首页|Geometric quality evaluation of three-dimensional printable concrete using computational fluid dynamics

Geometric quality evaluation of three-dimensional printable concrete using computational fluid dynamics

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The importance of geometrical control of three dimensional(3D)printable concrete without the support of formwork is widely acknowledged.In this study,a numerical model based on computational fluid dynamics was developed to evaluate the geometrical quality of a 3D printed layer.The numerical results were compared,using image analysis,with physical cross-sectional sawn samples.The influence of printing parameters(printing speed,nozzle height,and nozzle diameter)and the rheological behavior of printed materials(yield stress),on the geometrical quality of one printed layer was investigated.In addition,the yield zone of the printed layer was analyzed,giving insights on the critical factors for geometrical control in 3D concrete printing.Results indicated that the developed model can precisely describe the extrusion process,as well as the cross-sectional quality.

digital fabrication3D concrete printinggeometric qualitycomputational fluid dynamicsprinting parametersyield stress

Weijiu CUI、Haijun SUN、Jiangang ZHOU、Sheng WANG、Xinyu SHI、Yaxin TAO

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Department of Civil Engineering,Qingdao University of Technology,Qingdao 266000,China

Innovation Institute for Sustainable Maritime Architecture Research and Technology,Qingdao University of Technology,Qingdao 266000,China

Intelligent Construction Lab,Qingdao University of Technology,Qingdao 266000,China

Shandong Zhaojin Industrial Development Co.,Ltd.,Yantai 264000,China

Architectural Engineering Institute,Weifang Engineering Vocational College,Weifang 261000,China

Qingjian Group Co.,Ltd.,Qingdao 266000,China

College of Architecture and Urban Planning,Qingdao University of Technology,Qingdao 266000,China

Department of Structural Engineering and Building Materials,Ghent University,Ghent 9000,Belgium

Institute of Building Materials,ETH Zurich,Zurich 8064,Switzerland

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National Natural Science Foundation of ChinaOpen Fund of innovation institute for Sustainable Maritime Architecture Research and Technology(iSMART)Qingdao University of TechnologyKey Technology Research and Development Program of ShandongIndustrial Research Fund from Ghent University

520082242020-0312019GSF110004IOF.PRO.2022.0010.01

2024

10.1007/s11709-024-1080-4

结构与土木工程前沿
高等教育出版社

结构与土木工程前沿

CSTPCDEI
影响因子：0.082
ISSN：2095-2430
年,卷(期)：2024.(7)