As a fundamental material in the construction industry, the performance of concrete is directly related to the safety and durability of building structures. However, during the process of concrete mixing, transportation, and pouring, a large number of bubbles are often generated due to chemical reactions or mechanical interactions between materials. If these bubbles are not eliminated in time, it will lead to problems such as decreased concrete strength and uneven surface. Therefore, the application of defoamers in concrete is particularly important.

Defoamers reduce the surface tension of the concrete liquid phase, making the bubble film unstable and prone to rupture. Meanwhile, defoamer molecules can also adsorb onto the surface of bubbles, forming a thin film that prevents further growth and coalescence of bubbles. When choosing a concrete defoamer, factors such as its compatibility with concrete raw materials, its impact on concrete performance, and economy should be considered. High quality defoamers should be able to effectively eliminate bubbles in a short period of time without affecting key properties such as concrete strength, fluidity, and setting time.

The application of defoamers is particularly crucial in the preparation process of special concrete such as high-strength concrete and self leveling concrete. By adding defoamers reasonably, the homogeneity and surface quality of concrete can be significantly improved, meeting the high requirements of engineering for concrete performance.