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Technical spec.:
|
Item
|
Unit
|
Description
|
|
Appearance
|
white powder
|
|
|
Silicon dioxide content
|
%
|
≥95.0
|
|
Moisture
|
%
|
≤8.0
|
|
Trioxide content
|
%
|
≤2.0
|
|
Loss on ignition (950-1000°C)
|
%
|
≤6.5
|
|
pH-value (10% suspension)
|
8.0-11.0
|
|
|
Fineness (45um screen floating)
|
%
|
≤1.8
|
Range of Application:
Mainly used in cement or concrete admixture to improve the performance of cement and concrete. It is used in the preparation of extra-high strength (C70 above), wear/corrosion/freeze concrete used in dams, large reservoir, railway, bridges etc. And silica fume can be used in the production of refractory materials and ceramics; used as filler for paints, coatings, resins, rubbers etc.
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