Study on Preparation and Mechanical Properties of Magnesium Phosphate Cement

The orthogonal experiment method is utilized in this paper to get a comprehensive analysis of the compressive strength of magnesium phosphate cement (MPC) to prepare the cement with the best performance. What’s more, a further study is conducted on the compressive strength of paste and the compressive strength and the flexural strength of mortar, and the last is the adhesive properties. The results showed that the optimal ratio was obtained; the setting time of the optimum mix ratio of cement is 13min, which meets the requirements of rapid repair; the development of the strength of the paste and mortar all have the characteristics of early strength and fast hardening. Generally, the strength at 7d can reach the 90% of the strength at 28d, and the compressive strength of the paste at 28d can reach to 79.8MPa. The compressive strength and flexural strength of mortar at 28d are 53.2MPa and 11.3MPa, respectively.