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Rheological Property Criteria for Buildable 3D Printing Concrete
Fresh concrete used in 3D printing should ensure adequate yield stress, otherwise the printed concrete layer may suffer intolerable deformation or collapse during the printing process. In response to this issue, an analytical study was carried out to derive the initial yield stress and hardening coe...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6416735/ https://www.ncbi.nlm.nih.gov/pubmed/30795642 http://dx.doi.org/10.3390/ma12040657 |
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author | Jeong, Hoseong Han, Sun-Jin Choi, Seung-Ho Lee, Yoon Jung Yi, Seong Tae Kim, Kang Su |
author_facet | Jeong, Hoseong Han, Sun-Jin Choi, Seung-Ho Lee, Yoon Jung Yi, Seong Tae Kim, Kang Su |
author_sort | Jeong, Hoseong |
collection | PubMed |
description | Fresh concrete used in 3D printing should ensure adequate yield stress, otherwise the printed concrete layer may suffer intolerable deformation or collapse during the printing process. In response to this issue, an analytical study was carried out to derive the initial yield stress and hardening coefficient of fresh concrete suitable for 3D printing. The maximum shear stress distribution of fresh concrete was calculated using a stress transformation equation derived from the equilibrium condition of forces. In addition, the elapsed time experienced by fresh concrete during the printing processes was estimated and was then substituted into the elapsed time-yield stress function to calculate the yield stress distribution. Based on these results, an algorithm capable of deriving both the initial yield stress and the hardening coefficient required for printing fresh concrete up to the target height was proposed and computational fluid dynamics (CFD) analyses were performed to verify the accuracy of the proposed model. |
format | Online Article Text |
id | pubmed-6416735 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-64167352019-03-29 Rheological Property Criteria for Buildable 3D Printing Concrete Jeong, Hoseong Han, Sun-Jin Choi, Seung-Ho Lee, Yoon Jung Yi, Seong Tae Kim, Kang Su Materials (Basel) Article Fresh concrete used in 3D printing should ensure adequate yield stress, otherwise the printed concrete layer may suffer intolerable deformation or collapse during the printing process. In response to this issue, an analytical study was carried out to derive the initial yield stress and hardening coefficient of fresh concrete suitable for 3D printing. The maximum shear stress distribution of fresh concrete was calculated using a stress transformation equation derived from the equilibrium condition of forces. In addition, the elapsed time experienced by fresh concrete during the printing processes was estimated and was then substituted into the elapsed time-yield stress function to calculate the yield stress distribution. Based on these results, an algorithm capable of deriving both the initial yield stress and the hardening coefficient required for printing fresh concrete up to the target height was proposed and computational fluid dynamics (CFD) analyses were performed to verify the accuracy of the proposed model. MDPI 2019-02-21 /pmc/articles/PMC6416735/ /pubmed/30795642 http://dx.doi.org/10.3390/ma12040657 Text en © 2019 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 (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Jeong, Hoseong Han, Sun-Jin Choi, Seung-Ho Lee, Yoon Jung Yi, Seong Tae Kim, Kang Su Rheological Property Criteria for Buildable 3D Printing Concrete |
title | Rheological Property Criteria for Buildable 3D Printing Concrete |
title_full | Rheological Property Criteria for Buildable 3D Printing Concrete |
title_fullStr | Rheological Property Criteria for Buildable 3D Printing Concrete |
title_full_unstemmed | Rheological Property Criteria for Buildable 3D Printing Concrete |
title_short | Rheological Property Criteria for Buildable 3D Printing Concrete |
title_sort | rheological property criteria for buildable 3d printing concrete |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6416735/ https://www.ncbi.nlm.nih.gov/pubmed/30795642 http://dx.doi.org/10.3390/ma12040657 |
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