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Air Entraining Agent in Concrete
  • Air Entraining Agent in Concrete

Air Entraining Agent in Concrete

Appearance:Colorless or Yellowish Liquid



Viscosity(20℃, Sp2,100rpm):300-1500

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Description of Air entraining agent

Air-entraining agent refers to introducing a large number of evenly distributed tiny air bubbles in the concrete mixing process to reduce the bleeding and segregation of the concrete mixture, improve workability, and significantly improve the frost resistance and durability of hardened concrete admixtures.

What is an air entraining agent?

Most of the air-entraining agents are anionic surfactants. On the water-air interface, the hydrophobic group is directionally adsorbed toward the air side. The hydrated particles form a hydrophobic adsorption layer and try to be close to the air surface so that a large number of fine air bubbles are generated during the mixing process of the concrete. These air bubbles have directional adsorption layers with the same charge, so they repel each other and can be distributed evenly.

On the other hand, many anionic air-entraining agents have calcium salt precipitation in the cement solution with high calcium content, and they are adsorbed on the bubble film, which can effectively prevent the bubbles from bursting.

Technical Parameters of air entraining agent

ItemsMain componentAppearanceDensity(g/cm3)pH(1% water solution)Refractive index(20℃)Viscosity(20℃,Sp2,100rpm)    
StandardAlkyl ether anionic surfactantColorless or Yellowish Liquid1.03±0.026.0-8.01.21~1.48300-1500 

Product characteristics of air entraining agent

1. It has the remarkable characteristics of fine, uniform, and lasting air bubbles.

2. It can improve the workability and pumpability of concrete.

3. Inhibits segregation and water secretion.

4. Improves freeze-thaw resistance and durability.

5. Reduce the slump loss.

6. It is suitable for formulating concrete for hydraulic, marine, port, culvert, tunnel, bridge, road, and other projects.

7. It is suitable for various mortars.

The use of air-entraining agents in concrete

1. Improve the workability of concrete mixtures.

2. Significantly improve the impermeability and frost resistance of concrete.

3. Reduce concrete strength. Generally, when the air content of concrete increases by 1%, its compressive strength will decrease by 4% to 6%, and its flexural strength will decrease by 2% to 3%.

Precautions of air entraining agent

1. This product is non-toxic, harmless, and biodegradable but not edible.

2. If it gets into the eyes, it should be rinsed with plenty of water in time.

3. If you cause allergies to part of the human body, you should consult a doctor in time.

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  • Luoyang Tongrun Info Technology Co., Ltd. ( is the world's leading nanomaterial technology developer and application manufacturer, the company has more than 20 years of industry experience, after years of scientific research and production, has been professionals in lightweight concrete and foam concrete solutions. We can supply concrete foaming agents, superplasticizers, aerogels and foam concrete strength enhancers for lightweight concrete mix, CLC blocks all over the world, suitable for ordinary cement foamed concrete cast-in-place, block, plate, insulation wall, etc.