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Sikament®-520 BA

High Range Water Reducing and Retarding Concrete Admixture

Sikament®-520 BA (formerly named Sikament®-520 BA*) is a highly effective dual action liquid superplasticiser that imparts excellent slump retention for prolonged periods.
Suitable for use in hot and tropical climatic conditions.

Sikament®-520 BA provides the following properties:
    As a Superplasticiser:
  • Workability is greatly improved
  • Concrete is placed easily
  • Especially suitable for slender components with densely packed reinforcement
  • Concrete requires less vibrating
  • Improved cohesion of the concrete mix significantly reduces the risk of segregation and allows greater time for placement
   As a Water Reducer:
  • Impressive water reduction capability
  • Final strength improvement
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Usage

Sikament®-520 BA can be used as a superplasticizer for the production of free flowing concrete for:
  • Slabs
  • Foundations
  • Walls
  • Columns
  • Piers
  • Slender components with dense reinforcement
  • Piles
    It is also used as a water-reducing agent leading to high early strength concrete for:
  • Pre-cast concrete elements
  • Pre-stressed concrete
  • Bridges and cantilever structures
 

Advantages

Sikament®-520 BA provides the following properties:
    As a Superplasticiser:
  • Workability is greatly improved
  • Concrete is placed easily
  • Especially suitable for slender components with densely packed reinforcement
  • Concrete requires less vibrating
  • Improved cohesion of the concrete mix significantly reduces the risk of segregation and allows greater time for placement
   As a Water Reducer:
  • Impressive water reduction capability
  • Final strength improvement

Packaging

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

Colour

Brown liquid

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

Sikament®-520 BA follows the requirements of ASTM C494; Type G and EN 934-2
Product Information

Composition

Sulphonated naphthalene

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

~1.20 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 Sikament®-520 BA 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

Sikament®-520 BA 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 Sikament®-520 BA with the above products or other admixtures. Please consult our Sika Technical Department.

Dispensing

Sikament®-520 BA is added to the gauging water or simultaneously poured with it into the concrete mixer at the batching plant.
Do not add Sikament®-520 BA 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

0.8 - 2.5 % by weight of binder.
Higher dosages 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.

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