Denesified silica fume can improve concrete's compressive and bond strength, and abrasion resistance; reduces permeability.
Yu Lin® Denesified silcia fume
Description
The American Concrete Institute (ACI) defines Microsilica (also known as Silica Fume) as “very fine noncrystalline silica produced in electric arc furnaces as a by-product of the production of elemental silicon or alloys containing silicon”
Microsilica consists of very fine vitreous particles with a surface area ranging from 15 to 30 m2/g, with particle approximately 100 times smaller than the average cement particle. Because of its extreme fineness and high silica content, Microsilica is a highly effective pozzolanic material.
Microsilica is used in concrete to improve its properties. It has been found that Microsilica greatly improves compressive strength, bond strength, and abrasion resistance; reduces permeability; and therefore helps in protecting reinforcing steel from corrosion.
National Silica Fume Standard
Mandatory Chemical &Physical Requirement | Unit | USA ASTM C1240 | European EN 13263 | Japan JIS A6207 | China GB/T 18736 | Korean KS F2567 | Vietnam TCXDVN 311 |
SiO2 | % | >85 | >85 | >85 | >85 | >85 | >85 |
SiO3 | % |
| <2.0 | <3.0 |
| <3.0 |
|
Cl- | % |
| <0.3 | <0.1 | <0.2 | <0.3 |
|
Free CaO | % |
| <1.0 | <1.0 |
|
|
|
MgO | % |
|
| <5.0 |
| <5.0 |
|
Free Si | % | <0.4 |
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Moisture | % | <3.0 | <3.0 | <3.0 | <3.0 | <3.0 | <3.0 |
Loss On Ignition (L.O.I) | % | <6.0 | <4.0 | <5.0 | <6.0 | <5.0 | <6.0 |
Specific Surface Area (B.E.T) | % | >15 | 15-35 | >15 | >15 | >15 | >12 |
Pozzolanic Activity | % | >105 at 7 days accel. curing |
| >95 at 7 days >105 at 28 days standard curing | >85 at 28 days Standard curing |
| >85 at 7 days standard curing |
Retained on 45u | % | <10 |
|
|
| <5.0 | <10 |
Variation From Average on 45u | % | <5 |
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Packaging
Microsilica is supplied in a range of packagings:
800~900kg jumbo PP bag with PE liner
The Jumbo bag conforms to GB/T10454 and EN ISO 21898
with UV-proof function and anti-aging character.
25kg woven bags with PE liner;
25kg paper bags or plastic woven bag
10kg paper bags;
Storage and Transportation
Yu Lin set up own factory and own warehouse which lies thousands of squares.
Containerized Shipment
Break-Bulk shipment
