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How to solve harmful foam from concrete?

Update: There are many reason that foam caused by the production of concrete construction, such as large bubbles during stirrin...
Summary:07-04-2021

There are many reason that foam caused by the production of concrete construction, such as large bubbles during stirring, surfactants containing polycarboxylate superplasticizers are aggregated into large bubbles and water reducing agents by vibrating action. Self-quality, free water that is not involved in hydration, grinding aids for cement incorporation, and template setting issues. The blister is beneficial, not only does not affect the strength of the concrete but also improves the durability of the concrete. The most common way to eliminate these large bubbles is to add a defoamer for concrete.

Concrete bubble solution

  1. Proper mixing time control and proper extension of the mold entry time. The stirring time is generally less than three minutes and less than 5 minutes. If it is too long, a large amount of air bubbles will be introduced, and too short will cause problems such as insufficient stirring. If the problem is serious, it is best to add an appropriate amount of defoamer for concrete. This is obvious compared to the control of various uncontrollable factors.
  2. Select high-quality release agent and template, and pay attention to layered fabric during construction, layering and vibrating.
  3. Replace the polycarboxylic acid water reducing agent. Generally, high-quality polycarboxylic acid water reducing agent is added with an appropriate amount of water reducing agent defoaming agent during production, and the polycarboxylic acid water reducing agent is incorporated into concrete to reduce a certain amount of bubbles which affect the appearance and strength of the concrete.
  4. Improve the overall construction technology of construction workers and conduct complete scientific training when necessary.

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

Phone: +86 (572) 2903236

Fax: +86 (572) 2905222

Wechat: 15534631339

Website: www.ruicoglobal.com 

Email: [email protected]