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Usage of Micro Silica Fume

Microsilica is used in concrete

When it is used in concrete, it acts as filler and as a cementitious material. The small microsilica particles fill spaces between cement particles and between the cement past matrix and aggregate particles. Microsilica also combines with calcium hydroxide to form additional calcium hydrate through the pozzolanic reaction. Both of these actions result in a denser, stronger and less permeable material.
Microsilica: We have three factories in Shanxi, Yunnan and Qinghai Province, China. Stable quality and reasonable price.

Application:

10% to 15%:  High strength structural columns
10%:  Flatwork
8% to 10%: High durability / Low permeability such as bridge decks or parking structures
8% to 15%:  by weight of cement but as an addition not replacement
Microsilica has been used as an addition to concrete up to 15 percent by weight of cement, although the normal proportion is 7 to 10 percent. With an addition of 15 percent, the potential exists for very strong, brittle concrete. It increases the water demand in a concrete mix; however, dosage rates of less than 5 percent will not typically require a water reducer. High replacement rates will require the use of a high range water reducer.

Function of adding Microsilica (Silica Fume):
• Increase durability
• Reduces concrete permeability
• Improves resistance to corrosion
• Shotcrete - lower rebound  

Microsilica is used in refractory

Microsilica in refractory enhancing the fluid of pouring refractory, reducing the volume of used water, be easy to shape, and raising the production efficiency. Because of its ultra microstructure for gap filling, the compact and intensity of refractory gain rising by a wade
margin. Microsilica in refractory is a highly effective pozzolanic material, so it's easy to come into being Mullet Phase, under the premise that Al2O3 exists, enhance elevated temperature strength and thermal shock of refractory.
Microsilica: We have three factories in Shanxi, Yunnan and Qinghai Province, China. Stable quality and reasonable price.
Function of adding Microsilica (Silica Fume):
• Microsilica in refractory is used in unshaped refractory
• Microsilica in refractory is used in gunned refractory materials to improves adhesion in castables and minimizes rebound loss
• Microsilica in refractory is used in shape refractory

Advantage:

1. Cement or concrete admixture: micro silicon powder is able to fill cement intergranular pore, at the same time and the hydration products generate gels, magnesium oxide reaction to generate gel with alkaline materials.

2. Refractory additives: high quality micro silicon powder is mainly used for high performance refractory castable, bricks, ladle material, air brick, gravity type refractory pouring injection materials and dry and wet method.

3. metallurgy pellet binder: micro silicon powder mixed with water after making pellet sintering, natural drying or not plus binder, pellets in very few impurities, can return to electric furnace smelting as materials.

about us

Luoyang Ruowen Trading Co., Ltd is professional in exploiting, producing and selling microsilica (silica fume ), we built our own producing and processing bases in Gansu, Neimeng, Anhui and Sichuan province, our monthly output is more than 4000tons. 

RW Microsilica( silica fume price, cement silica fume, silica fume cement, corcrete cement silica fume  has a high content of SiO2, and each content target is outstanding with stable quality. It is widely applied to concrete, water conservancy and hydropower, marine anticorrosion construction and refractory material professing, road, bridge and special cement, chemical industry, electron and other industries.

Relying on many years of a good reputation and good service, we have many customers from at home and abroad. We have established longterm and steady business relationship with them. RW Microsilica products are not only selling well in China, but also exported to the United States, , Australia,south east area, middle-east area and other countries and regions around the world.

Why Us?

Our company is willing to take a sincere attitude and cooperation with
you.
(1) Quality
We have our own test lab in factory and supply stable and reliable
microsilica to our customers.
(2) Price
We have 3 microsilica factories in Shanxi, Qinghai and Yunnan, our price
is low and reasonable.
(3) Convenient
We have warehouse in Luoyang and have transportation partner. Delivery
is fast and easy.
(4) Service
Our sales groups are positive attitude, and 24 hours feedback service to
ensure the service is good.