Highly effective metakaolin

Product Description

Metakaolin is a dehydroxylated form of the clay mineral kaolinite.
Rocks that are rich in kaolinite are known as china clay or kaolin,
traditionally used in the manufacture of porcelain. The particle size
of metakaolin is smaller than cement particles, but not as fine as
silica fume.Considered to have twice the reactivity of most other
pozzolans, metakaolin is a valuable admixture for concrete/cement
applications. Replacing portland cement with ***0% (by weight)
metakaolin produces a concrete mix, which exhibits favorable
engineering properties, including: the filler effect, the acceleration
of OPC hydration, and the pozzolanic reaction. The filler effect is
immediate, while the effect of pozzolanic reaction occurs between 7 to
*4 days.

Advantages

Increased compressive and flexural strengths
Reduced permeability (including chloride permeability)
Reduced potential for efflorescence, which occurs when calcium is
transported by water to the surface where it combines with carbon
dioxide from the atmosphere to make calcium carbonate, which
precipitates on the surface as a white residue.
Increased resistance to chemical attack
Increased durability
Reduced effects of alkali-silica reactivity (ASR)
Enhanced workability and finishing of concrete
Reduced shrinkage, due to "particle packing" making concrete denser
Improved color by lightening the color of concrete making it possible
to tint lighter integral color.
1 Al2O3, % 43,8 2 Si2O2, % *3,*2 3 Fe2O3, % 0,*5 4 TiO2, % 0,*8 5 CaO% 0,*5 6 reflection coefficient, % *7.5 7 water solubility, % 0.*3 8 abrasivity, мг *9.4 9 powder 2 mcm, % *5.8 *0 ***3 sieve residue, % 1.*2 *1 tempering losses(ППП) % 1,2 *2 bulk weight ,kg/m3 **4,0 (before)/**7,0 (after) *3 Удельная поверхность м2/г *5 *4 specific humidity % not more than 1% *5 appearance white colour powder *6