Product Data Sheet Show all documents
Sika® Stabilizer VMA

Sika® Stabilizer VMA

Viscosity Modifying Admixture

Sika® Stabilizer VMA is a ready to use liquid based viscosity modifying admixture. Sika® Stabilizer VMA improves stability and segregation resistance of concrete mixes resulting in improved surface quality and aesthetics. Sika® Stabilizer VMA is suitable for various types of concrete. Sika® Stabilizer VMA has been found to improve plastic properties of Self Compacting Concrete (SCC) as well as high slump conventional concrete mixes and mixes containing manufactured sand and/or poorly graded aggregates. Sika® Stabilizer VMA helps stabilise the air void system in freshly mixed and placed concrete and increases the overall concrete stability. Sika® Stabilizer VMA is compatible with Sika ViscoCrete® high range water reducing admixtures and is recommended for precast and ready mix concrete applications.

Sika® Stabilizer VMA provides the following characteristics and advantages in the fresh concrete properties:
  • Strongly increased internal cohesion of the mix
  • Lower sensitivity against variations in the constituent materials and gap graded aggregates
  • Homogeneous mix
  • Less bleeding
  • Improves stability during transportation
  • Faster concrete consolidation
  • Reduced tendency to segregation
  • Sika® Stabilizer VMA assists the concrete placing in the following ways:
  • Reduction of compaction defects
  • Smoother concrete surfaces
  • Improved pumpability
  • Equipment is preserved and its service life is prolonged
Sika® Stabilizer VMA does not contain chlorides or any other ingredients which promote the corrosion of steel. It is therefore suitable for use in reinforced and prestressed concrete structures.
Product Data Sheet Show all documents

Usage

Sika® Stabilizer VMA has been specially developed for Self Compacting Concrete (SCC) and can also be used for other concretes, where improved stability during transportation and placing is required. Sika® Stabilizer VMA improves the fresh concrete properties of mixes with varying fines content, low cement content or concrete mixes with unfavourable grading curves. Sika® Stabilizer VMA is used for:
  • Self Compacting Concrete (SCC)
  • Shotcrete applications
  • Pumped concrete
  • Low fines content concrete
 

Advantages

Sika® Stabilizer VMA provides the following characteristics and advantages in the fresh concrete properties:
  • Strongly increased internal cohesion of the mix
  • Lower sensitivity against variations in the constituent materials and gap graded aggregates
  • Homogeneous mix
  • Less bleeding
  • Improves stability during transportation
  • Faster concrete consolidation
  • Reduced tendency to segregation
  • Sika® Stabilizer VMA assists the concrete placing in the following ways:
  • Reduction of compaction defects
  • Smoother concrete surfaces
  • Improved pumpability
  • Equipment is preserved and its service life is prolonged
Sika® Stabilizer VMA does not contain chlorides or any other ingredients which promote the corrosion of steel. It is therefore suitable for use in reinforced and prestressed concrete structures.

Packaging

Bulk deliveries ,1000 litre IBC,  205 litre drum and 10 litre container.
 

Colour

Brown liquid

Product Details

Product Information

Shelf life

12 months from date of production if stored properly in undamaged containers.

Storage conditions

Store  properly in undamaged containers, in dry conditions at temperatures between +5°C and +35°C, protected from direct sunlight and frost.

Stir thoroughly before use.

Density

1.02 g/cm3
Technical Information

Concreting guidance

  • The standard rules of good concreting practice, concerning production as well as placing, are to be followed.
  • Fresh concrete must be cured properly and curing applied as early as possible.

Application

Application Information

Dispensing

Sika® Stabilizer VMA is added to the gauging water at the plant or added on-site into the concrete mixer. When added on site the truck 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.

Sika® Stabilizer VMA shall not be added to dry cement.

Compatibility

Sika® Stabilizer VMA may be combined with many other Sika products.

Important: Always conduct trials before combining products in specific mixes and contact our Technical Service for information and advice about any specific combinations.
Consumption

Recommended dosage

0.1 - 1.0% by weight of cement

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