The Preparation and Performance of the Cement-Based Concrete 3D Printing Materials

To reach the goal that 3D printing equipment requires and cost saving, this study used the ordinary Portland cement, mineral powder, accelerating agent and the other compound admixtures to prepare the cement-based concrete materials. The mix design, the kind and amount of accelerating agent and the dosage of compound adjusting retarders were studied to research the workability, viscosity and plasticity of the cement-based concrete materials. Facts proved that its performance are all good. And the setting time of that is adjustable of gradient form, which the range of the initial is 10-40mins and the final is 15-80mins. And the material is used to print a few simple fancy goods, which looks good, for flowerpot with roundness and square, penta-five pentagon and so on. It reflects that the speed is so far and controlled, the appearance looks knitted and layered.