Newreach Silica fume(Microsilica)-NR97

NR97 has the highest silicon content, which means it has high purity and low impurities. It can be used as a high-quality refractory material and plays an important role in many fields. Newreach Silica fume Grade NR97 is dry silica fume available in two main forms: Undensified-NR97U, and Densified-NR97D. They all meet the relevant standards of ASTM.

Category: SKU: dt-017


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.

(1) Silica fume in Concrete

. 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 % > 97.0
Cl % <0.3
Moisture % < 3.0
Bulk Density (Undensified) kg/m3 200 – 350
Bulk Density (Densified) kg/m3 500 – 700
Loss on Ignition(LOI) % <6.0
Specific surface(BET) m2/g 15 – 35





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 silica fume(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.



Newreach silica fume 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.



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 silica fume should be stored in dry conditions and not exposed to moisture.


Quality Assurance & Quality control 

Newreach Silica fume Management System for development, processing and supply of Newreach silica fume is certified to ISO 9001.  The chemical and physical properties of Newreach silica fume are regularly tested.

Additional information

Weight 750 kg
Dimensions 5 × 5 × 20 cm

Densified, Undensified

Pack size

25kg, 500kg, 1000kg