Positive surface concrete deactivator

Concrete deactivator - Naturcem

Naturcem® is a water-based positive concrete surface deactivator. Its main function is to slow down and delay the setting of concrete in a controlled manner.

Ready-to-use and fully biodegradable, it delays the hydration of cement on the surface exposed to concrete. This concrete deactivator contributes to reducing the ecological footprint, as it is solvent-free.

A product that is particularly suitable for decorative paving from the controlled deactivation of concrete curing. It is not necessary to protect any surrounding areas beforehand, except for painted facades and porous surfaces.

Depending on the colour, the degree of attack and the size of the aggregate, there are three types of concrete deactivators: Naturcem® Low, Naturcem® Medium and Naturcem® High.

Download here the Naturcem® technical data sheet.

Technical characteristics Naturcem concrete deactivator

3 - 5

Solids

23 ± 5%

Density

1,03 ± 0,01g/cm3

Viscosity

24 ± 2s (Ford Cup 4 mm)

Consumption

The consumption of Naturcem concrete surface deactivator f is 5-6 m2 /L.

Packaging

Naturcem® concrete deactivator is packaged in 5 and 25 litre containers.

Main uses of Naturcem® positive concrete deactivator

The main fields of application of Naturcem® positive surface deactivator are:

The main fields of application of Naturcem® positive surface deactivator are: street furniture, aggregate surfacing, aggregate road barriers and slabs.

How to apply concrete deactivator: step by step and tips

1. Before using Naturcem® concrete deactivator, the concrete must be levelled and smoothed to make the surface homogeneous. If necessary, a light vibration can be carried out for a short period of time.

2. The type of cement as well as the dosage are two factors that affect the setting time of the concrete. If a high cement dosage is used in the concrete formulation, the depth of our concrete deactivator will be reduced.

3. We recommend using monofilament synthetic fibres to increase the cohesion of the concrete to be deactivated with Naturcem®. These fibres facilitate the subsequent application of our product.

4. We recommend carrying out small tests before applying the stamped concrete deactivator on the entire surface. Spray Naturcem® on the surfaces close to the fresh concrete to ensure that the positive surface retardant does not contaminate the surrounding elements.

5. Wait for the bleeding water to disappear. Approximately 30 minutes after application of the concrete.

6. Stir the Naturcem® concrete deactivator so that the product is homogeneous. Then spray evenly with a 0.79 mm diameter nozzle at 2/4 bar.

7. Wash the concrete with pressurised water (between 100 and 150 bar). The nozzle should be held at a distance of 20-40 cm from the surface. The spray should form an angle of about 45° to the deactivated concrete.

8. After applying the concrete deactivator, the surface must be cleaned. This cleaning should take place between 3 and 24 hours after the application of Naturcem®. If, on the other hand, the product is exposed to strong wind and sun or the temperature is below 35ºC, it must be cleaned between 4 and 12 hours after application. Above 35ºC, the cleaning time is between 3 and 8 hours after the use of Naturcem® concrete deactivator.

Special precautions for Naturcem® concrete deactivator

It is a non-flammable concrete deactivator.

If the product comes into contact with the skin, wash immediately with plenty of water and soap.

Do not use solvents or thinners and ensure good ventilation of the room.

For the application of Naturcem® Floor deactivator it is recommended to use a mask with chemical absorbent as well as protective goggles and rubber gloves. To prevent the material from drying out or thickening, it is necessary to close the lid quickly after each use.