Products - Costar C Air II

Costar C Air II

COSTAR C AIR II is a powdered air entraining admixture for concrete and cementitious materials. COSTAR C AIR II will improve the freeze/thaw, workability and durability of concrete and cementitious materials and is compatible with cementitious materials containing other admixtures.

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Description

COSTAR C AIR II is a powdered air entraining admixture for concrete and cementitious materials. COSTAR C AIR II will improve the freeze/thaw, workability and durability of concrete and cementitious materials and is compatible with cementitious materials containing other admixtures.

Features / Benefits
  • Provides a stable air void system with proper bubble size and spacing. This air void system protects concrete against damage caused by repeated freeze/thaw cycles
  • Improved resistance to de-icing salts and sulfate attack
  • Less mixing water can be used per yard (meter) of concrete and place ability is improved
  • Decreases bleeding and segregation
Primary Application
  • Ready mix concrete
  • Structural concrete
  • Mass concrete construction
  • Exterior concrete
  • Underground construction
  • Architectural concrete
  • Paving concrete

 

Technical Data

COSTAR C AIR II is typically dosed at a rate of 1 bag per 9 cubic yards of concrete or 517 lb. of cementitious material. The amount of COSTAR C AIR II required to achieve 5-6% air content is also dependent on the type of cement, fineness of sand, temperature, design of the mix, other admixtures, etc. Concrete mixes must be tested regularly to confirm that proper air content is achieved. COSTAR C AIR II is compatible with most admixtures including air entraining agents, accelerators, most water-reducers, retarders, shrinkage reducers, corrosion inhibitors, viscosity modifiers, and micro silica; however, each material should be added to the concrete separately.

Dosage and Mixing Time

Dosage and mixing time depends on mix design and thickness of mold

Download Technical Datasheet

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