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How does a concrete foaming agent work?


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In construction, concrete is a widely used building material, and its performance is crucial to the safety and durability of buildings. Concrete foaming agents, essential additives in concrete preparation, gradually attract people's attention. This article will introduce the mechanism of concrete foaming agents and reveal its magical power to you.


(concrete foaming agent)

Characteristics and types of concrete foaming agents

Concrete foaming agent is a particular surfactant that can reduce the surface tension of liquid and produce a large amount of uniform and stable foam. These foams can significantly improve concrete's fluidity, stability, and strength and enhance its durability and crack resistance. Concrete foaming agents are mainly divided into polymers, surfactants and resins according to their chemical properties and application fields.

The action mechanism of concrete foaming agent

1. Improve the fluidity of concrete: By introducing foam, concrete foaming agents can significantly improve the fluidity of concrete. The foam's presence reduces the concrete's density, making it easier to mix and pump. At the same time, the uniform distribution of foam in concrete also helps improve its strength and durability. The development and maintenance of foam during pouring are critical factors, allowing the concrete mixture to fill the formwork better and reduce the formation of pores and air bubbles, thus increasing the density and strength of the concrete.

2. Improve concrete stability: The foam produced by concrete foaming agents has high strength and can effectively improve the stability of concrete. These foams play a supporting and stabilizing role during the hardening process of concrete, preventing segregation and bleeding of concrete. They also act as buffers during the cement hydration process, slowing down the heat and pressure fluctuations generated during the hydration process, thus improving the overall stability of the concrete.


(Cement with concrete foaming agent added)

3. Enhance the strength of concrete: After the introduction of foam, the porosity inside the concrete is significantly reduced, thereby improving the compactness of the concrete. The increase in density increases the strength of concrete, improving its load-bearing capacity and durability. The tiny pores formed by foam in concrete can effectively absorb and disperse the stress acting on the concrete surface, preventing the occurrence and development of cracks. At the same time, these tiny pores can also serve as storage spaces for hydrates, a product of the cement hydration process, thereby further improving the strength and durability of concrete.

4. Enhance the crack resistance of concrete: By introducing foam, the crack resistance of concrete is significantly improved. The tiny pores formed by foam in concrete can effectively absorb and disperse the stress acting on the concrete surface, preventing the occurrence and development of cracks. At the same time, foam can also improve the toughness of concrete, making it less likely to crack when subjected to impact or vibration. In addition, the stability of the foam can also inhibit volume changes caused by temperature changes, further improving the crack resistance of concrete.

5. Energy saving and emission reduction: Applying concrete foaming agents can also achieve energy saving and emission reduction. After using foaming agents, the same substantial volume weighs less, reducing energy consumption during transportation and pouring. In addition, foaming agents can also improve the thermal insulation performance of concrete and reduce the energy consumption of buildings. By optimizing the mix ratio and using foaming agents, more efficient energy utilization and reduced environmental pollution can be achieved.


(Cement with concrete foaming agent added)

Suppliers of concrete foaming agent:

TRUNNANO is the global leader of Low-Density Cellular Concrete (LDCC), Celluar Light Concrete (CLC) and advanced engineered foam solutions. Known globally for its commitment to research, innovation, and applied expertise, we have been providing engineered foam solutions since the early 2012's.

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