Product Data Sheet Show all documents

Sika® Plastiment®-250 PK

Water Reducing And Retarding Concrete Admixture

A Liquid concrete plasticizer and water reducing agent with set retarding effect.

Sika® Plastiment®-250 PK provides the following properties:
  • Increased setting time in hot weather.
  • Improved workability without increase water content.
  • Reduced water without loss of workability.
  • Increased strengths.
  • Reduced shrinkage and creep.
  • Long lasting control of slump loss
  • Better surface finish.
  • Chloride free-does not attack reinforcement
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Product Data Sheet Show all documents

Usage

Sika® Plastiment®-250 PK is used as a general purpose admixture where the placing conditions for high quality concrete are more demanding elevated temperatures such as:
  • Fair faced concrete.       
  • Pumped concrete.
  • Ready mix concrete.
  • Areas where large volumes must be placed at one time.
  • High mechanical strengths are required.  

Advantages

Sika® Plastiment®-250 PK provides the following properties:
  • Increased setting time in hot weather.
  • Improved workability without increase water content.
  • Reduced water without loss of workability.
  • Increased strengths.
  • Reduced shrinkage and creep.
  • Long lasting control of slump loss
  • Better surface finish.
  • Chloride free-does not attack reinforcement

Packaging

05 ltr jerry can

20 ltr plastic can

200 ltr drum

1000 ltr IBC

Bulk supply in tanker is possible on demand

Colour

Brown Liquid

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

Sika® Plastiment®-250 PK complies with A.S.T.M. C494-92 Type A, B and D.
Product Information

Chemical Base

Organic Polymer Blend

Shelf Life

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

 

Storage Conditions

The product must be stored properly in undamaged, unopened original sealed packaging in dry conditions at temperatures between +5° C and +35° C. Protect from direct sunlight and frost.

pH-Value

≥ 6

Total Chloride Ion Content

Nil (EN 934-2)

Specific gravity

1.155 ± 0.03

Application

Application Information

Compatibility

Sika® Plastiment®-250 PK is compatible with all types of Portland cement including S.R.C.

Dispensing

Sika® Plastiment®-250 PK should be dispensed directly into the mixing water or when 70% of mixing water has been added to the concrete. When accidental overdosing occurs, Sika® Plastiment®-250 PK does not entrain excessive amounts of air; however, the set retarding effect increases. During this period the concrete must be kept moist in order to prevent premature drying out.
Consumption

Recommended Dosage

0.3-1.0% By weight of Cement content. The effective dosage of Sika® Plastiment®-250 PK depends on the type of cement and fine aggregate. The dosage rate can be increased to overcome difficulties in quality of cement and aggregates, high temperature and difficult placing conditions. Concrete trial mix shall be carried out to confirm the effective dosage and its effect to concrete properties.
Application steps

CLEANING OF TOOLS

Clean all equipment and tools with water immediately after use.

 

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