Research on Materials for Concrete (Mortar) 3D Printing Fabricated Components

Concrete (mortar) 3D printing is a new construction process. Due to the lack of sufficient tensile strength and ductility of traditional cement-based printing materials, and the printing process will lead to the stratification of materials, and most 3D printing is contour printing, only after manually filling concrete and steel bars, 3D printed buildings have a certain bearing capacity. This paper discusses the current research progress of concrete (mortar) 3D printing, the requirements of printing materials, as well as the research status and future research direction of bionic materials. Through analysis, combined with the new material UDHCC independently developed by this research team, it is confirmed that it is completely possible to realize layered pouring components with both flexural bearing capacity and ductility. It provides theoretical and technical basis for the development of 3D printing no-bar construction process.