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Bemsun supply Microsilica, densified Microsilica, undensified Microsilica, Microsilica additive in cement, conrete


What is the Microsilica
Microsilica, also called as silica fume, silica dust, which is a by-product of producing silicon metal or ferrosilicon alloys.

Microsilica consists primarily of amorphous (non-crystalline) silicon dioxide (SiO2). Because of its fine particles, large surface area, and the high SiO2 content,

Microsilica Performance in Cement

Microsilica can fill the pores of cement particles and generate gel with hydration products and then magnesium oxide

reacts with alkaline gel material.

Microsilica is used as an admixture for cement-based concrete,mortar,refractory castable. When you mixed the proportion

amount of microsilica in cement-based concrete, mortar, refractory castable, then it can provide you pefect peformance

as following:

1. Significantly increased compression, bending, impermeability, anticorrosive,anti-shock and wearable for cement-based

concrete, mortar, refractory castable.

2. With water retention, prevent segregation, bleeding, and significantly reducing the role of concrete pumping resistance

3. Significantly extend the service life of concrete. Especially used in chloride, polluted erosion,sulfate attack, high humi

dity and other harsh environments, can improve the durability of concrete double or even several times

4. Significantly reduction in jet landing castable concrete and ash, rasie a single spray layer thickness.

5. Is the necessary component of high-strength concrete and have already applied in C**0 cement-based conrete

6. With above five times the efficacy of cement, can improve the durability and lower the cost in ordinary cement concrete castable

7. Effectively prevent the occurrence of concrete alkali aggregate reaction

8. Improve the compactness of cast refractory material. When coexist with Al2O3, more easy to generate mullite phase and enhance its

high temperature strength, thermal shock resistance

Microsilica is a very reactive pozzolan when used in concrete

a. Microsilica admixture used in high performance concrete

Performance:

Can prevent concrete from the corrosive chloride and seawater

Improving the high resistivity of concrete

Improving the wear resistance of building, like flight runway, aircraft carrier deck, high speed way

Can improve strong chemical corrosion resistance

b. Microsilica admixture used in high intensity concrete



Performance:

Improving the compressive strength of concrete to **0MPa

Improving the modulus of elasticity of concrete to ****0MPa

Can make the flexural strength of flight runway to *4MPa with *8days

Apply for projects and precast assault with high early strength



c. Microsilica admixture used in shotcrete concrete

Performance:

Reducing the shotcrete rebound rate loss to *0%

Improving the construction efficiency, one sprayed layer thickness up to *2inch

Strength the resistivity and lower the permeability

Can retain compressive strength and flexural strength


BEMSUN, the local producer for Micro silica in China. With Microsilica Additive in cement and concrete, build a durable future into the infrastructure of seaport, high building, reservoir dam, Railway, driver road, bridge, metro,tunnel, airport runway, coal lane and etc