Investigating the Pumpability and Extrudability of Concrete for 3D Printing

该项目旨在为建筑3D打印混凝土开发一种新的流变模型。3D混凝土打印是一项具有创新前景的施工技术，但阻碍其发展的主要障碍是缺乏合适的材料技术。在本研究中，将建立一个新的应力和时间依赖的流动模型，并将其作为计算模型实现。该模型将有助于研究不同混凝土配方、泵送和打印机参数对主要打印性能（即可泵性、可挤压性和可构建性）的影响。新模型还可以在大规模印刷过程中主动控制和修改流变参数，这在目前是不可能的。

The project aims to develop a new rheological model for 3D printable concrete for construction. 3D concrete printing is an innovative and promising construction technique, but the main impediment to progress is lack of suitable material technology. In this study, a new stress and time dependent flow model will be formulated and implemented as a computational model. The model will facilitate the study of the effect of different concrete formulations, pumping and printer parameters on the primary printing properties, namely, pumpability, extrudability and buildability. The new model will also enable active control and modification of rheological parameters on-the-fly during large-scale printing, which is not currently possible.