How to choose defoamer in concrete?

The strength change of concrete is mainly affected by the air content of concrete after adding defoamer and air-entraining agent. Experiments show that with the increase of the amount of defoaming agent, the concrete's air content and water reduction rate decrease. In severe cases, bleeding and bottom digging occur, which makes the concrete workability worse. . We should pay attention to three points during use:

     1.Defoaming agent used in the production of concrete with polycarboxylate superplasticizer, will reduce the gas content of polycarboxylic acid superplasticizer, and the concrete slurry will be more viscous. Agent, eliminate the uneven large bubbles in the polycarboxylic acid, and introduce uniform small bubbles, which can increase the peace of concrete.

2. The defoaming agent has strong dispersibility with water and admixture, and it is easy to separate after long time standing. It is recommended that stirring be continued during this period.
3. The antifoaming agent may reduce its performance due to alkalinity. Please avoid using it at a pH value of 10 or higher.

Amber Zhang Ms.

Foreign trade 

Zhejiang Ruico Advanced Materials Co., Ltd. (Stock No.873233)

Add: No.188, Liangshan Road, Linghu Town, Nanxun District, Huzhou City, Zhejiang Province, China 313018

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