Air-entraining agents (AEAs) are additives used in dry mortar to introduce and stabilize microscopic air bubbles within the mortar matrix. These tiny air voids significantly enhance the mortar’s freeze-thaw resistance, workability, and overall durability, especially in cold and wet environments.
| Model | Type | Characteristics | Applications |
| A111 | Powder | Fine foam | Gypsum, Plaster mortar |
| A120 | Powder | Large foam, high air content | |
| A180 | Powder | Compounds product, Improve constructability |
Features of Air-Entraining Agents for Dry Mortar:
- Improves Freeze-Thaw Resistance: Air bubbles provide space for expansion of water as it freezes, reducing cracking.
- Enhances Workability: Makes the mortar easier to mix, pump, and apply.
- Increases Durability: Protects against cracking and scaling over time.
- Reduces Water Demand: Can improve the workability without additional water, helping to maintain strength.
Usage Guidelines:
- Dosage typically ranges from 0.02% to 0.1% of the binder weight.
- Mix thoroughly to evenly disperse the agent.
- Usually added during the initial mixing phase with dry components or with water in the mixing process.
Application Tips:
- Perform trial mixes to optimize dosage.
- Ensure good dispersion to achieve consistent air bubble distribution.
- Test the finished mortar for air content and freeze-thaw performance when necessary.
