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Printability and Setting Time of CSA Cement with Na(2)SiO(3) and Gypsum for Binder Jetting 3D Printing

The purpose of this study is to optimize the composition of CSA (calcium sulfoaluminate) cement with sodium silicate (Na(2)SiO(3)) and gypsum for binder jetting 3D printing. The preliminary test was carried out with an applicator to decide the proper thickness of one layer before using the 3D printe...

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Autores principales: Na, Okpin, Kim, Kangmin, Lee, Hyunjoo, Lee, Hyunseung
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8197472/
https://www.ncbi.nlm.nih.gov/pubmed/34070415
http://dx.doi.org/10.3390/ma14112811
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author Na, Okpin
Kim, Kangmin
Lee, Hyunjoo
Lee, Hyunseung
author_facet Na, Okpin
Kim, Kangmin
Lee, Hyunjoo
Lee, Hyunseung
author_sort Na, Okpin
collection PubMed
description The purpose of this study is to optimize the composition of CSA (calcium sulfoaluminate) cement with sodium silicate (Na(2)SiO(3)) and gypsum for binder jetting 3D printing. The preliminary test was carried out with an applicator to decide the proper thickness of one layer before using the 3D printer. A liquid binder was then selected to maintain the shape of the particles. Based on the results, the optimal mixture of dry materials and a liquid activator was derived through various parametric studies. For dry materials, the optimum composition of CSA cement, gypsum, and sand was suggested, and the liquid activator made with sodium silicate solution and VMA (viscosity modified agent) were selected. The setting time with gypsum and sodium silicate was controlled within 30 s. In case of the delayed setting time and the rapid setting mixture, the jetting line was printed thicker or thinner and the accuracy of the printout was degraded. In order to adjust the viscosity of the liquid activator, 10% of the VMA was used in 35% of sodium silicate solution and the viscosity of 200–400 cP was suitable to be sprayed from the nozzle. With this optimal mixture, a prototype of atypical decorative wall was printed, and the compressive strength was measured at about 7 MPa.
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spelling pubmed-81974722021-06-13 Printability and Setting Time of CSA Cement with Na(2)SiO(3) and Gypsum for Binder Jetting 3D Printing Na, Okpin Kim, Kangmin Lee, Hyunjoo Lee, Hyunseung Materials (Basel) Article The purpose of this study is to optimize the composition of CSA (calcium sulfoaluminate) cement with sodium silicate (Na(2)SiO(3)) and gypsum for binder jetting 3D printing. The preliminary test was carried out with an applicator to decide the proper thickness of one layer before using the 3D printer. A liquid binder was then selected to maintain the shape of the particles. Based on the results, the optimal mixture of dry materials and a liquid activator was derived through various parametric studies. For dry materials, the optimum composition of CSA cement, gypsum, and sand was suggested, and the liquid activator made with sodium silicate solution and VMA (viscosity modified agent) were selected. The setting time with gypsum and sodium silicate was controlled within 30 s. In case of the delayed setting time and the rapid setting mixture, the jetting line was printed thicker or thinner and the accuracy of the printout was degraded. In order to adjust the viscosity of the liquid activator, 10% of the VMA was used in 35% of sodium silicate solution and the viscosity of 200–400 cP was suitable to be sprayed from the nozzle. With this optimal mixture, a prototype of atypical decorative wall was printed, and the compressive strength was measured at about 7 MPa. MDPI 2021-05-25 /pmc/articles/PMC8197472/ /pubmed/34070415 http://dx.doi.org/10.3390/ma14112811 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/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/).
spellingShingle Article
Na, Okpin
Kim, Kangmin
Lee, Hyunjoo
Lee, Hyunseung
Printability and Setting Time of CSA Cement with Na(2)SiO(3) and Gypsum for Binder Jetting 3D Printing
title Printability and Setting Time of CSA Cement with Na(2)SiO(3) and Gypsum for Binder Jetting 3D Printing
title_full Printability and Setting Time of CSA Cement with Na(2)SiO(3) and Gypsum for Binder Jetting 3D Printing
title_fullStr Printability and Setting Time of CSA Cement with Na(2)SiO(3) and Gypsum for Binder Jetting 3D Printing
title_full_unstemmed Printability and Setting Time of CSA Cement with Na(2)SiO(3) and Gypsum for Binder Jetting 3D Printing
title_short Printability and Setting Time of CSA Cement with Na(2)SiO(3) and Gypsum for Binder Jetting 3D Printing
title_sort printability and setting time of csa cement with na(2)sio(3) and gypsum for binder jetting 3d printing
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8197472/
https://www.ncbi.nlm.nih.gov/pubmed/34070415
http://dx.doi.org/10.3390/ma14112811
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AT leehyunjoo printabilityandsettingtimeofcsacementwithna2sio3andgypsumforbinderjetting3dprinting
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