Condensed microsilica

Condensed microsilica is used in residential, civil and industrial construction as a highly active mineral additive to concrete and mortar, which increases the resistance of the finished mixture to aggressive environments, industrial factors and natural conditions. Uncompacted microsilica MK-85 is recommended for use in the production of cement mortars and dry building mixtures. Compacted microsilica MKU-85 is recommended to be added to reinforced concrete and concrete mixtures. The introduction of condensed microsilica significantly improves the following characteristics of the finished construction mixture or mortar:
• compressive and bending strength – pozzolanic activity of microsilica ensures the transition of unstable soluble calcium hydroxide into a strong crystalline hydrate of calcium silicate, which compacts the structure of concrete and increases its strength;
• plasticity – microsilica particles compact and stabilize the mixture, thereby increasing the workability and pumpability of the solution; REAGENTS FOR DRY BUILDING MIXES, CONCRETES AND MORTARS 22 REAGENTS FOR DRY BUILDING MIXES, CONCRETES AND MORTARS
• permeability – dust-like size of microsilica particles allows it to fill the voids between coarse-dispersed cement particles, thereby reducing the capillary porosity and permeability of cement stone;
• frost resistance – high resistance to low temperatures is a consequence of low permeability and high density of the mixture with the addition of microsilica;
• chemical resistance – to sulfates and other aggressive compounds due to the low content of free lime;
• corrosion resistance – concrete structures with microsilica content have greater resistance to carbonation and penetration of sea water chlorides, thereby protecting against corrosion;
• chemical resistance – the use of microsilica allows to reduce consumption by an
average of 40%.