Product Data Sheet Show all documents

Sika® Air Mix L/S

Air entraining admixture for concrete

Sika® Air Mix L/S has been designed and formulated to deliberately introduce air into concrete in the form of evenly sized and uniformly distributed micro bubbles.

Sika Air Mix LS provides the following beneficial effects to concrete:
  • Air entrainment considerably reduces the effect of freeze/thaw cycles caused by frost.
  • Improved durability of concrete exposed to tidal movements.
  • Improves the workability and reduces bleeding of mixes with harsh sands and aggregates.
  • Can be used to reduce mixing water without reducing workability and handling properties.
  • Easier and quicker mixing of concrete in agitator trucks.
  • Concrete in transit and placement is more cohesive and will segregate less.
  • Concrete becomes easier to place, resulting in less vibration and work effort to achieve proper compaction.
Product Data Sheet Show all documents

Usage

The use of Sika® Air Mix L/S significantly improves the workability and durability of concrete. The cohesion is also increased, thus reducing the risk of segregation, and bleed water movement is reduced. It is recommended that the use of air entraining admixtures be considered for concrete in applications such as:
  • Most forms of low to medium strength concrete
  • Dams, reservoirs
  • Airport runways, hardstands
  • Roading, pavements, footpaths, driveways
  • Slabs and walls
  • Most forms of structural concrete
 

Advantages

Sika Air Mix LS provides the following beneficial effects to concrete:
  • Air entrainment considerably reduces the effect of freeze/thaw cycles caused by frost.
  • Improved durability of concrete exposed to tidal movements.
  • Improves the workability and reduces bleeding of mixes with harsh sands and aggregates.
  • Can be used to reduce mixing water without reducing workability and handling properties.
  • Easier and quicker mixing of concrete in agitator trucks.
  • Concrete in transit and placement is more cohesive and will segregate less.
  • Concrete becomes easier to place, resulting in less vibration and work effort to achieve proper compaction.

Packaging

200 litres and bulk delivery

Colour

Light brown liquid

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

Sika® Air Mix L/S meets and exceeds all requirements of Australian Standard 1478.1-2000 for Air-entraining Admixture (AEA).
Product Information

Chemical Base

Water soluble liquid based on a synthetic chemical blend

Shelf Life

Twelve (12) months from date of manufacture if stored correctly as stated.

Storage Conditions

Store in original containers free from frost and between +5°C and +35°C.

Specific gravity

~ 1.0 kg/litre

Total Chloride Ion Content

Nil.
Technical Information

Specific Advice

Freezing Point: -5°C

Effect on Setting

None.

Application

Application Information

Dispensing

  • Sika® Air Mix L/S is added directly into the mixing water prior to addition of the aggregates. Do not add to the dry cement or aggregates.
  • Regular tests on the entrained air content should be undertaken with an air meter. If necessary the dosage may need to be adjusted to keep the entrained air content within the required limits.

Compatibility

  • Sika® Air Mix L/S is compatible with all types of Portland cement, including sulphate resistant cements.
  • Sika® Air Mix L/S is also compatible with other Sika admixtures - after consultation with the Sika Technical Dept. Note: Never pre-mix Sika® Air Mix L/S with other Sika admixtures, always add separately.
Consumption

Recommended Dosage

Typical dosage: 50 - 250 mls/m³ of concrete.  Exact dosage rates are determined by air meter tests on trial mixes.

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