Product Data Sheet Show all documents

Sikament® NN Powder

Water-Reducing Concrete Admixture

A highly effective superplasticizer for the production of free flowing concrete or as a substantial water-reducing agent for promoting high early and ultimate stregnth.

  • Complies with ASTM C-494 Type F

Sikament® NN Powder provides the following properties: As a superplasticizer:
  • Workability is greatly improved
  • Increased placeability in slender components with packed reinforcements
  • Decreases the amount of vibration
  • Normal set without retardation
  • Significantly reduces the risk of segregation
As a water reducer:
  • Up to 25% water reduction
  • 28-day strength improved by up to 40%
Product Data Sheet Show all documents

Usage

Sikament® NN Powder as a superplasticizer in the production of free-flowing concrete such as:
  • Slabs and foundations
  • Walls, columns, and piers
  • Slender components with densely packed reinforcements
  • Textured surface finishes
It is also used as a water-reducing agent leading to high early strength of concrete such as:
  • Precast concrete elements
  • Hollow blocks and pavements
  • Pre stressed concrete
  • Bridges and cantilever structures
  • Areas of concrete where formwork must be removed quickly or earlyloading applied
 

Advantages

Sikament® NN Powder provides the following properties: As a superplasticizer:
  • Workability is greatly improved
  • Increased placeability in slender components with packed reinforcements
  • Decreases the amount of vibration
  • Normal set without retardation
  • Significantly reduces the risk of segregation
As a water reducer:
  • Up to 25% water reduction
  • 28-day strength improved by up to 40%

Packaging

150 g/pack

Colour

Brown powder

Product Details

Product Information

Chemical Base

Naphthalene Formaldehyde Sulphonate

Shelf Life

1 year when unopened

Storage Conditions

Store out of direct sunlight, and dry condition.
Technical Information

Concrete Mix Design

Mix               

Dosage and when added               

Slump                                  

w/c                         

1

Without Sikament® NN Powder

6 in.

0.61

2

1 pack (150g) with gauging water

6 in.

0.43

Compressive Strength (psi)

MIx

1 day

7 days

28 days

1

930 psi

1,854 psi

2,504 psi

2

1,306 psi

2,799 psi

3,881 psi

Application

Application Information

Dispensing

Sikament® NN Powder can added to the mixing water prior to its addition to the aggregates or as in most cases, it can be added directly to the freshly mixed concrete. When added directly to the freshly mixed concrete, the plasticizing effect is more pronounced. For ready-mix concrete, Sikament® NN Powder is added to the concrete immediately prior to discharge and after further mixing has taken place for three minutes.
Consumption

Recommended Dosage

1 pack (150 g) by 40 kg bag of cement. Exact dosage rates are dependent on the type of effect sought, quality of cement and aggregates, water/cement ratio and ambient temperature. It is advisable to carry out trial mixes.
Application steps

APPLICATION INSTRUCTIONS

Significant overdose will result in increased workability and setting time of the concrete. Under dosage will result in reduced workability (more difficult placing) and shorter setting times (reduced workable life). However, provided the concrete is cured effectively, ultimate strength and properties will not be affected.

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