LAUSR

Abstract 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.