Sell Cement additive in concrete admixture C12A7 Amorphous calcium aluminat

Amorphous calcium aluminate accelerator Cement additive of 5200-6000 m2/g


Description:
Amorphous calcium aluminate is the basic raw material of a new Accelerator, its principal constituent is the non-crystalline calcium aluminate. Appearance of light gray-green powder.

Properties of amorphous calcium higher reactivity than the crystalline product, used in conjunction with silicate cement, can achieve a higher degree of responsiveness and efficiency. Non-crystalline calcium aluminate reacts unexpectedly fast with plaster and water to produce ettringite; adds its appropriate to ordinary silicate cement, the initial setting in less than a minute to complete. Addition of ettringite structural stability, good strength. While ettringite volume expansion, formation of prestressed concrete and shrinkage resistance.

Specification:
Physical and chemical indexes of non-crystalline calcium aluminate:

Specification  Chemical composition(%)
  CaO  Al2O3  SiO2  Fe2O3  TiO2  MgO
High-calcium products  50-55%  38-44%  ≤5.0  ≤2.0  ≤2.0  ≤2.0
High-alumina products  ≤48  ≥42  ≤5.0  ≤2.0  ≤2.0  ≤2.0
Non-crystallization rate   Over 95%
Specific surface area   5000-6000 m2/g

Packing:1 MT big bag or as per customer’s requirement
Amorphous Calcium aluminate advantages:
l Accelerated and rapid harding
l Defending against leakage
l High-strength and super high-early strength;
l Low profile;
l Enhanced persistence,
l Good adhesion

Non-crystalline calcium aluminate usages:

l Accelerated and rapid harding as cement accelerator,mainly in tunnels,
underground engineering

l Defending against leakage in nuclear power plant and other major projects