Dampen the dry or porous surface to be repaired. Remove excess water.
Maximum water volume 3.0 to 3.3 liters per 25 kg. The concrete is malleable with a small amount and suitable for casting with a normal amount of water. Use warm mixing water in conditions below 10 °C and hot mixing water in freezing conditions. Always put some of the water in the mixing container first. Add the dry concrete and the rest of the water. Mix thoroughly, for two minutes at most.
The working time is only four to five minutes.