Silica fume for oil well grout

Microsilica is used in a variety of cementitious repair products. Mortars or grouts modified with Microsilica can be tailored to perform in many different applications—overhead and vertical mortars benefit from Microsilica’s ability to increase surface adhesion. Microsilica dramatically improves cohesiveness making it ideal for use in underwater grouts, decreases permeability in grouts used for post-tensioning applications and increases the resistance to aggressive chemicals. ROPERTIES&SPECIFICATIONS MODEL GSM-85PROPERTIES State Non-amorphous Ultrafine (non-crystalline) poweder Color Grey to medium grey powder Bulk density-Densified 500-700KG/M3 Bulk density-Undensified 200-350KG/M3 SPECIFICATIONS SiO2(Silicon Dioxide) Min.85.0% H2O Max.1.0% Loss on ignition Max.3% Fe2O3 Max.0.5% Al2O3 Max 0.45% CaO Max.0.70% Cl Max.0.09% Specific surface (m2/g) >18 & < 27 Retained on 45micron sieve Max.6.0% Pozzolanic Activity Index 105%@28d 85%@7d