Microsilica weiß Typ ZZ

Item number: B0031

Microsilica - the pozzolan for designers. High purity, economical and good quality.


container size

Starting from 13,50 €

including 19% VAT , plus shipping

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There are variations of this item. Please select the variation you wish.

Our white microsilica is a highly pure pozzolanic additive for the production of special types of concrete of your own recipe. You can produce high-performance and ultra high performance concrete (UHPC) yourself. In addition, you can design concrete mixes with a high degree of safety against efflorescence.

With its extremely small particle size, microsilica is about 100 times finer than cement. Thus, it is highly reactive and is ideally suited to fill the pore spaces between the cement particles. In addition, microsilica (silica fume) greatly improves the flowability of self-compacting concrete. This creates a particularly tight and solid concrete.

A dosage of 5% by weight of the amount of concrete contained is recommended for the production of ultra high-performance cement (UHPC). The water to cement ratio should be set between w/c = 0.2 and w/c = 0.35 and a PCE superplasticizer should be used.

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Properties TYPE BB TYPE ZZ
SiO2-Content min. 90 % ca. 95.6%
ZrO2-Content 2 - 4  % ca. 2.6%
Fe2O3-Content < 0.5 % not specified
Bulk density 430 g/l 380 g/l
Moisture not specified ≤  1.0 %
Loss on ignition 0,5 - 1,5 % not specified
pH-value 2 - 4 3
R457 whiteness 88 82
D10 0.5 μm 0.3 μm
D50 1.5 μm 3.7 μm
D90 3 μm 12.1 μm
D98 4.2 μm 17.2 μm

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