Cementitious composites blended with high Belite sulfoaluminate cement and medium-heat Portland cements were optimized to achieve both favorable 3D printability and durability performance. The influence of the hybrid cement ratio on the rheology and the hardened properties, such as mechanical properties, drying shrinkage, and carbonization resistance, was systematically investigated. The results revealed that the mixture incorporated with 80% CSA-HB cement exhibited excellent early strength, and a 1d compressive strength higher than 30 MPa was achieved. Hybrid mixing of CSA-HB and P·MH reduces the super-early age hydration heat by 37.8%. Meanwhile, the 28-day carbonization depth of the mixture with 80% P·MH cement was 52.4% lower than that comprising a high content of CSA-HB. The designed mixtures were compatible with the printing process and validated by the printing practice of 9.4m-span arch components using a large-scale robotic printer.

与高贝利特硫铝酸盐水泥和中热波特兰水泥混合的胶结复合材料经过优化，以实现良好的 3D 可打印性和耐久性性能。系统地研究了混合水泥配比对流变学和硬化性能的影响，如力学性能、干缩率和抗碳化性能。结果表明，掺入 80% CSA-HB 水泥的混合料表现出优异的早期强度，1d 抗压强度高于 30 达到了兆帕。CSA-HB和P·MH的混合混合使超早龄水化热降低了37.8%。同时，80%P·MH水泥混合料的28天碳化深度比高CSA-HB混合料低52.4%。设计的混合物与打印过程兼容，并通过使用大型机器人打印机的 9.4m 跨度拱形组件的打印实践进行验证。