920microsilica【价格 厂家 供应】-pg电玩城

920 microsilica: the appearance is gray powder, sio2 content is 85~87%, and there are encryption and semi-encryption products, which can be applied to large concrete engineering, mortar, floor, pipe pile, etc., as necessary admixture.

the 920 microsilica can fill the pores between the cement particles, and at the same time, it can form gels with hydration products and form gels by reacting with magnesium oxide, a alkaline material. in the cement based concrete and mortar, the addition of appropriate amount of silica fume can play the following role:

1. significantly improve the anti-pressure, anti-folding, anti-permeability, anti-corrosion, anti-impact and anti-wear properties

2. it can protect water, prevent segregation, bleed water and greatly reduce concrete pumping resistance

3. significantly extend the service life of concrete. especially under the harsh environment of chlorine salt pollution erosion, sulfate erosion and high humidity, the durability of concrete can be doubled or even multiplied

4. substantially reduce the landing dust of sprayed concrete and castable, and increase the thickness of single spraying layer

5. as a necessary component of high-strength concrete, c150 concrete has been applied in engineering

6. it has the effect of about 5 times of cement (application in ordinary concrete and low-cement castable can reduce cost and improve durability)

7. effectively prevent the occurrence of concrete alkali aggregate reaction

920 microsilica is widely used in refractory industry. practical application in the following aspects:

1. substitute pure aluminum oxide mud for refractory materials

2. as an additive to produce amorphous and shaped refractory products, its strength and high-temperature performance are greatly improved

3. as an integral pour and coagulant for steel ladle