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Sikament® NN

Sikament NN is a highly effective dual action liquid as superplasticizer for the production of flowable concrete and as a substantial water-reducing agent for promoting high early and ultimate strength. Sikament NN complies with ASTM C494 Type F.


Sikament NN is also used as a water-reducing agent leading to high early strength concrete such as:

- Precast and pre-stressed concrete elements

- Bridges and cantilever structure

Sikament NN 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:

- Allow substantial cement reduction compared to plain concrete

Dosage: 0.60 – 2.00 ltr per 100 kg of cement


Typical dosage
: 0.80 - 1.20 ltr. per 100kg of cement


Compatibility
: Possible to combine with all Sikament, Sika Aer, Sika Pump, Sikacrete PP1, but must beadded separately to the mix and not pre-mixed prior addition.


Cement types
: All Portland cement including sulfate resistant cement.


Dispensing
: Sikament NN is either added to the gauging water prior to its addition to the dry concrete mix or added separately to wetted concrete mix, further mixing should take place for at least 1 minute per m

When added directly to the freshly mixed concrete, the plasticizing effect is more pronounced. For addition at job site, Sikament NN is added to the concrete immediately prior to discharge and after further mixing has taken place for three minutes.


Overdosing
: Significant overdosage will result in a much increased flow of the cement paste. To avoid bleeding or segregation it is recommended to wait until the slump has dropped to specified range prior to placement of concrete.

HEALTH AND SAFETY


Avoid contact with foodstuffs and utensils. Avoid prolonged skin contact. In the event of contamination wash thoroughly with water. If the eyes or mouth are affected wash with clean water and obtain medical attention immediately