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Title:Temperature pre-treatment of gypsum for powder based 3D printing technology
Authors:ID Zalar Serjun, Vesna (Author)
ID Korat Bensa, Lidija (Author)
Files:.pdf PDF - Presentation file, download (9,29 MB)
MD5: 9894BB38311A12D91AA0F5BC762F8F04
Description: Odprti dostop
 
.pdf PDF - Presentation file, download (1,74 MB)
MD5: FE89D07D97CA55D82F30F3DB2B678CDC
 
URL URL - Source URL, visit https://www.zag.si/dl/coms2020-21-proceedings-2.pdf
 
Language:English
Typology:1.08 - Published Scientific Conference Contribution
Organization:Logo ZAG - Slovenian National Building and Civil Engineering Institute
Abstract:In recent years many researchers have been involved in studies in the field of pre-treatment of various raw materials. Temperature treatment of materials results in several advantages, which have been already recognised and successfully applied in various fields of applications. Where at the same time, the practices has been adopted also in the field of 3D printing. Enhanced strength and stiffness, assuring desirable performance criteria of the 3D printed models, reflect the most important characteristics. 3D printing binder jetting technology is based on the application of liquid binders onto powdered material, where gypsum powders have been commercially used as a base raw material. As natural raw materials can be replaced by other materials, such as recycled industrial by products, the aim of this research work was to evaluate the potential usage of three synthetic gypsum powders from different industrial processes for 3D printing. The investigation covered (a) mineralogical and microstructural characteristics of gypsums from different origin and (b) the effect of pre-treatment of gypsum powders at different temperatures (up to 500 °C). On the basis of the results, the most promising temperature regime for each different waste gypsum powder treatment, reflecting in the most optimal setting time, was defined. Synthetic gypsums were characterized by X-ray diffraction (QXRD), scanning electron microscopy (SEM) and differential thermal analysis (TG/DTA). The results showed that all three synthetic gypsums (calcium sulfate dihydrate, CaSO 4∙2H2O) thermally degrade into calcium sulfate anhydrite (CaSO 4) via an intermediate calcium sulfate hemihydrate (CaSO 4∙ ½H2 O, bassanite) phase. Microstructural and mineralogical differences were observed when temperature treated gypsums from different origins were compared. The detailed knowledge of gypsum powder properties at different temperature regime is important parameter for the assurance of 3D printing key parameters such as flowability, roughness and wettability, especially for determination of saturation levels and setting time. After all, these parameters define final mechanical properties of 3D printed structures. By using such approach, the understanding of material compatibility for 3D printing technology can be defined and improved if necessary.
Keywords:3D print, additive manufacturing, gypsum, temperature
Publication status:Published
Publication version:Version of Record
Publication date:01.01.2021
Publisher:Slovenian National Building and Civil Engineering Institute
Year of publishing:2021
Number of pages:Str. 169-174
PID:20.500.12556/DiRROS-17969 New window
UDC:624
COBISS.SI-ID:64725507 New window
Copyright:© 2021 Slovenian National Building and Civil Engineering Institute
Note:Nasl. z nasl. zaslona; Opis vira z dne 26. 5. 2021;
Publication date in DiRROS:25.01.2024
Views:742
Downloads:461
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ZALAR SERJUN, Vesna and KORAT BENSA, Lidija, 2021, Temperature pre-treatment of gypsum for powder based 3D printing technology. In : Construction materials for a sustainable future [online]. Published Scientific Conference Contribution. Ljubljana : Slovenian National Building and Civil Engineering Institute. 2021. p. 169–174. [Accessed 16 March 2025]. Retrieved from: https://dirros.openscience.si/IzpisGradiva.php?lang=eng&id=17969
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Record is a part of a monograph

Title:Construction materials for a sustainable future : proceedings of the 2nd International Conference CoMS 2020/21
Editors:Aljoša Šajna, Andraž Legat, Sabina Jordan, Petra Horvat, Ema Kemperle, Sabina Dolenec, Metka Ljubešek, Matej Michelizza
Place of publishing:Ljubljana
Publisher:Slovenian National Building and Civil Engineering Institute
Year of publishing:2021
ISBN:978-961-7125-01-6
COBISS.SI-ID:60496131 New window

Document is financed by a project

Funder:ARRS - Slovenian Research Agency
Project number:Z2-1861
Name:Razvoj prahu za namene 3D-tiskanih mezostrukturnih izolacijskih materialov
Funder:ARRS - Slovenian Research Agency
Project number:Z1-1858
Name:Recikliranje odpadne titanove sadre v cementnih kompozitih
Funder:ARRS - Slovenian Research Agency
Project number:P2-0273
Name:Gradbeni objekti in materiali

Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.

Secondary language

Language:Slovenian
Keywords:3D tisk, dodajalne tehnologije, sadra, temperature


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