In the hydrates of waste gypsum cement, in addition to calcium silicate hydrate cementing loose soil particles together,there is a lot of ettringite produced by the reaction of cement with gypsum.

• 用废石膏水泥加固时,其水化物不仅有与水泥相同的水化硅酸钙将松散的土粒胶结成整体,而且还产生钙矾石,其晶体膨胀填充孙隙使加固土强度进一步提高。