Role of temperature in 3D printed geopolymers: Evaluating rheology and buildability

The mix design of binders with fluidity for pumping and at the same time consistency for printing is one of the most challenging tasks to make 3D printing technology feasible for large-scale buildings. On one hand high-fluid mixtures are better for pumping but on the other hand these do not support...

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Bibliographic Details
Published inMaterials letters Vol. 293; p. 1
Main Authors Souza, Marcelo Tramontin, Simão, Lisandro, de Moraes, Elisângela Guzi, Senff, Luciano, Pessôa, José Renato de Castro, Ribeirod, Manuel J, de Oliveira, Antonio Pedro Novaes
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier BV 15.06.2021
Subjects
3-D printers
Geopolymers
Materials science
Pumping
Rheological properties
Rheology
Three dimensional printing
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Summary:The mix design of binders with fluidity for pumping and at the same time consistency for printing is one of the most challenging tasks to make 3D printing technology feasible for large-scale buildings. On one hand high-fluid mixtures are better for pumping but on the other hand these do not support the overlapping of layers. For 3D printing geopolymers, this problem can be overcome by manipulating temperature. This work demonstrates how high-fluid mixtures can be quickly turned into buildable ones, continuously, from pumping to printing with a systematic heating process. Insight from this work provides valuable information to easily set the rheology and buildability of 3D printed geopolymers.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2021.1296801