ASTM C1240: 2005 Microsilica Silica Fume for Cement Additive

Product Description

Microsilica

Microsilica also known as Silica Fume. It's collected and packed from silicon metal or ferrosilicon factories directly, the automatic and integrated production process guarantees the consistent quality. Microsilica are classified as various grades and can be used in Concrete, Oilwell cement, Refractory and Fertilizer industries.

1).Appearance is as grey&white off.

2).High electrical resistivity

3).Low Permeability

4).Superior resistance to chemical attack from chlorides,acids and sulfates

5).Low chloride ion diffusion

6).High reactive Pozzolan

7).High temperature strength

8).Improved stability ingeothermal environment 

 

 

    Application area:                        

 

 

Silica Fume in High-Performance Concrete

• Very low permeability to chloride and water intrusion
• Extremely high electrical resistivity (20 to 100 times greater than ordinary concrete)
• Increased abrasion resistance on decks, floors, overlays and marine structures
• Superior resistance to chemical attack from chlorides, acids, nitrates and sulfates
• Very high-strength concrete

Silica Fume in High Strength Concrete

• Compressive strengths up to 20,000 psi (140Mpa)
• High modulus of elasticity exceeding 6 million psi (40,000 Mpa)
• High flexural strengths (2,000 psi @ 28 days) for airport pavements
• High early strengths for fast-track construction projects and precast applications

Silica Fume in Oil Well Grouting

• Improved flow, for easier, more effective application
• Dramatically decrease permeability, for better control of gas leakage
• Increased durability and compressive strength

Silica Fume in Refractory & Ceramics

• Improves particle packing, strength at high temperatures
• Reduces water while maintaining the same flow characteristics
• Promotes low temperature sintering & the formation of mullite
• Reduces permeability to avoid gas, slag and metal penetration

Other Application

• ELASTOMERS/POLYMERS - used as a filler in rubber or plastic.
• FERTILIZER - used in the defluorination process during the production of dicalcium phosphate (animal feed).
• FIBER CEMENT - used to improve strength and permeability of corrugated roofing panels.
• SHOTCRETE - is sprayed concrete, silica fume reduces rebound & increases bonding strength, productivity and savings in material cost
• Wallboard - used in commercial gypsum and concrete wallboard products for increased performance