Choosing potassium sulfate as an activator to stimulate the activity of natural anhydrite, and modified its properties by adding Portlandcement and hemihydrate gypsum respectively.
选取硫酸钾作为激发剂对天然硬石膏进行活性激发，并分别掺入硅酸盐水泥与半水石膏进行改性。
2
The modified grouting cement introduced in this paper is one kind of new grouting material, being made by finely grinding Portland cement and mixed special grouting agent.