Structural behavior of ice composite for 3D printing

Arno D.C. Pronk, D. Jansen, Kamil Kara, J. Van Laar, Hendrikus Willems

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

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Samenvatting

3D printing with ice composites is an entire new field. It could be applied for Mars missions by using Robots with locally available material such as ice and soil. Another application is 3D printing for sculptures. The third application is 3D printing for temporary structures in artic areas. The problem of using ice for construction is its brittleness. It is possible to reinforce ice with additives. Just as concrete or polymers can be reinforced with steel rods or fibers, ice can be reinforced with soil, silica, wood, paper fibers or polyphenol alcohol. The fibers increase the ductility, compressive and tensile strength. In this way ice becomes a reliable material for construction at temperatures of -8C or lower. The extrusion of cellulose-reinforced ice leads to the drainage of water just before the extrusion nozzle. Therefore, the compressed water-cellulose mixture will form clots in the nozzle, leading to an unreliable process. By mixing fibers, water and a jelly of Guar Gum and Xanthan Gum this problem was solved. A hybrid mixture with other materials such as sand will increase the material properties of the ice composite further more. It will increase both its bending as its compression strength. Adding cellulose showed promising post-peak strain softening behavior. Experiments with different temperatures and testing speeds were conducted. From these experiments it was concluded that both the ultimate strength and the stiffness of the specimens decrease with increasing temperature. At tempters close to 0ºC, the post-peak behavior also changes from brittle to more ductile. Furthermore, the bending tests were modelled in a FEM program and compared with the executed experiments. Based on these experiments in December 2018 the first 3D-printed grid shell in ice composite was realized in Harbin, China.

Originele taal-2Engels
TitelIASS Symposium 2019 - 60th Anniversary Symposium of the International Association for Shell and Spatial Structures; Structural Membranes 2019 - 9th International Conference on Textile Composites and Inflatable Structures, FORM and FORCE
RedacteurenCarlos Lazaro, Kai-Uwe Bletzinger, Eugenio Onate
UitgeverijInternational Center for Numerical Methods in Engineering (CIMNE)
Pagina's2503-2510
Aantal pagina's8
ISBN van elektronische versie9788412110104
StatusGepubliceerd - 6 okt 2019
EvenementIASS Symposium 2019 - 60th Anniversary Symposium of the International Association for Shell and Spatial Structures; Structural Membranes 2019 - 9th International Conference on Textile Composites and Inflatable Structures, FORM and FORCE - Barcelona, Spanje
Duur: 7 okt 201910 okt 2019

Congres

CongresIASS Symposium 2019 - 60th Anniversary Symposium of the International Association for Shell and Spatial Structures; Structural Membranes 2019 - 9th International Conference on Textile Composites and Inflatable Structures, FORM and FORCE
Land/RegioSpanje
StadBarcelona
Periode7/10/1910/10/19

Bibliografische nota

Publisher Copyright:
Copyright © 2019 by S: GABRIELE, F. MARMO, V. VARANO Published by the International Association for Shell and Spatial Structures (IASS) with permission.

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