Product Data Sheet Safety Data Sheet Show all documents

Sikament® NN

High Range Liquid Water Reducer / Superplasticiser Admixture For Concrete

Sikament® NN is a highly effective dual action liquid superplasticiser for the production of high slump concrete or as a substantial water reducing agent.

Sikament® NN provides the following properties: As a Superplasticizer:
  • Workability is greatly improved
  • Increased place ability in slender components with packed reinforcement
  • Decreases the amount of vibration
  • Normal set without retardation
  • Significantly reduces the risk of segregation
As a water reducer:
  • Up to 25% water reduction
  • 16-hour compressive strengths increased by up to 100%
  • 28-day strength improved by up to 40%
Product Data Sheet Safety Data Sheet Show all documents

Usage

  • Slabs and foundations
  • Walls, columns and piers
  • Slender components with densely packed reinforcements
  • Sprayed concrete
  • Textured surface finishes
  • Pre-cast and pre-stressed concrete elements
  • Bridges and cantilever structures
 

Advantages

Sikament® NN provides the following properties: As a Superplasticizer:
  • Workability is greatly improved
  • Increased place ability in slender components with packed reinforcement
  • Decreases the amount of vibration
  • Normal set without retardation
  • Significantly reduces the risk of segregation
As a water reducer:
  • Up to 25% water reduction
  • 16-hour compressive strengths increased by up to 100%
  • 28-day strength improved by up to 40%

Packaging

5 L/container               210 L/drum

10 L/container

Colour

Dark brown liquid

Product Details

Product Information

Chemical Base

Naphthalene Formaldehyde Sulfonate

Shelf Life

1 year when unopened

Storage Conditions

The product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +10 °C and +45 °C. Always refer to packaging.

Specific Gravity

1.19 ± 0.01 kg/L
Technical Information

Concreting Guidance

The standard rules of good concreting practice, concerning production and placing must be followed.
Laboratory trials must be carried out before concreting on site, especially when using a new mix design or producing new concrete components.
Fresh concrete must be cured properly and curing applied as early as possible.

Concrete Mix Design

When using Sikament® NN, a suitable mix design must be calculated. The local material sources used within the mix design must always be trialled and approved for suitability before commencement of the project.

Application

Application Information

Compatibility

Sikament® NN may be combined with many other Sika products. Trials must always be carried out before combining products in specific
mixes. Contact Sika Technical Services for additional information and any specific combinations.

Dispensing

Sikament® NN must be measured using suitable equipment then added to the batching gauging water or both added together at the same time into the  batching plant concrete mixer.
To achieve the optimum performance, a wet mixing time at the batching plant of at least 60 seconds is recommended (dependant on mixing conditions and mixer performance).
To avoid excess water in the concrete, the final dosage must begin after 2/3 of the wet mixing time.

Restrictions

Sikament® NN must not be added to dry cement.
Consumption

Recommended Dosage

Mix

Dosage and when added

Slump (cm)

1

Without Sikament® NN

5

2

1% Sikament® NN with gauging water

12

31% Sikament® NN immediately after making original concrete and further mixing for 1 min.15
41% Sikament® NN, 0.5 hr. after making up concrete or further mixing for 1 min.16

Concrete consistency measured in terms of slump to DN1048 - with Sikament® NN added at different times.

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