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Concrete accelerator
Concrete accelerator
Hotline: +86-371-62986100
Concrete accelerator
Introduction
Concrete Mix Accelerator Amorphous C12A7 Rapid Setting For Shotcrete Accelerator
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.
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.
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 |
|||||
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CSA Cement
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