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Publication
Influence of supplementary cementitious materials on fresh properties of 3D printable materials
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Advisor(s)
Abstract(s)
The development of printers and materials for 3D Printing Construction during the last
two decades has allowed the construction of increasingly complex projects. Some of them have
broken construction speed records due to the simplification of the construction process, particularly
in non-standard geometries. However, for performance and security reasons the materials used had
considerable amounts of Portland cement (PC), a constituent that increases the cost and environmental
impact of 3D Printable Materials (3DPM). Supplementary Cement Materials (SCM), such as fly ash,
silica fume and metakaolin, have been considered a good solution to partially replace PC. This work
aims to study the inclusion of limestone filler, fly ash and metakaolin as SCM in 3DPM. Firstly, a
brief literature review was made to understand how these SCM can improve the materials’ 3DP
capacity, and which methods are used to evaluate them. Based on the literature review, a laboratory
methodology is proposed to assess 3DP properties, where tests such as slump and flow table are
suggested. The influence of each SCM is evaluated by performing all tests on mortars with different
dosages of each SCM. Finally, a mechanical extruder is used to extrude the developed mortars, which
allowed us to compare the results of slump and flow table tests with the quality of extruded samples.
Description
Keywords
3D printing Construction Materials development Fresh properties Supplementary cementitious materials . . Faculdade de Ciêrncias Exatas e da Engenharia
Citation
Teixeira, J.; Schaefer, C.O.; Maia, L.; Rangel, B.; Neto, R.; Alves, J.L. Influence of Supplementary Cementitious Materials on Fresh Properties of 3D Printable Materials. Sustainability 2022, 14, 3970. https://doi.org/10.3390/su14073970
Publisher
MDPI