In the construction industry, concrete is one of the most important building materials, and its performance and quality are directly related to the safety and service life of buildings. However, in the process of concrete production and construction, due to mixing, pumping and other operations, it is easy to introduce air and produce a lot of foam. These foam will reduce the strength, durability and impermeability of concrete, thus affecting the overall quality of concrete. In order to effectively eliminate these foam and improve the performance of concrete, defoamers for construction industry came into being.

The main function of defoamers is to reduce the bubbles generated during the mixing, transportation, and pouring processes of concrete, thereby improving its compactness and strength, and enhancing its physical and chemical properties. In the production and construction process of concrete, the generation of bubbles is inevitable, but the presence of bubbles can lead to a decrease in the strength and durability of concrete, and even affect the appearance and service life of concrete. Therefore, the use of defoamers is particularly important.

Concrete powder defoamers are usually composed of various surfactants and additives, and their working principle is to reduce the surface tension of the concrete slurry, making it easier for bubbles to burst and disappear. Defoamers can quickly penetrate the surface of bubbles, forming a thin film that inhibits the generation and stabilization of bubbles, thereby effectively reducing the number and size of bubbles.

The use of concrete powder defoamers can bring multiple advantages. Firstly, it can enhance the strength of concrete. Defoamers can reduce the number of bubbles, thereby improving the compactness and strength of concrete, ensuring the safety and durability of the structure. Secondly, the use of defoamers can improve construction performance. It can improve the fluidity and operability of concrete, facilitate pouring and forming, and reduce difficulties during the construction process. In addition, by improving the strength and compactness of concrete, the amount of cement and other materials used can be reduced, thereby lowering the overall construction cost. At the same time, defoamers can enhance the durability of concrete, improve its impermeability and freeze-thaw resistance, and extend the service life of buildings.

In practical applications, concrete powder defoamers are widely used in various construction projects, such as high-rise buildings, bridges, tunnels, and underground engineering. For example, in the concrete pouring of high-rise buildings, the use of defoamers can effectively prevent the generation of bubbles, ensuring the strength and stability of the concrete. In bridge construction, the application of defoamers can improve the compressive strength and crack resistance of concrete, ensuring the safety of bridges.

With the continuous improvement of concrete performance requirements in the construction industry, the research and application of concrete powder defoamers are also constantly advancing. In the future, the types and properties of defoamers will become more diverse, and the development of environmentally friendly defoamers will become a trend to meet the needs of sustainable development. In addition, combined with modern technology, intelligent defoamers are expected to play a greater role in concrete production and construction.