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

USES
Sikament® NN GB is used as a superplasticizer in the production of flowable concrete such as in:

- Slabs and foundations

- Walls, columns and piers

- Slender components with densely packed reinforcements

Sikament® NN GB 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

- Can be used for gypsum board production

Sikament® NN GB 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 be added separately to the mix and not pre-mixed prior addition.

Cement types: All Portland cement including sulfate resistant cement.

Dispensing: Sikament® NN GB 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 GB 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.