Silicon Powder Increase The Intensity

- Sep 04, 2017 -

Silicon Powder Increase the intensity

1. Main application fields of silica powder

1. Applied in concrete industry

The application of silica powder as an admixture to the concrete industry is a domain of the study of the comprehensive utilization of silica powder in China * * *, the results * * * and the application * * wide area. With silicon powder particles small, than the area is large, with high purity Sio2 and strong volcanic activity such as physical and chemical characteristics of the silicon powder as admixture in concrete to improve the concrete performance in many aspects.

(1) improve the early strength of concrete and the ultimate strength of * *

Foreign studies have shown that when the silicon powder to replace rate was less than 30% of cement, the steam temperature is 80 ℃, the compressive strength of mortar one day 2 times that of the doped silicon powder (100 mpa), if using autoclaved curing, is almost 3 times (150 mpa); Adopting standard curing, the compressive strength of mortar is obviously improved. Canada, h. h. Bache proposed that when the silicon powder and high alkali agent composite, when using can make the concrete water gel (W/C + Si) fell to 0.13 to 0.18, is filled with silicon powder compact between cement particles, the compressive strength of concrete mixed with silicon powder 3-5 times. At present, the United States, Denmark, Norway and other countries have used silica powder to make the concrete with a strength of 1100kg/cm2, and the process is simple and the economic benefits are good, so it is widely used.

(2) increase the density

The silicon powder added to the concrete increases the silicon content of the reaction, and under the electron microscope, the crystal growth of the cement stone space with silica powder concrete is observed. In addition, the silica powder particles are very small and fill the concrete micropores uniformly. The cement injection method was used to determine the micropore volume of concrete cement with silica powder.

Microsilica powder is a very active raw material which can greatly improve the quality of the project. Especially in the enhancement of engineering strength, early and strong effect is obvious. The microsilica powder is globular under the microscope, and after adding water, it can produce a hydrogel with water under the action of water, and it has a network chain structure, which can act as a coating water. The water can be released by the external force, and the hydration and strength of the cement can be increased.

Compared with the imported raw materials potassium acid calcium, dalian one thousand mining of micro silicon powder can totally replace it in the heat preservation material, and in many ways have * * * * advantage: price is only 1/5 of the potassium acid calcium, can better guarantee the project late strength. The incorporation of microsilica powder is about 3% ~ 10%, which can greatly improve the engineering quality. With these advantages, the insulation material industry is gradually understanding and using silica powder. Its usage is very broad, can make the following decorative material:

1. Polymer mortar, heat preservation mortar and interfacial agent for wall insulation.

2. Cement polymer waterproof material.

3. Light aggregate insulation and energy-saving concrete and products.

4. The inner and outer wall building is processed with putty powder.

1. Main application fields of silica powder

1. Applied in concrete industry

The application of silica powder as an admixture to the concrete industry is a domain of the study of the comprehensive utilization of silica powder in China * * *, the results * * * and the application * * wide area. With silicon powder particles small, than the area is large, with high purity Sio2 and strong volcanic activity such as physical and chemical characteristics of the silicon powder as admixture in concrete to improve the concrete performance in many aspects.


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