To obtain high performance

low cost and extend technology application

industrial solid wastes were used to prepare sulfoaluminate cementitious material (SCM)

which was then processed into three-dimensional (3D) printing materials by using a suitable accelerator and retarder. Multidiscipline coupled-field analysis was used to determine the influence of slurry velocity and the quality that results from different water-cement ratios with the same nozzle diameter. It was proved that the SCM prepared from industrial solid wastes could meet the national standard GB-2007-R525. After improving their properties

the SCMs exhibit advantages of a controlled setting time of between 10 and 30 min

a rapid hardening and an early stable strength. The hydrated-specimen compressive strength reached 15-20 MPa after 2 h of curing. When the water-cement ratio of the 3D printing-material slurry exceeded 0.6

stacking and collapse phenomena might be resulted. When the water-cement ratio was below 0.4

the jetted slurry showed tailing phenomena that could affect the printing speed. A water-cement ratio of~0.5 with its corresponding nozzle size was most suitable for 3D printing applications.