What is foam cement? Foaming cement It belongs to the bubble-shaped heat insulation material. Its prominent feature is the formation of closed foam holes in the concrete, making the concrete lightweight and thermal insulation. So do you understand the formula for foamed cement? The following small series gives you a brief introduction.
What is foam cement
Foamed cement is foamed by a foaming system of a foaming machine. The foaming agent is fully foamed mechanically, and the foam is evenly mixed with the cement slurry. Then the foaming machine pumping system is used for cast-in-place construction or mold forming. A new type of lightweight thermal insulation material containing a large number of closed pores formed by natural conservation. It belongs to the bubble-shaped heat insulation material, which is characterized by the formation of closed foam holes in the interior of the concrete to make the concrete lightweight and thermal insulation.
Application area
Foam concrete is widely used in energy-saving wall materials due to its good properties, and it has also been applied in other aspects. The application of foam concrete in China today is mainly in-situ foamed concrete thermal insulation cast-in-place, foam concrete face blocks, foam concrete lightweight wall plates, and foam concrete compensation foundations. However, by making full use of the good properties of foam concrete, it can continuously expand its application in construction engineering, speed up the progress of the project, and improve the quality of the project.
Foaming cement formula introduction
The cement foaming agent is a chemical admixture added to the cement. When the cement sets and hardens, it expands in volume and plays the role of compensating for contraction and tensioning of the reinforcing steel to produce prestressing force and adequately filling the cement gap. In fact, cement expanders use light metals (mainly aluminum powder, in recent years, iron powder, aluminum powder, etc.) to react chemically with alkaline cement to produce hydrogen, which causes the cement to expand in volume and increase the strength of the cement. Some people also called cement foaming agents. Should have the following properties:
(1) The foaming speed should be appropriate, too fast and too slow will affect the quality of the concrete.
(2) The generated hydrogen gas bubbles are small in diameter and evenly dispersed. In particular, pouring cement into the mold under the full volume state of the cement slurry requires more uniform dispersion to ensure the quality of the casting mold.
(3) The generation of gas must not affect the coagulation and solidification of the cement. If retarding the cement condensation, it will lead to a drop in cement strength or abnormal condensation of cement.
Cement foaming agent formula:
Raw materials
(1) Sodium chloride is an industrial salt.
(2) sodium thiosulfate see ten (11) anti-mite sleep deodorant. This agent is used as a basic additive. Use industrial products.
(3) Pull off the powder BX see Sanzhong (IX) hair dye. This agent is used as a dispersant. Use industrial products.
(4) Water reducer JN is also known as sodium methylnaphthalene sulfonate condensate. Tan powder.
Soluble in water, stable chemical properties, non-flammable, non-toxic. As a cement additive, it has a strong dispersion effect on cement particles, enlarges the contact area of ​​cement and water, promotes hydration reaction, reduces water consumption, and improves the strength, compactness, and impermeability of concrete. Use industrial products.
Editor's summary: The relevant information about what is the introduction of foamed cement and foamed cement formula is introduced here for everyone. I hope this article will help everyone. If you still have something you don't understand, you can leave a message to Xiaobian at the bottom. We will answer your questions as soon as possible.
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