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Additives to increase the strength of concrete

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EXOwet N5 (Ethoxylated alcohol) EXOwet N5 is a universal agent for wetting cement grains during the production of concrete. The product has excellent resistance to hard water. It may be used in...

Alkoxylated alcohols, Ethoxylated alcohols

Microsilica (Silica fume) Ready to use Microsilica is a by-product of silicon metal production. This is a densified or undensified amorphous powder, obtained by the metallurgical process of silicon in...

POLIkol 300 (PEG-6) POLIkol 300 belongs to the group of polyoxyethylene glycols (PEG with an average molecular weight of 300). INCI: PEG-6. The product is a colourless liquid well soluble...

Polyethylene glycols

POLIkol 400 (PEG-8) POLIkol 400 belongs to the group of polyoxyethylene glycols (PEG with an average molecular weight of 400). INCI: PEG-8. The product is a colourless liquid, well...

Polyethylene glycols

POLIkol 600 (PEG-12) POLIkol 600 belongs to the group of polyoxyethylene glycols (PEG with an average molecular weight of 600). INCI: PEG-12. The product is available as a high viscosity...

Polyethylene glycols

POLIkol 800 (PEG-16) POLIkol 800 belongs to the group of polyoxyethylene glycols (PEG with an average molecular weight of 600). INCI: PEG-16. The product is a high viscosity liquid or...

Polyethylene glycols

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Additives increasing the strength of concrete

Additives increasing the strength of concrete are used to improve the mechanical properties of concrete, such as resistance to compression, stretching, abrasion or swelling. They are used to modify a concrete mix or hardened concrete. The following types of additives can be distinguished:

Additives increasing the strength of concrete are used to improve the mechanical properties of concrete, such as resistance to compression, stretching, abrasion or swelling. They are used to modify a concrete mix or hardened concrete. The following types of additives can be distinguished:

mineral additives (e.g. microsilica)—due to its very small particle size, SiO₂ penetrates the spaces between cement grains, filling the resulting micropores. Because of this, it increases its strength;

cement additives (e.g. aluminous cement)—used in specialised applications, such as the production of heat-resistant products, repair of concrete under chemically aggressive conditions, or for waterproof repairs;

chemical additives (e.g. calcium chloride)—they accelerate the setting of concrete and increase its strength;

fibrous additives (e.g. steel fibres and polymer fibres)—they increase resistance to cracking and temperature changes;

additives for a pozzolanic reaction (e.g. fly ash)—they cause the formation of micro-bubbles in the concrete, which increases its volume and reduces the unit weight.

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