what role does microsilica have-pg电玩城

microsilica and silicon powder - also known as silica fume - or silica superfine powder, microsilica is produced during smelting ferrosilicon and industrial silicon sio2 and si rapid gas and oxygen in the air oxidation and condensation to form a kind of ultrafine silica powder material. how it works: microsilica is able to fill cement intergranular pore, at the same time and the hydration products generate gels, and alkaline materials magnesium oxide reaction to generate gel. in cement concrete, mortar and refractory castable, mixed with the right amount of silica fume, can play a role as follows: 

1, significantly improve the compressive strength, flexural strength, permeability, anti-corrosion, impact resistance and wear resistance. 

2, with water, prevent the segregation and bleeding, greatly reduce the effect of concrete pumping resistance. 

3, prolong the service life of concrete significantly. especially in the chlorine salt erosion, pollution sulfate attack, high humidity and other harsh environment, can make the durability of concrete double or even several times. 

4, and reduce the jet concrete and castable french grey, improve the single layer thickness. 

5, is the necessary ingredients, high strength concrete for c150 concrete engineering application. 

6, have the effect of cement, about 5 times the ordinary concrete and low cement castable the application can reduce the cost and improve the durability.

7, effectively prevent the occurrence of concrete alkali aggregate reaction.

8, improve the compactness of cast refractory. in concrete engineering, according to use a function, generally suggest adding quantity of cementitious materials 5% 10%, and used with water reducing agent. 

the microsilica and cement, aggregate join stirring at the same time, in strict accordance with the standard construction, we must strengthen maintenance. storage and transportation of microsilica packed in plastic woven bag sealing, note waterproof in the process of storage and transportation