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 C150 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 140MPa
Improving the modulus of elasticity of concrete to 40000MPa
Can make the flexural strength of flight runway to 14MPa with 28days
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 50%
Improving the construction efficiency, one sprayed layer thickness up to 12inch
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
