of nanostructured silica on the rheological properties. Hence, the determined rheological properties can qualitatively evaluate the printing performance of nanostructured-silica-modified cementitious materials. |
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School of Mechanical and Aerospace Engineering |
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School of Mechanical and Aerospace Engineering Liu, Zhenbang Li, Mingyang Moo, James Guo Sheng Kobayashi, Hitoshi Wong, Teck Neng Tan, Ming Jen |
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Article |
author |
Liu, Zhenbang Li, Mingyang Moo, James Guo Sheng Kobayashi, Hitoshi Wong, Teck Neng Tan, Ming Jen |
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Liu, Zhenbang |
title |
Effect of nanostructured silica additives on the extrusion-based 3D concrete printing application |
title_short |
Effect of nanostructured silica additives on the extrusion-based 3D concrete printing application |
title_full |
Effect of nanostructured silica additives on the extrusion-based 3D concrete printing application |
title_fullStr |
Effect of nanostructured silica additives on the extrusion-based 3D concrete printing application |
title_full_unstemmed |
Effect of nanostructured silica additives on the extrusion-based 3D concrete printing application |
title_sort |
effect of nanostructured silica additives on the extrusion-based 3d concrete printing application |
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2023 |
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https://hdl.handle.net/10356/170032 |
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