microsilica/silica fume

Densified Grain&Powder Microsilica
Bulk Density:550-700kgs/m3
SiO2:90%Min.
Qualify: SGS certificate with ASTM C-1240 Standard

 Microsilica. silica fume  concrete in the application

1,Manufacture high-strength concrete (C70 above), significantly enhanced the strength of concrete and pumping performance;