Product Data Sheet Safety Data Sheet Show all documents

Sika® Plastocrete®-903

Water -Reducing and Retarding Concrete Admixture

Sika® Plastocrete®-903 is new developed concrete admixture as a liquid set retarding type with a plasticizing effect. Substantial water reduction can be achieved without loss of workability.

Sika® Plastocrete®-903 provides the following properties:
  • Extended setting times at elevated temperatures
  • Longlasting control of slump loss
  • Improved workability without increased water content
  • Reduced water without loss of workability
  • Increased strengths with less cement
  • Reduced shrinkage and creep
  • Improved surface finish
  • Chloride-free does not attack reinforcement
Product Data Sheet Safety Data Sheet Show all documents

Usage

Sika® Plastocrete®-903 is used as set-retarding concrete admixture where high quality is required at difficult conditions, especially at high ambient temperatures. It extends the peroid of time when fresh concrete can be placed and compacted. Sika® Plastocrete®-903 is most suitable for ready-mixed concrete with PFA content of 0-30% on cement.  

Advantages

Sika® Plastocrete®-903 provides the following properties:
  • Extended setting times at elevated temperatures
  • Longlasting control of slump loss
  • Improved workability without increased water content
  • Reduced water without loss of workability
  • Increased strengths with less cement
  • Reduced shrinkage and creep
  • Improved surface finish
  • Chloride-free does not attack reinforcement

Packaging

200 l/drum
1,000 l/tote

Colour

Brown Liquid

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

Complies with ASTM C-494 type D & G
Product Information

Composition

Blend of refined lignosulfonate, carboxylicacid and additives

Shelf life

12 months from the date of production If stored properly in undamaged, original, sealed packaging.

Storage conditions

Store in protected area from direct sunshine at temperature between 5°C and 40°C.

Density

1.160-1.190 kg/l (at temperature 25°C)

pH-Value

6.5-8.5 Approx.

 
Technical Information

Specific Advice

Concrete shall be designed in accordance with ACI Standard Recommended Practice for Selecting Proportions of concrete (ACI 211.1-89). The water reducing/set retarding admixture shall be Sika® Plastocrete®-903, as manufactured by Sika or proved equal and shall comply with BS 5075, Part 1 or ASTM C-494 type D & G. It shall be used in strict accordance with the manufacturer's recommendations.

Application

Application Information

Dispensing

Sika® Plastocrete®-903 should be dispensed directly into the mixing water prior to its addition to the aggregates. Accurate dispensing equipment is readily available from Sika.
Consumption

Recommended Dosage

250 - 800 CC per 100 kg. of cementitious. Dosage recommend in normal condition is 400 - 600 CC per 100 kg of cementitious, or add more tolonger set of concrete in difficult condition. Actual dosage rate required is dependent on :Effect sought ; Quality of cement and aggregates ; W/C ; Temperature. In many cases it is advisable to carry out trial mixes to establish the exact rate required.
Sika® Plastocrete®-903 is compatible with all types of Portland Cement, including S.R.C. type and Hydraulic Cement

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