Bemix Köldbruk

Information

Bemix Köldbruk is a ready-mixed, expanding cold-weather concrete for casting in sub-zero temperatures or when rapid formwork removal is required. Applications: underpouring for pillars or prefab elements or when there is a requirement fro rapid removal of formwork. Note! Cures in sub-zero temperature.

Product data

Article Number:

1100040

Weight

25 kg

Product category

Expanding mortar

Function

Casting in sub-zero temperatures

Processable minutes

10

Compression strength

40

Layer thickness in mm

20-150

Consumption kg/m2/mm

2

Water quantity litres/25 kg

3,75

1 kg dry mortar = finished concrete in litres

0,5

Waterproof

 

Instructions

Preparation:
Clean the substrate thoroughly for good adhesion.

Mixing:
Bemix Köldbruk is ready mixed. Only water is added for casting. A rapid mixer or flat mixer can be used, or a mixer attachment, paint mixer or similar. Small batches and rapid mixing are recommended.

Casting:
For casting the mix should have a temperature of 20 °C. This is to prevent the mix from hardening too quickly. For example, if the dry cement has a temperature of –10°C the water added should have a temperature of 40 °C. To keep the mix workable for longer, hot water should be used whatever the ambient temperature. The mix will cure without heating even at temperatures down to –10°C. The mixture must be used within 20 minutes after mixing. The mix is poured in from one side. Avoid trapping air pockets. Mix and pour at an even pace.

After treatment:
After treatment should not be done if applying in cold conditions. As soon as the surface has hardened enough to stand watering it should be watered for a long period or, best of all, covered with water saturated industrial felt or jute fabric.

Winter application:
Bemix Köldbruk hardens and cures without heating even if the temperature of the mix itself drops below 0 °C.