Amorphous calcium aluminate is the basic raw material of a new type of rapid setting agent. Its main component is amorphous aluminate. Appearance is light gray-green powder. Mostly used in cement quick setting agent, concrete quick setting agent.
The properties of non-crystalline calcium aluminate are higher than that of crystalline products. When used in combination with ordinary silicates, it can achieve higher reactivity and efficiency. The amorphous calcium aluminate can react unexpectedly with gypsum and water to form ettringite; add an appropriate amount of it to ordinary portland cement, and the initial setting can be completed in less than one minute. In addition, ettringite has a stable structure and good strength. At the same time, the volume of ettringite expands, forming prestress and shrinkage resistance.
The effects of non-crystalline calcium aluminate can be obtained according to the amount of addition: rapid setting and ultra-rapid setting; high strength and ultra-high early strength; low shrinkage; enhanced durability; good adhesionOur products have been exported to Germany, Korea, Japan and other countries.
The main uses of non-crystalline calcium aluminate: sprayed concrete, repair mortar, porcelain tile adhesive, floor additive, water-proof and leak-proof mortar.Amorphous calcium aluminate has been widely used abroad, and has been widely used in important large projects such as tunnels, underground engineering (nuclear power plants).
High-quality bauxite and lime are smelted in an electric furnace in a certain proportion.
Physical and Chemical Indexes of Amorphous Calcium Aluminate:
|Specification||Physical and chemical indicators (%)|
|High aluminum type||≤48||≥42||≤5.0||≤2.0||≤2.0||≤2.0|
|Amorphous rate||More than 90|
|Specific surface area||4000-5500 cm2 / g|