Microsilica for concrete

1.Very low permeability 2.High electrical resistivity 3.Increased abrasion resistance 4.Resistance to chemical attack

1.        Making high-grade concrete, can improve evidently the strength of concrete and the property of pumpage.

2.        Making high crack-resistance, self-waterproofing concrete, be used in the subway, tunnel and basement of high-rise structures.

3.        Used in maritime works and chemical industry. Due to the high densification propert, it can prevent effectively sulfate and chlorine ion from corrode, so that can extend the self-life of concrete.

4.        Effects on high-early strength concrete and strong concrete.

5.        In project item for water conservancy and bridge, the concrete not only needs basic quota mentioned above, but also its wear-resistant quality and abrasion resistance. Thus, adding silica fume is necessary.

6.        Effects on high and strong spray concrete for support in tunnel, subway, and large-scale foundation ditch.

7.        Used in the construction item under water, such as pier, huge dam and drilling platform.

8.        Used in road surface concrete of expressway and large-scale bridge.

ROPERTIES&SPECIFICATIONS

MODEL    GSM-85

PROPERTIES
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.1.5%
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

Microsilica for concrete