As the most fundamental and widely used material in the construction industry, concrete's performance directly affects the quality and durability of engineering projects. However, the generation of bubbles is an unavoidable problem in the production, mixing, and pouring process of concrete. If these bubbles are not effectively controlled, they will form pores inside the concrete, reduce its structural strength and compactness, and even lead to surface defects and cracks, thereby affecting the overall quality of the project. Therefore, the importance of defoamers for concrete is self-evident.

Defoamer for concrete is a specially designed chemical additive that effectively reduces or eliminates bubbles in concrete by reducing the surface tension of the liquid or changing the characteristics of the bubble surface. These defoamers are typically composed of surfactants and other additives, and can be in liquid, powder, or solid form. During use, it only needs to be added to the concrete mixing water in a certain proportion or directly added to the mixing process to exert its effect.

Specifically, defoamers can break the surface tension of bubbles, causing them to quickly aggregate and disappear, thereby reducing the number of bubbles and improving the compactness and strength of concrete. In addition, defoamers can improve the fluidity of concrete, making construction more convenient and efficient, while enhancing the durability and appearance quality of concrete. In some large concrete structures, such as bridges and foundations of high-rise buildings, the use of defoamers is particularly important as it can effectively avoid safety hazards caused by minor quality issues.