Correctly add the defoamer to the concrete according to the recommended dosage and method, avoiding excessive or insufficient use. Mix evenly to ensure that the defoamer is evenly distributed in the concrete and fully utilizes its defoaming effect. Timely addition, adjust the amount and time of defoamer according to the actual situation during concrete mixing and pouring process.

Conduct compatibility testing before use to ensure that the defoamer is compatible with other components in the concrete. Defoamers should be stored in a cool, dry, and well ventilated place, avoiding direct sunlight and high temperature environments. Wear protective equipment during operation to avoid direct skin contact and inhalation of harmful gases.

Taking a large bridge project as an example, this article introduces a successful case of using defoamers in the concrete pouring process. By comparing the changes in appearance quality, strength, and other indicators of concrete before and after use, the significant effect of defoamers in improving concrete performance is demonstrated.

1. High performance concrete, when preparing high-performance concrete, adding an appropriate amount of defoamer can eliminate the bubbles generated during the mixing process, improve the compactness and strength of the concrete.
2. Prefabricated component production. During the production process of prefabricated components, the use of defoamers can ensure that the surface of the components is flat and smooth, reducing the amount of repair work.
3. Basement waterproofing engineering. In the construction of basement waterproofing concrete, the application of defoamers can prevent leakage problems caused by the generation of bubbles inside the concrete.

Through the above case analysis and application examples, we can have a more intuitive understanding of the application effect and value of defoamers for concrete in practical engineering.