Misuse of cement foaming agent

At present, many foam cement construction workers are most concerned about the use of cement foaming agents. The prevailing view is that the amount of cement foaming agent is the key to the quality of the cement foaming machine. In fact, the following table shows the construction process. Common cement, water and cement foaming agent proportion cement cement foaming agent bulk density
230kg 140kg 1kg 300kg/m3
310kg 180kg 0.8kg 400kg/m3
450kg 300kg 0.6kg 600kg/m3
We strongly recommend that most construction companies use 60% water-cement ratio for foamed cement production.
About 60% of the water-cement ratio is favorable to ensure the strength of foamed cement and its insulation properties. Although the water-cement ratio decreased, the amount of blowing agent increased,
However, the density of the foamed cement can be reduced, the amount of cement can be reduced, and the strength can meet the previous requirements. This reduces its overall cost. At present, some manufacturers of machines and foaming agents are emphasizing the use of less foaming agents, which is actually misleading. Under the same premise, the amount of cement foaming agent has a direct relationship with the water-cement ratio, the water-cement ratio is large, and the cement foaming agent is less. According to the current settings of some machines, the water-cement ratio is generally large, and even some machines have the largest amount of foaming, and it is impossible to produce low-density foamed cement. Water-cement ratio is greater than the hazard of water-cement ratio, making the foamed cement loose, cracks more, strength decreases, due to the evaporation of water, a large number of capillary passages and holes are formed, so that the foamed cement has a high water absorption rate and the insulation performance is decreased. . To achieve the same strength, the higher the density, the greater the cost of cement, and the higher the insulation performance, but lower. When the ratio of water to cement is large, the selectivity of the cement foaming agent is lost, which means that the water-cement ratio is large. What kind of foaming property can be used, because when the amount of water in the foamed cement is large, the foamed cement is Cement foaming agents have low requirements for stable foam performance, and an important measure of good cement foaming agents is foam stability (ie, foam stability). In fact, many foaming agents (foaming amount) of the cement foaming agent are also available, and the foam stabilization performance is very poor. This makes the quality of foamed cement drop, but the cost goes up. The main reason for the increase in cost is the large amount of cement. I heard that someone had warmed up the foaming cement density as high as 500kg/m2. Although the cost of the blowing agent is low, the amount of cement is much larger, and the quality has also dropped a lot. At present, the water-cement ratio is generally high in the country, and the amount of foaming agent is about 0.4 kg, which leads to poor construction quality of foamed cement. For this reason, many people have a bad impression on foamed cement. This is a concern with many customers. The cost of cement foaming agents is relevant. The amount of foaming agent used above is based on the construction experience of the cement foaming machine and composite foaming agent produced by our company. for reference only! Welcome to discuss together

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