Product Data Sheet Show all documents

SikaPlast®-950

MID-RANGE WATER REDUCING AND RETARDING CONCRETE ADMIXTURE

SikaPlast®-950 is a polycarboxylate based superplasticizer developed particularly for use in ready mixed concrete to give extended slump retention and high strength development of normal grade concrete mixes.
SikaPlast®-950 is suitable for use in concrete mixes incorporating pozzolanic materials such as GGBS, PFA and microsilica.
Suitable for use in hot and tropical climatic conditions.

SikaPlast®-950 acts by surface absorption on the cement particles producing steric hindrance as well as electrostatic repulsion between the binder particles which results in higher dispersion, flow and retention. SikaPlast®-950 provides the following beneficial properties:
  • Substantial improvement in workability without increased water
  • Low risk of segregation
  • Normal set without retardation (within the dosage limit)
  • Improved density and surface finish
  • Improved water tightness
  • Excellent solution for continuous concrete casting of deep elements
  • Does not contain chlorides or other steel corrosion promoting ingredients therefore may be used for reinforced and pre-stressed concrete construction
  • Can be combined with retarding admixtures to maintain slump
Product Data Sheet Show all documents

Usage

  • High flow concrete
  • Concrete with high water reduction
  • High strength concrete
  • Slabs
  • Foundations
  • Walls
  • Columns and piers
  • Piles
  • Pre-stressed concrete,
  • Bridges and cantilever structures
 

Advantages

SikaPlast®-950 acts by surface absorption on the cement particles producing steric hindrance as well as electrostatic repulsion between the binder particles which results in higher dispersion, flow and retention. SikaPlast®-950 provides the following beneficial properties:
  • Substantial improvement in workability without increased water
  • Low risk of segregation
  • Normal set without retardation (within the dosage limit)
  • Improved density and surface finish
  • Improved water tightness
  • Excellent solution for continuous concrete casting of deep elements
  • Does not contain chlorides or other steel corrosion promoting ingredients therefore may be used for reinforced and pre-stressed concrete construction
  • Can be combined with retarding admixtures to maintain slump

Packaging

1000 L flowbin. Bulk supply in tanker trucks possible on request

Colour

Brown liquid

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

SikaPlast®-950 follows the requirements of ASTM C494; Type G and EN 934-2
Product Information

Composition

Aqueous solution of modified polycarboxylates, co-polymers

Shelf life

12 months from date of production if stored properly

Storage conditions

Store in undamaged, unopened, original sealed packaging in dry conditions at temperatures between +5 °C and +45 °C. Protect from direct sunlight and frost.

Density

~1.05 kg/l (+25 °C)

Total Chloride Ion Content

Nil

(EN 934-2)
Technical Information

Concreting Guidance

The standard rules of good concreting practice for production and placing must be observed when using SikaPlast®-950 in concrete. Refer to relevant standards.
Fresh concrete must be cured properly especially at high temperatures in order to prevent plastic and drying shrinkage. Use Sika® Antisol® products as a curing agent or apply wet hessian.

Application

Application Information

Compatibility

SikaPlast®-950 may be combined with all types of Portland cement (OPC and SRC), concretes containing pozzolanic materials such as; GGBS, PFA, micro-silica and the following Sika products:
SikaPump®, Sika® FerroGard®-901, SikaFume®, SikaFiber®, Sika Aer®, Sika® Stabilizer, Sika®-1 WT, Sika® WT-10
We recommend to perform trial mixes to establish the required performance when combining SikaPlast®-950 with the above products or other admixtures. Please consult our Sika Technical Department.

Dispensing

SikaPlast®-950 is added to the gauging water or simultaneously poured with it into the concrete mixer at the batching plant.
Do not add SikaPlast®-950 directly to the dry mix.
For optimum utilization of its high water reduction property we recommend thorough mixing at a minimal wet mixing time of 60 seconds.The addition of the remaining gauging water (to fine tune concrete consistency) may only be started after two-thirds of the wet mixing time to avoid surplus water in the concrete.
Consumption

Recommended Dosage

0.6 - 2.0 %* by weight of binder.
Higher dosages up to 2.5 % by weight of binder can be used depending on the mix design, raw materials, climatic conditions and concrete requirements.
Trial mixes must be performed to establish the exact dosage rate required.

* Note: Set retardation may occur at dosages greater than 1.0 % with some binders.

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