Microblock®

Microblock

Microblock® is a slurry of amorphous, spherical microsilica of high surface area. Developed as an anti gas migration additive it imparts important properties for zero free water, low fluid loss, low viscosity, early strength development, high compressive strength, improved bonding, stable cement slurry & corrosion resistance to cementing fluids.

 

Applications

  • Gas tight cementing
  • Lightweight cementing
  • Horizontal cementing
  • Slim hole cementing
  • High strength cement
  • Corrosion resistant cement

 

Packing 

  • 200 litre drums
  • 1000 litre IBCs

Storage conditions

  • Product becomes unusable after freezing, even if thawed
  • Product is subject to settling & should be agitated prior to use 

Shelf life

If stored correctly, the product has a shelf life of ca 12 months 

Specifications

  • SiO2 :                      90 % min
  • Particles > 45 μm : 0.1 % max
  • pH:                         4.0 – 7.0
  • Viscosity:               60 mPas max
  • Specific gravity:    1.38 – 1.42
  • Solid content:        48.0 – 52.0 %

Typical physical data

  • D50: ca 0.15 µm

  • D90: ca 0.75 µm

Test methods

Test methods are available upon request