Method for the Enhancement of Buildability and Bending-Resistance of Three-Dimensional-Printable Tailing Mortar (2019-02)¶

In recent few years, significant progress has been made in developing various 3D printing techniques to accommodate the need for constructionscale 3D printing. Many attempts have been conducted to explore the potential of 3D printing in the building and construction industries, such as D-shape, contour crafting, and concrete printing [16]. Such techniques are well-suited to the production of one-off, complex structures that would often be difficult to produce using traditional manufacturing methods. Cementitious materials that are compatible with 3D printing promote rapid application of this innovative technique in the construction field with the added advantages of low cost, high efficiency, design flexibility, and being environmentally friendly [610]. It is critical to ensure a complementary connection between the designs of the printable mix and printing machine. Currently, various 3D-printable mixtures have been continuously developed, such as high-performance composites [11,12] and fiber-reinforced mixtures [13], among others. A number of specific implementation practices have been presented, for example, a five-story apartment 3D printed by WinSun [14], the Big Delta project [15], a castle printed in situ [16], and architectural elements [17], etc. All of these projects demonstrated the great potential and feasibility of 3D printing in constructing large-scale building components.