To demonstrate printability and fire performance of 3D printable fibre reinforced cementitious materials at elevated temperatures, large-scaling printing and fire performance testing are required for engineering applications. In this work, a mixture design of 3D printable fibre reinforced cementitious composite (3DPFRCC) for large-scale printing was developed. A structure with dimensions of 78 × 60 × 90 cm (L × W × H) was printed by a gantry printer in 150 min, which demonstrates that the developed 3DPFRCC mixture possesses good buildability. The rheological property, setting-time, and mechanical properties under normal and elevated temperatures of the developed 3DPFRCC were then characterised. Final results indicate that the developed 3DPFRCC is suitable for engineering applications due to its good printability and mechanical properties under normal and elevated temperatures.

为了证明3D可打印纤维增强胶凝材料在高温下的可印刷性和防火性能，工程应用需要进行大规模打印和防火性能测试。在这项工作中，开发了用于大规模印刷的3D可印刷纤维增强水泥基复合材料（3DPFRCC）的混合设计。用龙门打印机在150分钟内打印出尺寸为78×60×90 cm（L×W×H）的结构，这表明所开发的3DPFRCC混合物具有良好的可建造性。然后表征了所开发的3DPFRCC在常温和高温下的流变性能，凝固时间和机械性能。