Your advantages of concrete heating
- Solidification and moisture development is delayed. This results in longer stripping times and a longer curing period. The young concrete must therefore be protected for longer.
- Structural damage due to freezing through too early: If young concrete freezes before freeze-through resistance is reached, the concrete structure may be disturbed and permanently damaged due to the increase in volume of the freezing water contained in the concrete.
- Reduction of the adhesive bond between concrete and reinforcement or top and bottom concrete due to ice and snow accumulation on formwork or reinforcement.
- Risk of frost damage when concreting against frozen ground, formwork or structural elements, if due to their low temperature the concrete freezes through before reaching its freeze resistance.
- Risk of crackingThis is the case when high residual stresses occur due to higher temperature differences in the component between the edge and core zone after stripping or removing heat-insulating covers. In addition, cold, dry air - also in combination with wind - can lead to increased drying of the concrete in winter and thus to increased cracking.