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Silica fume, also known as microsilica, is an amorphous (non-crystalline) polymorph of silicon dioxide, silica. It is an ultrafine powder collected as a by-product during silicon and ferrosilicon alloy production.
According to the SiO2 content, our products can arrange form grade 85% to grade 98%. According to the bulk density, we can divide our products into densified silica fume and undensified silica fume.
. Can increasing strength, density
. Frost resistance, Early strength.
. abrasion resistance performance.
. anti-cavitations
(2). Silica fume in Cement
Strengthen cement impermeability.
Strengthens the fiber cement product
(3) Silica fume is used in refractory
Greatly improved products strength and high-temperature performance.
(4) Other Applications for Silica Fume
. Rubber industry
. Anti-caking industry
. Pellet binder
. Waterglass industry
Chemical and physical properties
|
Properties |
Unit |
Specification |
|
SiO2 |
% |
> 90 to 97 |
|
Specific surface area |
m2/g |
15 - 35 |
|
H2O (when packed) |
% |
< 3 |
|
Bulk Density (U) |
kg/m3 |
200 – 350 |
|
Bulk Density (D) |
kg/m3 |
500 – 700 |
Application
Suitable for all concrete and mortar applications where the benefits of silica fume are required:
· Higher compressive strength
· Increased durability – Longer service life for structures
· Enhanced rheology – Control of mixture segregation & bleed
Newreach Microsilica into the concrete mixer and mix thoroughly with the other mixture ingredients, adopting a procedure that ensures full dispersion of the product. Dosage varies depending on application. Contact Newreach for information and advice.
Description
Newreach Microsilica is a dry silica fume available in two main forms. Undensified and Densified. In use, it acts physically as an interactive filler and chemically as a highly reactive pozzolan. A key ingredient in many construction materials, Newreach Microsilica is used in cement products as a process aid, to improve ingredient dispersion and to improve hardened properties and overall durability.
Packing
Available in a range of packaging options, including:
· 25 kg paper bags & 1000 kg jumbo bags.
· Big bags in various designs & sizes
· Bulk road tanker
Please contact our representative for more details
Storage & handling
Newreach Microsilica should be stored in dry conditions and not exposed to moisture.
Quality Assurance & Quality control
Newreach Silicon Materials’ Management System for development, processing and supply of Newreach Microsilica is certified to ISO 9001. The chemical and physical properties of Newreach Microsilica are regularly tested.
