Factors that affect the quality of foam concrete
The uniformity control factor. Control factors that determine the uniformity of foam cement slurry include whether the design parameters of static mixer are reasonable, including its length, number of internal mixing pieces and angles, as well as the arrangement methods. The optimal match is achieved by these parameters. The slurry will not be uniform if the match is too close. Different designs are made by different manufacturers. The core of the matter is whether they can be all reasonable and if they have been optimized and tested before they are released.
Factors that control density. The main factor determining foam cement slurry density, is the amount of foam slurry entering a static mixer. This means that the ratio between cement slurry and foam slurry must be reasonable and accurate. The lighter the paste, the higher the bubble-to–paste ratio. Density fluctuations can occur if the ratio between the two is not controlled. It is important to know if the equipment has a foam or slurry control mechanism and how automated it is. Currently, some equipment does not have a control mechanism, and it is difficult to regulate the density. This is the core technology that will allow for its automatic control.
How do I add silica fume
Silicon oxide powder is an ultrafine powder containing amorphous silicon dioxide. This occurs after silicon vapor passes through the flue. The silicon vapor then becomes oxidized by melting high-purity quartz and ferrosilicon alloy.
Function of silica smoke: The silica fume can be mixed into foam concrete to have a good pozzolanic and particle filling effect. This can increase the concrete's pore structure as well as compactness. Freshly mixed silica fume foam concrete is low in bleeding and has a higher viscosity. Enhance workability and foam stability, which can increase strength and resistance to corrosion, as well as the chemical resistance of foam concrete. High-performance foam concrete that is high in strength, durability, water resistance, chemical resistance and resistance to heat.
The strength of foamed concrete will increase if the silica fume (the amount of silica to replace cement) is less than 20%. The strength of foamed concrete will drop significantly if the silica fume content exceeds 20%. Silica fume is usually found in foam concrete at 5% to 15%. To ensure silica fume in foam concrete, superplasticizer must also be used. This will allow for the foam concrete to retain its fluidity and strengthen the silica fume.
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