Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 268, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2020.121709
Keywords
3-D printing; Additive manufacturing; Portland cement; Rheology; Hydrogel
Categories
Funding
- National Science Foundation (NSF) [CMMI-1563173]
- Tennessee Technological University (TTU), Center for Manufacturing Research (CMR)
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This study explores the use of hydrogel-forming polymers as printing aids for cement-based pastes. The results suggest an inverse relationship between gel and paste rheology and printability, providing a framework for selecting printing aids.
This work explores the use of hydrogel-forming polymers as printing aids for cement-based pastes. The principal results suggest an inverse relationship between gel and paste rheology and printability. The preferred gel is mechanically stiff, while the preferred printing paste is malleable and retains shape. The results, which include printability indexes (PI), mix formulation factors, and rheological measurements, form a framework for selection of gel-based printing aids and can be used as a basis for quality control of three-dimensional (3D) printed objects. Such gel-forming polymers may reduce the need for more complex admixture packages as printing aids. (C) 2020 Published by Elsevier Ltd.
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