BestFast AS206
Rapid-setting accelerator additive for sprayed mortar and concrete
Advantages:
Easy to control setting and hardening time depending on the dosage used.
Does not reduce the design strength of the sprayed concrete or mortar.
Increases the adhesion of sprayed mortar and concrete to structural walls and ceilings.
Minimizes concrete rebound and spillage, helping to save costs.
Alkali-free, non-irritating to the skin, and does not pollute water sources.
Chloride-free, preventing corrosion of reinforcing steel and steel fibers.
BestFast AS206
Technical summary
Category
Concrete Admixtures
Rapid-setting accelerator additive for sprayed mortar and concrete
BestFast AS206 is a high-tech dry powder additive made from special inorganic substances that regulates and accelerates the setting and hardening process of sprayed mortar and concrete. The product is suitable for use in tropical and hot weather conditions.
Technical documents
Product data
| Form: | White powder. |
|---|---|
| Chemical composition: | Inorganic-based with special active agents. |
| Packaging: | 20 kg/bag. |
| Shelf life: | 06 months in unopened packaging, stored in a dry, cool place at a temperature from +5°C to +30°C and away from direct sunlight. |
Applications
BestFast AS206 is designed for use in both wet-spray and dry-spray processes in the following fields:
Temporary and permanent protection of rock walls in tunneling and mining works.
High-quality sprayed concrete for reinforcement and repair works.
Drainage works using the dry-spray process.
Advantages
Easy to control setting and hardening time depending on the dosage used.
Does not reduce the design strength of the sprayed concrete or mortar.
Increases the adhesion of sprayed mortar and concrete to structural walls and ceilings.
Minimizes concrete rebound and spillage, helping to save costs.
Alkali-free, non-irritating to the skin, and does not pollute water sources.
Chloride-free, preventing corrosion of reinforcing steel and steel fibers.
Application instruction
Dosage
The typical dosage of BestFast AS206 is 2-6% by weight of cement.
The dosage depends on the requirements for setting and hardening time and on conditions such as the application method, cement type, cement content, water/cement ratio, surface condition, and the application environment.
It is recommended to test the product beforehand to determine the appropriate dosage for each specific application.
Reference dosage
Reducing concrete rebound or applying to vertical walls: 3-5%.
Requirement for early strength or spraying onto ceilings: 4-6%.
Application
The effectiveness of BestFast AS206 depends on the content, type, and storage time of the cement.
The effectiveness also depends on the temperature of the sprayed concrete, the application area, the substrate condition, and the sprayed concrete application method.
In the dry-spray process, the properties of BestFast AS206 depend significantly on the amount of water added during spraying.
BestFast AS206 is added to the concrete using a dosing device for powder materials.
Application notes / limitations
If BestFast AS206 turns into a liquid state, the container and dosing pump line must be thoroughly cleaned before storing and pumping the product.
Metal parts in direct contact with BestFast AS206 must be made of stainless steel to prevent corrosion.
When using sulfate-resistant cement, the strength of the mortar or concrete may develop more slowly.
Product performance may vary depending on the specific application conditions at each site.
BestFast AS206 is a high-tech dry powder additive made from special inorganic substances that regulates and accelerates the setting and hardening process of sprayed mortar and concrete. The product is suitable for use in tropical and hot weather conditions.