Chen Mingxu, Guo Xiangyang, Zheng Yan, Li Laibo, Yan Zhen, Zhao Piqi, Lu Lingchao, Cheng Xin
School of Materials Science and Engineering, University of Jinan, Jinan 250022, China.
Shandong Provincial Key Lab. of Preparation and Measurement of Building Materials, University of Jinan, Jinan 250022, China.
Materials (Basel). 2018 Nov 29;11(12):2417. doi: 10.3390/ma11122417.
Rapid setting and low viscosity of sulphoaluminate cement (SAC) make it difficult to be extruded by 3D printing (3DP) technique. In this study, the effect of tartaric acid (TA) on printability, rheology and mechanical property of 3DP SAC paste is investigated. The experimental results indicate that the setting time, hydration evolution and apparent viscosity of SAC paste can be well controlled by adding a proper amount of TA to satisfy the requirements of 3DP. An excellent structure of SAC paste with the ultimate deformation rate less than 10% can be printed without compromising mechanical strength.
硫铝酸盐水泥（SAC）的快速凝结和低粘度使其难以通过3D打印（3DP）技术挤出。在本研究中，研究了酒石酸（TA）对3DP硫铝酸盐水泥浆体的可打印性、流变学和力学性能的影响。实验结果表明，通过添加适量的TA，可以很好地控制硫铝酸盐水泥浆体的凝结时间、水化过程和表观粘度，以满足3DP的要求。可以打印出具有优异结构的硫铝酸盐水泥浆体，其极限变形率小于10%，且不影响机械强度。
