Experimental Study of 3D Concrete Printing Configurations Based on the Buildability Evaluation
Source abstract
Abstract
Different formulations for 3D printable cementitious composites have been developed for extrusion-based printing. However, there is a lack of configuration guides for actual printing operations, which integrate one printable material and one printing system closely. Three testing methods for configuration determination were proposed and tested with three material proportions, with initial setting times of 2, 8, and 13 min, respectively. The building index (BI) measures the layer stacking stability based on the material, scale, and device. The height reduction test (HRT) quantifies the shortening in the height of the printed filaments. The leaning angle (LA) refers to the maximum slope of the stacked layers. In this study, results showed the critical values were (a) 0.167 for the height reduction ratio (HRR), (b) 40° for LA, and (c) 0~19.1, 0~61.1, and 0~99.4 for BI of the three mixtures. They were the meta parameters used to guide the CAD sketching, material development, and printing configurations, including the printing speed and layer height.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Innovations in Concrete and Construction Materials · Additive Manufacturing and 3D Printing Technologies · BIM and Construction Integration
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518061, China
China State Construction Hailong Technology Co., Ltd., Shenzhen 518110, China
School of Architecture and Built Environment, The University of Newcastle, Callaghan, NSW 2308, Australia
Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR 999078, China
Funding
Shenzhen Research Grant · Multi-Year Research Grant, University of Macau · The Science and Technology Development Fund, Macau SAR
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