Bubbles generated during the mixing and pouring process of concrete construction have always been a major challenge for construction workers. These bubbles not only affect the compactness and strength of concrete, but also increase the difficulty and cost of construction. Therefore, how to effectively eliminate bubbles in concrete has become the key to improving construction efficiency and quality. The importance of using defoamers in concrete as an effective means to solve this problem is self-evident.

The defoamer used in concrete mainly destroys the stability of bubbles by reducing the surface tension of water, causing the bubbles to quickly aggregate and disappear. This mechanism of action can not only effectively reduce the number of bubbles in concrete, but also improve the compactness and strength of concrete. In addition, defoamers can improve the fluidity of concrete, making it easier to pour and vibrate, thereby improving construction efficiency and quality.

In practical applications, the effectiveness of defoamers has been widely validated. Through experiments, it was found that with the increase of defoamer dosage, the slump of concrete gradually decreases, but the compressive strength and flexural strength gradually increase. This indicates that adding an appropriate amount of defoamer can improve the strength and performance of concrete while ensuring its fluidity. However, excessive use of defoamers may have a negative impact on the performance of concrete. Therefore, when using defoamers, it is necessary to strictly control their dosage to ensure their optimal effectiveness.

When using defoamers in concrete construction, the following points should be noted: Firstly, ensure the compatibility between defoamers and concrete to avoid adverse reactions. Secondly, when adding defoamers, they should be thoroughly mixed to ensure their full effectiveness. Finally, it is important to closely monitor the performance changes of the concrete and adjust the use of defoamers in a timely manner according to the actual situation.

Defoamers used in concrete play an important role in improving construction efficiency and quality. Reasonable use of defoamers can effectively reduce the number of bubbles in concrete and improve its compactness and strength. At the same time, defoamers can improve the fluidity of concrete and reduce construction difficulty and cost. Therefore, we should attach great importance to the use of defoamers in actual construction and strictly control their dosage to ensure construction quality and efficiency.