Preparation of magnesium oxysulfate cement as a 3D printing material

The mechanical properties and setting time of magnesium oxysulfate cement (MOS) were evaluated in the context of three-dimensional printing. MOS samples with MgO-to-magnesium sulfate mole ratios ranging from 2 similar to 9 and four water-to-solid weight ratios ranging from 0.27 similar to 0.57 were developed. The initial and final setting time was similar to 30 and 40 min, respectively. Moreover, MOS was prepared for 3D printing. The MOS micro-structure was examined. The average pore diameter was less than 20 nm, and the total porosity ranged from 11.76 to 37.39%. The gel pore content (<10 nm) and average pore diameter influenced the MOS compressive strength. (C) 2021 Elsevier Ltd. All rights reserved.

Automated summary

The study evaluated the mechanical properties and setting time of magnesium oxysulfate cement in the context of three-dimensional printing, showing its suitability for 3D printing. The examination of MOS microstructure revealed small pore diameter and varying total porosity within a certain range.