Product Data Sheet Show all documents

SikaPaver®-521 AE

New generation polycarboxylate ether-based plasticizer for Manufactured Concrete Products, specially engineered for block and paver mixes

SikaPaver®-521 AE is an innovative multi-purpose plasticizer based polycarboxylic ether polymers specially developed for semi-dry concrete mixes. The product is suitable for the production of hollow-core slabs, masonry and paving blocks.
At the same time, SikaPaver®-521 AE accelerates the strength development and reduces the cycle time whilst the appearance is maintained or even improved.
Due to its unique principle of action on the cement grain, SikaPaver®-521 AE fully exploits the hydration potential of cement resulting in higher early strengths and shorter curing times.
Suitable for use in hot and tropical climatic conditions.  

SikaPaver®-521 AE offers the following benefits for the MCP industry to:
  • Optimised mix design
  • Enhanced productivity due to shorter cycle time
  • Higher early strength
  • Optimised curing cycles due to shorter curing times
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Product Data Sheet Show all documents

Usage

SikaPaver®-521 AE is suitable for Manufacturing Concrete Products, especially:
  • Concrete Pavers
  • Masonry Blocks
  • Roof tiles
  • Kerbstones
  • Landscaping elements

Advantages

SikaPaver®-521 AE offers the following benefits for the MCP industry to:
  • Optimised mix design
  • Enhanced productivity due to shorter cycle time
  • Higher early strength
  • Optimised curing cycles due to shorter curing times

Packaging

1000 L flowbin or bulk supply in tanker

Colour

Clear to light brown liquid

Product Details

Product Information

Composition

New generation of polycarboxylic ether-based plasticizer

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 +50 °C. Mix well before use.

Density

~1.02 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 SikaPaver®-521 AE in concrete. Refer to relevant standards.

Application

Application Information

Compatibility

SikaPaver®-521 AE may be combined with all types of Portland cement, concretes containing pozzolanic materials such as; GGBS, PFA , micro-silica
and the following Sika products:
▪ SikaFiber®
▪ Sika® Stabilizer
▪ SikaControl®
We recommend to perform trial mixes to establish the required performance when combined with the above products. Please consult our Sika
Technical Department.

Dispensing

SikaPaver®-521 AE is a liquid ready-to-use admixture to be added to the concrete during the mixing process. The best results are obtained when the admixture is added after all the other components are already in the mixer and after the addition of at least 80 % of the total water.
The water content is adjusted to obtain the desired consistence or workability.
Consumption

Recommended dosage

0.4—1.2 % by weight of binder.
Dosages outside of this range 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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