Air-entraining additive HEMIX OXY

Additive description

HEMIX OXY is an air-involving additive and in terms of consumer properties meets the requirements of GOST 24 211-2008 "Additives for concrete and mortars. General technical conditions".

Field of application

HEMIX OXY is used:

• for production of concrete when increased frost resistance is required;
• when there are cycles of alternate freezing and thawing;
• in hydraulic engineering construction;
• in production of concrete for road and airfield pavements.

Advantages

The use of HEMIX OXY allows:

• produce concrete and products with increased requirements for frost resistance;
• obtain high stability of air in concrete;
• improve cohesion, viability and rheology of the mixture;
• increase water resistance of concrete;
• improve deformation, thermophysical heat and sound insulation properties of concrete;
• obtain stable air content during transportation of the mixture;
• produce products with a cohesive homogeneous structure, which eliminates the possibility of corrosion of reinforcement

Mechanism

HEMIX OXY is designed to introduce a standardized volume of air into the mix. The additive creates a system of closed and evenly distributed air pores in the hardened concrete.

The small, spherical pores increase the flowability of the concrete mixture. As a result, the workability of concrete is improved, the duration of molding of products is shortened, compaction of the mixture is ensured, and delamination during transportation and placement in molds is reduced.

During freezing, the conditionally closed porosity allows water to expand without destroying the concrete body.

Dosage

HEMIX OXY should be injected in an amount of 0.05-0.25% of the weight of cement. It should be taken into account that the air involved may affect the strength properties of the concrete.

The effectiveness of the air-entraining admixture may vary depending on the type of binder, aggregates, mixture mobility and other factors. Therefore, the exact dosage should be selected under laboratory conditions.

Application

• Mix the additive before use.
• Add HEMIX OXY either to the mixing water or to the ready-mix concrete.
• Allow sufficient mixing time after adding the admixture.

Important: HEMIX OXY must not be added to dry mix.