Amorphous Calcium aluminate advantages: 1 Accelerated and rapid harding 2 Defending against leakage 3 High-strength and super high-early strength; 4 Low profile; 5 Enhanced persistence, 6 Good adhesion Non-crystalline calcium aluminate usages: 1Accelerated and rapid harding as cement accelerator,mainly in tunnels,underground engineering 2Defending against leakage in nuclear power plant and other major projects