Recent progress of magnesium oxychloride cement: Manufacture, curing, structure and performance

Magnesium oxychloride (MOC) cement has attracted much attention because of its excellent mechanical properties, but its poor water resistance has limited the development. Aiming at stimulating the development of MOC cement, this review examines the detailed modification methods that have been generated in the relevant fields, with a focus on massive literature. A lot of work in the aspects of matrix performance optimization, various modifiers have been devoted to enhance MOC cement, in which the research on improving water resistance was highly concerned. Meanwhile, the ways to characterize the micro and macro performance of MOC cement were introduced, such as strength, softening coefficient, microstructure and phase characterization and so on. It is concluded that the compound additives containing phosphate and polymer materials have a good effect on improving the water resistance. Besides, according to the characteristics of MOC cement, the emphases of future research are prospected.