Product Data Sheet Show all documents

SikaPlast® PH 8395

Retarding Superplasticiser based on PCE for Ready-Mix Concrete

SikaPlast® PH 8395 is an economical admixture based on modified polycarboxylate ether. The product has been primarily developed for applications in ready mix and site-batched concrete. SikaPlast® PH 8395 is specially designed to allow considerable reduction of mixing water while maintaining control on extend of set retardation.
SikaPlast® PH 8395 is free of chloride & low alkali. It is compatible with all types of cements.

  • Good dispersion even in mixes with high cementitious fines
  • High workability for long periods
  • Lower pumping pressure
  • Resistance to segregation even at high workability
  • Longer workability with extended setting
  • Reduced water content for a given workability
  • Higher ultimate strengths
  • Increased ease in finishing concrete
  • Water reduction up to 20-30% depending on dosage*
  • 28 days strength improved by up to 30%*
* This will depend on dosage and mix design
Product Data Sheet Show all documents

Usage

  • Ready-mixed & Site mix Concrete
  • Long-distance transporting
  • Pumped concrete
  • High workability without segregation or bleeding
  • High-performance concrete for durability
  • Congested/complex reinforced sections
  • Mixes requiring >20% water reduction
 

Advantages

  • Good dispersion even in mixes with high cementitious fines
  • High workability for long periods
  • Lower pumping pressure
  • Resistance to segregation even at high workability
  • Longer workability with extended setting
  • Reduced water content for a given workability
  • Higher ultimate strengths
  • Increased ease in finishing concrete
  • Water reduction up to 20-30% depending on dosage*
  • 28 days strength improved by up to 30%*
* This will depend on dosage and mix design

Packaging

SikaPlast® PH 8395 is supplied in 225 Kg, 1000 Kg or bulk on request.

Colour

Reddish brown liquid

Product Details

Sustainability / Certifications / Approvals

CERTIFICATES AND TEST REPORTS

Complies with ASTM C494 Types B, D & G, EN 934-2 T3.1/3.2, IS 9103 & IS 2645
Product Information

Composition

Modified Poly-Carboxylate Ether (PCE)

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 +10°C and +40°C. Protect from direct sunlight and frost.

Density

~1.08 kg/l at 25°C

pH-Value

≥ 6

Total chloride ion content

Nil

 

Application

Application Information

Compatibility

SikaPlast® PH 8395 may be combined with many other Sika® Products.
Compatible with all types of cement and cementitious materials.
Important: Always conduct trials before combining products in specific mixes and contact our Technical Service Department for information about specific combinations.

DISPENSING

SikaPlast® PH 8395 is a ready-to-use liquid which is dispensed into the concrete together with the mixing water. The plasticizing effect and water reduction are higher if the admixture is added to the damp concrete after 50 to 70% of the mixing water has been added.

 

The addition of SikaPlast® PH 8395 to dry aggregate or cement is not recommended.
Thorough mixing is essential and a minimum mixing cycle, after the addition of the SikaPlast® PH 8395, of 60 seconds for forced action mixers is recommended.
Consumption

Recommended dosage

Optimum dosage of SikaPlast® PH 8395 should be determined with trial mixes. As a guide, a dosage range of 400ml to 2000ml per 100kg of cementitious material is normally recommended. Because of variations in concrete materials, job site conditions, and/or applications, dosages outside of the recommended range may be required. In such cases, contact your local Sika representative.

 
Effects of over dosage

A severe over-dosage of SikaPlast® PH 8395 can result in the following: 

  • Reduced permeability
  • Long extension of initial and final set
  • Increase in air entrainment
  • Bleed/segregation of mix, quick loss of workability
  • Increased plastic shrinkage 

A slight overdosing may not adversely affect the ultimate strength of the concrete and can achieve higher strengths than normal concrete, provided it is properly compacted and cured. Due allowance should be made for the effect of fluid concrete pressure on form work, and stripping times should be monitored.
In the event of over dosage consult your local Sika representative immediately.
Application steps

CLEANING OF EQUIPMENT

Clean all tools and application equipment with water immediately after use. Hardened / cured material can only be mechanically removed.

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