Product Data Sheet Safety Data Sheet Show all documents

Sika® Air Pak

Air entraining concrete admixture

Sika® Air Pak is a powdered air entraining admixture which is formulated from synthetic surfactants. Sika® Air Pak is packaged in water soluble bags to enable ease of addition and handling.

Sika® Air Pak has the following characteristics:
  • Consistent bubble size and spacing
  • Increase in cohesion
  • Provides improved rheology
  • Less segregation and bleed
  • Packaged in water soluble bags for easy dispensing
Product Data Sheet Safety Data Sheet Show all documents

Usage

Typical applications include:
  • Concrete requiring high resistance to freeze/thawing cycles
  • Concrete that will be exposed to tidal conditions, splash zones and de-icing salts
 

Advantages

Sika® Air Pak has the following characteristics:
  • Consistent bubble size and spacing
  • Increase in cohesion
  • Provides improved rheology
  • Less segregation and bleed
  • Packaged in water soluble bags for easy dispensing

Packaging

60 x 0.25 kg water soluble bags in sealed tub

Colour

Pale Grey Powder

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

Conforms to the requirements of BS EN 934-2 Table 5
DoP 65221305, certified by Factory Production Control Body 0120, and provided with the UKCA mark
Product Information

Chemical Base

Powdered blend synthetic surfactants

Shelf Life

12 months from date of production if stored properly in undamaged unopened, original sealed packaging.

Storage Conditions

Store in dry conditions at temperatures between +5°C and +25°C. Protect from direct sunlight and frost.

Bulk Density

0.95 kg/L

Total Chloride Ion Content

<0.1% w/w (chloride free)

Equivalent Sodium Oxide

<0.4 % w/w (alkali content)

 
Technical Information

Specific Advice

  • Sika® Air Pak is only suitable for use in concrete with <50mm slump, i.e. semi-dry/extruded concretes, subject to trials to ensure mixing efficacy.
  • Due to the significant number of constituent, mix design, manufacture and placing related factors outside Sika’s control, bubble spacing determination should be carried out by the concrete producer to ensure compliance with BS EN 934-2. Bubble spacing should be completed using the specific concrete constituents/admixture combinations.
  • Overdosing may cause an excessive increase in air-entrainment that will lower the compressive strength.

Application

Application Information

Dispensing

  • Sika® Air Pak should not be added to the gauging water.
  • When added directly to a truck mixer, the mixer shall rotate its drums at maximum revolutions for at least 1 minute per m³ concrete and a minimum of 5 minutes to achieve a uniform mix.

Compatibility

Sika® Admixtures

  • Compatibility information available on request.

Trials are recommended before combining products in specific mixes. Please contact our Technical Service Department for information and advice about any specific combinations.
Consumption

Recommended Dosage

1-4 bags/m3

Documents